Astronomy & Astrophysics (A&A)

Open Access

Solar coronal heating from small-scale magnetic braids

L. P. Chitta, H. Peter, S. Parenti, D. Berghmans, F. Auchère, S. K. Solanki, R. Aznar Cuadrado, U. Schühle, L. Teriaca, S. Mandal et al. (12 more)

Published online: 25 November 2022

DOI: https://doi.org/10.1051/0004-6361/202244170

Open Access

Connecting Solar Orbiter remote-sensing observations and Parker Solar Probe in situ measurements with a numerical MHD reconstruction of the Parker spiral

Ruggero Biondo, Alessandro Bemporad, Paolo Pagano, Daniele Telloni, Fabio Reale, Marco Romoli, Vincenzo Andretta, Ester Antonucci, Vania Da Deppo, Yara De Leo et al. (14 more)

Published online: 14 December 2022

DOI: https://doi.org/10.1051/0004-6361/202244535

Open Access

Evolution of coronal hole solar wind in the inner heliosphere: Combined observations by Solar Orbiter and Parker Solar Probe

D. Perrone, S. Perri, R. Bruno, D. Stansby, R. D’Amicis, V. K. Jagarlamudi, R. Laker, S. Toledo-Redondo, J. E. Stawarz, D. Telloni et al. (11 more)

Published online: 20 December 2022

DOI: https://doi.org/10.1051/0004-6361/202243989

Open Access

The 18–19 March 2022 series of ³He-rich events observed by Solar Orbiter at 0.36 au compared with EUV, X-ray, and radio observations

G. M. Mason, N. V. Nitta, R. Bučík, R. Gómez-Herrero, V. Krupar, S. Krucker, G. C. Ho, R. C. Allen, A. Kouloumvakos, R. F. Wimmer-Schweingruber et al. (3 more)

Published online: 18 January 2023

DOI: https://doi.org/10.1051/0004-6361/202245576

Open Access

The first gradual solar energetic particle event with an enhanced ³He abundance on Solar Orbiter

R. Bučík, G. M. Mason, R. Gómez-Herrero, V. Krupar, D. Lario, M. J. Starkey, G. C. Ho, J. Rodríguez-Pacheco, R. F. Wimmer-Schweingruber, F. Espinosa Lara et al. (9 more)

Published online: 21 December 2022

DOI: https://doi.org/10.1051/0004-6361/202245037

Open Access

Tracking magnetic flux and helicity from the Sun to Earth - Multi-spacecraft analysis of a magnetic cloud and its solar source

J. K. Thalmann, M. Dumbović, K. Dissauer, T. Podladchikova, G. Chikunova, M. Temmer, E. Dickson and A. M. Veronig

Published online: 11 January 2023

DOI: https://doi.org/10.1051/0004-6361/202244248

Open Access

Signatures of dynamic fibrils at the coronal base: Observations from Solar Orbiter/EUI

Sudip Mandal, Hardi Peter, Lakshmi Pradeep Chitta, Regina Aznar Cuadrado, Udo Schühle, Luca Teriaca, Sami K. Solanki, Louise Harra, David Berghmans, Frédéric Auchère et al. (13 more)

Published online: 27 January 2023

DOI: https://doi.org/10.1051/0004-6361/202245431

Open Access

First polar observations of the fast solar wind with the Metis – Solar Orbiter coronagraph: Role of 2D turbulence energy dissipation in the wind acceleration

D. Telloni, E. Antonucci, L. Adhikari, G. P. Zank, S. Giordano, M. Vai, L.-L. Zhao, V. Andretta, A. Burtovoi, G. E. Capuano et al. (26 more)

Published online: 14 February 2023

DOI: https://doi.org/10.1051/0004-6361/202245759

Open Access

Solar energetic electron events measured by MESSENGER and Solar Orbiter - Peak intensity and energy spectrum radial dependences: Statistical analysis

L. Rodríguez-García, R. Gómez-Herrero, N. Dresing, D. Lario, I. Zouganelis, L. A. Balmaceda, A. Kouloumvakos, A. Fedeli, F. Espinosa Lara, I. Cernuda et al. (3 more)

Published online: 02 February 2023

DOI: https://doi.org/10.1051/0004-6361/202244553

Open Access

Identifying the energy release site in a solar microflare with a jet

Andrea Francesco Battaglia, Wen Wang, Jonas Saqri, Tatiana Podladchikova, Astrid M. Veronig, Hannah Collier, Ewan C. M. Dickson, Olena Podladchikova, Christian Monstein, Alexander Warmuth et al. (3 more)

Published online: 02 February 2023

DOI: https://doi.org/10.1051/0004-6361/202244996

Open Access

Image enhancement with wavelet-optimized whitening

F. Auchère, E. Soubrié, G. Pelouze and É. Buchlin

Published online: 06 February 2023

DOI: https://doi.org/10.1051/0004-6361/202245345

Open Access

Modeling Solar Orbiter dust detection rates in the inner heliosphere as a Poisson process

S. Kočiščák, A. Kvammen, I. Mann, S. H. Sørbye, A. Theodorsen and A. Zaslavsky

Published online: 20 February 2023

DOI: https://doi.org/10.1051/0004-6361/202245165

Open Access

Temperature of quiet Sun small scale brightenings observed by EUI on board Solar Orbiter: Evidence for a cooler component

A. Dolliou, S. Parenti, F. Auchère, K. Bocchialini, G. Pelouze, P. Antolin, D. Berghmans, L. Harra, D. M. Long, U. Schühle et al. (9 more)

Published online: 06 March 2023

DOI: https://doi.org/10.1051/0004-6361/202244914

Open Access

Characterising fast-time variations in the hard X-ray time profiles of solar flares using Solar Orbiter’s STIX

Hannah Collier, Laura A. Hayes, Andrea F. Battaglia, Louise K. Harra and Säm Krucker

Published online: 08 March 2023

DOI: https://doi.org/10.1051/0004-6361/202245293

Open Access

The effect of variations in the magnetic field direction from turbulence on kinetic-scale instabilities

Simon Opie, Daniel Verscharen, Christopher H. K. Chen, Christopher J. Owen and Philip A. Isenberg

Published online: 31 March 2023

DOI: https://doi.org/10.1051/0004-6361/202345965

Open Access

In-flight validation of the Metis visible-light polarimeter coronagraph on board Solar Orbiter

A. Liberatore, S. Fineschi, M. Casti, G. Capobianco, L. Abbo, V. Andretta, V. Da Deppo, M. Fabi, F. Frassati, G. Jerse et al. (14 more)

Published online: 23 March 2023

DOI: https://doi.org/10.1051/0004-6361/202244069

Open Access

Multi-point study of the energy release and impulsive CME dynamics in an eruptive C7 flare

Jonas Saqri, Astrid M. Veronig, Ewan C. M. Dickson, Tatiana Podladchikova, Alexander Warmuth, Hualin Xiao, Dale E. Gary, Andrea Francesco Battaglia and Säm Krucker

Published online: 23 March 2023

DOI: https://doi.org/10.1051/0004-6361/202245079

Open Access

Recurrent ³He-rich solar energetic particle injections observed by Solar Orbiter at ∼0.5 au

R. Bučík, G. M. Mason, N. V. Nitta, V. Krupar, L. Rodriguez, G. C. Ho, S. T. Hart, M. A. Dayeh, J. Rodríguez-Pacheco, R. Gómez-Herrero and R. F. Wimmer-Schweingruber

Published online: 05 May 2023

DOI: https://doi.org/10.1051/0004-6361/202345875

Open Access

Quiet-time suprathermal ions in the inner heliosphere during the rising phase of solar cycle 25

G. M. Mason, G. C. Ho, R. C. Allen, A. Kouloumvakos, R. F. Wimmer-Schweingruber and J. Rodriguez-Pacheco

Published online: 18 May 2023

DOI: https://doi.org/10.1051/0004-6361/202345978

Open Access

Magnetic fields inferred by Solar Orbiter: A comparison between SO/PHI-HRT and SDO/HMI

J. Sinjan, D. Calchetti, J. Hirzberger, F. Kahil, G. Valori, S. K. Solanki, K. Albert, N. Albelo Jorge, A. Alvarez-Herrero, T. Appourchaux et al. (24 more)

Published online: 27 April 2023

DOI: https://doi.org/10.1051/0004-6361/202245830

Open Access

Acceleration of suprathermal protons near an interplanetary shock

L. Yang, V. Heidrich-Meisner, L. Berger, R. F. Wimmer-Schweingruber, L. Wang, J. He, X. Zhu, D. Duan, A. Kollhoff, D. Pacheco et al. (5 more)

Published online: 10 May 2023

DOI: https://doi.org/10.1051/0004-6361/202245681

Open Access

Slow solar wind sources - High-resolution observations with a quadrature view

Krzysztof Barczynski, Louise Harra, Conrad Schwanitz, Nils Janitzek, David Berghmans, Frédéric Auchère, Regina Aznar Cuadrado, Éric Buchlin, Emil Kraaikamp, David M. Long et al. (9 more)

Published online: 10 May 2023

DOI: https://doi.org/10.1051/0004-6361/202345983

Open Access

Imaging and spectroscopic observations of extreme-ultraviolet brightenings using EUI and SPICE on board Solar Orbiter

Ziwen Huang, L. Teriaca, R. Aznar Cuadrado, L. P. Chitta, S. Mandal, H. Peter, U. Schühle, S. K. Solanki, F. Auchère, D. Berghmans et al. (9 more)

Published online: 10 May 2023

DOI: https://doi.org/10.1051/0004-6361/202345988

Open Access

Evidence of external reconnection between an erupting mini-filament and ambient loops observed by Solar Orbiter/EUI

Z. F. Li, X. Cheng, M. D. Ding, L. P. Chitta, H. Peter, D. Berghmans, P. J. Smith, F. Auchère, S. Parenti, K. Barczynski et al. (9 more)

Published online: 10 May 2023

DOI: https://doi.org/10.1051/0004-6361/202245814

Open Access

The ratio of horizontal to vertical displacement in solar oscillations estimated from combined SO/PHI and SDO/HMI observations

J. Schou, J. Hirzberger, D. Orozco Suárez, K. Albert, N. Albelo Jorge, T. Appourchaux, A. Alvarez-Herrero, J. Blanco Rodríguez, A. Gandorfer, D. Germerott et al. (37 more)

Published online: 10 May 2023

DOI: https://doi.org/10.1051/0004-6361/202345946

Open Access

The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter

Hualin Xiao, Shane Maloney, Säm Krucker, Ewan Dickson, Paolo Massa, Erica Lastufka, Andrea Francesco Battaglia, László Etesi, Nicky Hochmuth, Frédéric Schuller et al. (5 more)

Published online: 18 May 2023

DOI: https://doi.org/10.1051/0004-6361/202346031

Open Access

Clustering of magnetic reconnection exhausts in the solar wind: An automated detection study

Naïs Fargette, Benoît Lavraud, Alexis P. Rouillard, Pierre S. Houdayer, Tai D. Phan, Marit Øieroset, Jonathan P. Eastwood, Georgios Nicolaou, Andrei Fedorov, Philippe Louarn et al. (2 more)

Published online: 08 June 2023

DOI: https://doi.org/10.1051/0004-6361/202346043

Open Access

The 17 April 2021 widespread solar energetic particle event

N. Dresing, L. Rodríguez-García, I. C. Jebaraj, A. Warmuth, S. Wallace, L. Balmaceda, T. Podladchikova, R. D. Strauss, A. Kouloumvakos, C. Palmroos et al. (39 more)

Published online: 09 June 2023

DOI: https://doi.org/10.1051/0004-6361/202345938

Open Access

Spectropolarimetric investigation of magnetohydrodynamic wave modes in the photosphere: First results from PHI on board Solar Orbiter

D. Calchetti, M. Stangalini, S. Jafarzadeh, G. Valori, K. Albert, N. Albelo Jorge, A. Alvarez-Herrero, T. Appourchaux, M. Balaguer Jiménez, L. R. Bellot Rubio et al. (24 more)

Published online: 09 June 2023

DOI: https://doi.org/10.1051/0004-6361/202245826

Open Access

Beyond the disk: EUV coronagraphic observations of the Extreme Ultraviolet Imager on board Solar Orbiter

F. Auchère, D. Berghmans, C. Dumesnil, J.-P. Halain, R. Mercier, P. Rochus, F. Delmotte, S. François, A. Hermans, V. Hervier et al. (31 more)

Published online: 13 June 2023

DOI: https://doi.org/10.1051/0004-6361/202346039

Open Access

Direct assessment of SDO/HMI helioseismology of active regions on the Sun’s far side using SO/PHI magnetograms

D. Yang, L. Gizon, H. Barucq, J. Hirzberger, D. Orozco Suárez, K. Albert, N. Albelo Jorge, T. Appourchaux, A. Alvarez-Herrero, J. Blanco Rodríguez et al. (40 more)

Published online: 19 June 2023

DOI: https://doi.org/10.1051/0004-6361/202346030

Open Access

Small-scale EUV features as the drivers of coronal upflows in the quiet Sun

Conrad Schwanitz, Louise Harra, Cristina H. Mandrini, Alphonse C. Sterling, Nour E. Raouafi, Cecilia Mac Cormack, David Berghmans, Frédéric Auchère, Krzysztof Barczynski, Regina Aznar Cuadrado et al. (11 more)

Published online: 27 June 2023

DOI: https://doi.org/10.1051/0004-6361/202346036

Open Access

Langmuir waves associated with magnetic holes in the solar wind

J. J. Boldú, D. B. Graham, M. Morooka, M. André, Yu. V. Khotyaintsev, T. Karlsson, J. Souček, D. Píša and M. Maksimovic

Published online: 27 June 2023

DOI: https://doi.org/10.1051/0004-6361/202346100

Open Access

The source of unusual coronal upflows with photospheric abundance in a solar active region

L. K. Harra, C. H. Mandrini, D. H. Brooks, K. Barczynski, C. Mac Cormack, G. Cristiani, S. Mandal, A. C. Sterling, V. Martinez Pillet, N. Janitzek et al. (14 more)

Published online: 29 June 2023

DOI: https://doi.org/10.1051/0004-6361/202245747

Open Access

Multiple injections of energetic electrons associated with the flare and CME event on 9 October 2021

Immanuel C. Jebaraj, A. Kouloumvakos, N. Dresing, A. Warmuth, N. Wijsen, C. Palmroos, J. Gieseler, A. Marmyleva, R. Vainio, V. Krupar et al. (5 more)

Published online: 30 June 2023

DOI: https://doi.org/10.1051/0004-6361/202245716

Open Access

Wavefront error of PHI/HRT on Solar Orbiter at various heliocentric distances

F. Kahil, A. Gandorfer, J. Hirzberger, D. Calchetti, J. Sinjan, G. Valori, S. K. Solanki, M. Van Noort, K. Albert, N. Albelo Jorge et al. (24 more)

Published online: 30 June 2023

DOI: https://doi.org/10.1051/0004-6361/202346033

Open Access

First perihelion of EUI on the Solar Orbiter mission

D. Berghmans, P. Antolin, F. Auchère, R. Aznar Cuadrado, K. Barczynski, L. P. Chitta, S. Gissot, L. Harra, Z. Huang, M. Janvier et al. (28 more)

Published online: 07 July 2023

DOI: https://doi.org/10.1051/0004-6361/202245586

Open Access

Magnetic reconnection as an erosion mechanism for magnetic switchbacks

G. H. H. Suen, C. J. Owen, D. Verscharen, T. S. Horbury, P. Louarn and R. De Marco

Published online: 12 July 2023

DOI: https://doi.org/10.1051/0004-6361/202345922

Open Access

Multi-spacecraft observations of near-relativistic electron events at different radial distances

A. Kollhoff, L. Berger, M. Brüdern, N. Dresing, S. Eldrum, S. Fleth, R. Gómez-Herrero, B. Heber, P. Kühl, D. Pacheco et al. (4 more)

Published online: 14 July 2023

DOI: https://doi.org/10.1051/0004-6361/202345955

Open Access

Recurrent solar density transients in the slow wind observed with the Metis coronagraph

R. Ventura, E. Antonucci, C. Downs, P. Romano, R. Susino, D. Spadaro, D. Telloni, S. L. Guglielmino, G. Capuano, V. Andretta et al. (15 more)

Published online: 20 July 2023

DOI: https://doi.org/10.1051/0004-6361/202346623

Open Access

First results from the Solar Orbiter Heavy Ion Sensor

S. Livi, S. T. Lepri, J. M. Raines, R. M. Dewey, A. B. Galvin, P. Louarn, M R. Collier, F. Allegrini, B. L. Alterman, C. M. Bert et al. (23 more)

Published online: 02 August 2023

DOI: https://doi.org/10.1051/0004-6361/202346304

Open Access

In-flight radiometric calibration of the Metis Visible Light channel using stars and comparison with STEREO-A/COR2 data

Y. De Leo, A. Burtovoi, L. Teriaca, M. Romoli, P. Chioetto, V. Andretta, M. Uslenghi, F. Landini, R. Susino, M. Pancrazzi et al. (38 more)

Published online: 07 August 2023

DOI: https://doi.org/10.1051/0004-6361/202345979

Open Access

A high-latitude coronal mass ejection observed by a constellation of coronagraphs: Solar Orbiter/Metis, STEREO-A/COR2, and SOHO/LASCO

G. Zimbardo, B. Ying, G. Nisticò, L. Feng, L. Rodríguez-García, O. Panasenco, V. Andretta, D. Banerjee, A. Bemporad, Y. De Leo et al. (28 more)

Published online: 07 August 2023

DOI: https://doi.org/10.1051/0004-6361/202346011

Open Access

Anisotropies of solar energetic electrons in the MeV range measured with Solar Orbiter/EPD/HET

S. Fleth, P. Kuehl, A. Kollhoff, R. F. Wimmer-Schweingruber, B. Heber, J. Rodríguez-Pacheco and N. Dresing

Published online: 07 August 2023

DOI: https://doi.org/10.1051/0004-6361/202345909

Open Access

Extreme-ultraviolet brightenings in the quiet Sun: Signatures in spectral and imaging data from the Interface Region Imaging Spectrograph

C. J. Nelson, F. Auchère, R. Aznar Cuadrado, K. Barczynski, E. Buchlin, L. Harra, D. M. Long, S. Parenti, H. Peter, U. Schühle et al. (6 more)

Published online: 08 August 2023

DOI: https://doi.org/10.1051/0004-6361/202346144

Open Access

Extreme-ultraviolet fine structure and variability associated with coronal rain revealed by Solar Orbiter/EUI HRI_EUV and SPICE

P. Antolin, A. Dolliou, F. Auchère, L. P. Chitta, S. Parenti, D. Berghmans, R. Aznar Cuadrado, K. Barczynski, S. Gissot, L. Harra et al. (27 more)

Published online: 17 August 2023

DOI: https://doi.org/10.1051/0004-6361/202346016

Open Access

Stereoscopic disambiguation of vector magnetograms: First applications to SO/PHI-HRT data

G. Valori, D. Calchetti, A. Moreno Vacas, É. Pariat, S. K. Solanki, P. Löschl, J. Hirzberger, S. Parenti, K. Albert, N. Albelo Jorge et al. (27 more)

Published online: 31 August 2023

DOI: https://doi.org/10.1051/0004-6361/202345859

Open Access

Particle monitoring capability of the Solar Orbiter Metis coronagraph through the increasing phase of solar cycle 25

C. Grimani, V. Andretta, E. Antonucci, P. Chioetto, V. Da Deppo, M. Fabi, S. Gissot, G. Jerse, M. Messerotti, G. Naletto et al. (19 more)

Published online: 31 August 2023

DOI: https://doi.org/10.1051/0004-6361/202346679

Open Access

A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion

M. Janvier, S. Mzerguat, P. R. Young, É. Buchlin, A. Manou, G. Pelouze, D. M. Long, L. Green, A. Warmuth, F. Schuller et al. (49 more)

Published online: 15 September 2023

DOI: https://doi.org/10.1051/0004-6361/202346321

Open Access

Evolution of dynamic fibrils from the cooler chromosphere to the hotter corona

Sudip Mandal, Hardi Peter, Lakshmi Pradeep Chitta, Sami K. Solanki, Regina Aznar Cuadrado, Udo Schühle, Luca Teriaca, Juan Martínez-Sykora, David Berghmans, Frédéric Auchère et al. (10 more)

Published online: 12 October 2023

DOI: https://doi.org/10.1051/0004-6361/202347343

Open Access

Concurrence of a Kelvin-Helmholtz instability and Kármán vortex street in the Sun’s corona

Hengyuan Wei, Zhenghua Huang, David M. Long, Hui Fu, Lidong Xia, Ming Xiong and Bo Li

Published online: 12 October 2023

DOI: https://doi.org/10.1051/0004-6361/202347313

Open Access

SPICE point spread function correction: General framework and capability demonstration

J. E. Plowman, D. M. Hassler, F. Auchère, R. Aznar Cuadrado, A. Fludra, S. Mandal and H. Peter

Published online: 02 October 2023

DOI: https://doi.org/10.1051/0004-6361/202245582

Open Access

Unusually long path length for a nearly scatter-free solar particle event observed by Solar Orbiter at 0.43 au

Robert F. Wimmer-Schweingruber, Lars Berger, Alexander Kollhoff, Patrick Kühl, Bernd Heber, Liu Yang, Verena Heidrich-Meisner, Andreas Klassen, Raúl Gomez-Herrero, Javier Rodriguez-Pacheco et al. (21 more)

Published online: 10 October 2023

DOI: https://doi.org/10.1051/0004-6361/202346319

Open Access

Intensity contrast of solar network and faculae close to the solar limb, observed from two vantage points

K. Albert, N. A. Krivova, J. Hirzberger, S. K. Solanki, A. Moreno Vacas, D. Orozco Suárez, N. Albelo Jorge, T. Appourchaux, A. Alvarez-Herrero, J. Blanco Rodríguez et al. (37 more)

Published online: 17 October 2023

DOI: https://doi.org/10.1051/0004-6361/202346037

Open Access

Beyond small-scale transients: A closer look at the diffuse quiet solar corona

J. Gorman, L. P. Chitta, H. Peter, D. Berghmans, F. Auchère, R. Aznar Cuadrado, L. Teriaca, S. K. Solanki, C. Verbeeck, E. Kraaikamp et al. (2 more)

Published online: 20 October 2023

DOI: https://doi.org/10.1051/0004-6361/202345892

Open Access

Coronal voids and their magnetic nature

J. D. Nölke, S. K. Solanki, J. Hirzberger, H. Peter, L. P. Chitta, F. Kahil, G. Valori, T. Wiegelmann, D. Orozco Suárez, K. Albert et al. (61 more)

Published online: 24 October 2023

DOI: https://doi.org/10.1051/0004-6361/202346040

Open Access

Reconstruction of total solar irradiance variability as simultaneously apparent from Solar Orbiter and Solar Dynamics Observatory

K. L. Yeo, N. A. Krivova, S. K. Solanki, J. Hirzberger, D. Orozco Suárez, K. Albert, N. Albelo Jorge, T. Appourchaux, A. Alvarez-Herrero, J. Blanco Rodríguez et al. (35 more)

Published online: 30 October 2023

DOI: https://doi.org/10.1051/0004-6361/202345872

Open Access

Multipoint study of the energy release and transport in the 28 March 2022, M4 flare using STIX, EUI, and AIA during the first Solar Orbiter nominal mission perihelion

Stefan Purkhart, Astrid M. Veronig, Ewan C. M. Dickson, Andrea Francesco Battaglia, Säm Krucker, Robert Jarolim, Bernhard Kliem, Karin Dissauer, Tatiana Podladchikova, the STIX and EUI teams

Published online: 15 November 2023

DOI: https://doi.org/10.1051/0004-6361/202346354

Open Access

Backstreaming ions at a high Mach number interplanetary shock - Solar Orbiter measurements during the nominal mission phase

A. P. Dimmock, M. Gedalin, A. Lalti, D. Trotta, Yu. V. Khotyaintsev, D. B. Graham, A. Johlander, R. Vainio, X. Blanco-Cano, P. Kajdič et al. (2 more)

Published online: 29 November 2023

DOI: https://doi.org/10.1051/0004-6361/202347006

Open Access

The existence of hot X-ray onsets in solar flares

Andrea Francesco Battaglia, Hugh Hudson, Alexander Warmuth, Hannah Collier, Natasha L. S. Jeffrey, Amir Caspi, Ewan C. M. Dickson, Jonas Saqri, Stefan Purkhart, Astrid M. Veronig et al. (2 more)

Published online: 30 November 2023

DOI: https://doi.org/10.1051/0004-6361/202347706

Open Access

SoloHI observations of coronal mass ejections observed by multiple spacecraft

P. Hess, R. C. Colaninno, A. Vourlidas, R. A. Howard and G. Stenborg

Published online: 30 November 2023

DOI: https://doi.org/10.1051/0004-6361/202346907

Open Access

Relativistic electron beams accelerated by an interplanetary shock

I. C. Jebaraj, N. Dresing, V. Krasnoselskikh, O. V. Agapitov, J. Gieseler, D. Trotta, N. Wijsen, A. Larosa, A. Kouloumvakos, C. Palmroos et al. (9 more)

Published online: 12 December 2023

DOI: https://doi.org/10.1051/0004-6361/202348120

Open Access

Source positions of an interplanetary type III radio burst and anisotropic radio-wave scattering

Xingyao Chen, Eduard P. Kontar, Nicolina Chrysaphi, Peijin Zhang, Vratislav Krupar, Sophie Musset, Milan Maksimovic, Natasha L. S. Jeffrey, Francesco Azzollini and Antonio Vecchio

Published online: 04 December 2023

DOI: https://doi.org/10.1051/0004-6361/202347185

Highlight

Open Access

Analysis of the first coronagraphic multi-band observations of a sungrazing comet

A. Bemporad, S. Pennella, K. Battams, S. Giordano, B. Gray, M. M. Knight, G. Naletto, G. Nisticò, J. C. Raymond, M. Romoli et al. (28 more)

Published online: 15 December 2023

DOI: https://doi.org/10.1051/0004-6361/202346881

Open Access

Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images

F. J. Bailén, D. Orozco Suárez, J. Blanco Rodríguez, J. C. del Toro Iniesta, H. Strecker, A. Moreno Vacas, P. Santamarina Guerrero, J. Hirzberger, K. Albert, N. Albelo Jorge et al. (43 more)

Published online: 11 January 2024

DOI: https://doi.org/10.1051/0004-6361/202346019

Open Access

A first rapid synoptic magnetic field map using SDO/HMI and SO/PHI data

P. Loeschl, G. Valori, J. Hirzberger, J. Schou, S. K. Solanki, D. Orozco Suárez, K. Albert, N. Albelo Jorge, T. Appourchaux, A. Alvarez-Herrero et al. (40 more)

Published online: 11 January 2024

DOI: https://doi.org/10.1051/0004-6361/202346046

Open Access

3D evolution of a solar flare thermal X-ray loop-top source

D. F. Ryan, S. Laube, B. Nicula, S. Krucker, S. A. Maloney, A. F. Battaglia, A. Warmuth, A. Csillaghy and D. Müller

Published online: 11 January 2024

DOI: https://doi.org/10.1051/0004-6361/202347212

Open Access

Modelling two energetic storm particle events observed by Solar Orbiter using the combined EUHFORIA and iPATH models

Zheyi Ding, Gang Li, Glenn Mason, Stefaan Poedts, Athanasios Kouloumvakos, George Ho, Nicolas Wijsen, Robert F. Wimmer-Schweingruber and Javier Rodríguez-Pacheco

Published online: 22 January 2024

DOI: https://doi.org/10.1051/0004-6361/202347506

Open Access

Investigating coronal loop morphology and dynamics from two vantage points

Sudip Mandal, Hardi Peter, James A. Klimchuk, Sami K. Solanki, Lakshmi Pradeep Chitta, Regina Aznar Cuadrado, Udo Schühle, Luca Teriaca, David Berghmans, Cis Verbeeck et al. (2 more)

Published online: 09 February 2024

DOI: https://doi.org/10.1051/0004-6361/202348776

Open Access

The multi-spacecraft high-energy solar particle event of 28 October 2021

A. Kouloumvakos, A. Papaioannou, C. O. G. Waterfall, S. Dalla, R. Vainio, G. M. Mason, B. Heber, P. Kühl, R. C. Allen, C. M. S. Cohen et al. (8 more)

Published online: 09 February 2024

DOI: https://doi.org/10.1051/0004-6361/202346045

Open Access

Combining STEREO heliospheric imagers and Solar Orbiter to investigate the evolution of the 2022 March 10 CME

B. Zhuang, N. Lugaz, N. Al-Haddad, C. Scolini, C. J. Farrugia, F. Regnault, E. E. Davies, W. Yu, R. M. Winslow and A. B. Galvin

Published online: 08 February 2024

DOI: https://doi.org/10.1051/0004-6361/202347561

Open Access

Synoptic maps from two viewpoints - Preparing for maps from SDO/HMI and SO/PHI data

P. Loeschl, J. Hirzberger, S. K. Solanki, J. Schou and G. Valori

Published online: 08 February 2024

DOI: https://doi.org/10.1051/0004-6361/202346044

Open Access

Connecting remote and in situ observations of shock-accelerated electrons associated with a coronal mass ejection

D. E. Morosan, J. Pomoell, C. Palmroos, N. Dresing, E. Asvestari, R. Vainio, E. K. J. Kilpua, J. Gieseler, A. Kumari and I. C. Jebaraj

Published online: 01 March 2024

DOI: https://doi.org/10.1051/0004-6361/202347873

Open Access

Efficiency of solar microflares in accelerating electrons when rooted in a sunspot

Jonas Saqri, Astrid M. Veronig, Andrea Francesco Battaglia, Ewan C. M. Dickson, Dale E. Gary and Säm Krucker

Published online: 04 March 2024

DOI: https://doi.org/10.1051/0004-6361/202348295

Open Access

Eruptive events with exceptionally bright emission in H I Ly-α observed by the Metis coronagraph

G. Russano, V. Andretta, Y. De Leo, L. Teriaca, M. Uslenghi, S. Giordano, D. Telloni, P. Heinzel, S. Jejčič, L. Abbo et al. (22 more)

Published online: 18 March 2024

DOI: https://doi.org/10.1051/0004-6361/202347741

Open Access

Evidence for flare-accelerated particles in large scale loops in the behind-the-limb gamma-ray solar flare of September 29, 2022

Melissa Pesce-Rollins, Karl-Ludwig Klein, Säm Krucker, Alexander Warmuth, Astrid M. Veronig, Nicola Omodei and Christian Monstein

Published online: 20 March 2024

DOI: https://doi.org/10.1051/0004-6361/202348088

Open Access

Quantifying the diffusion of suprathermal electrons by whistler waves between 0.2 and 1 AU with Solar Orbiter and Parker Solar Probe

L. Colomban, M. Kretzschmar, V. Krasnoselkikh, O. V. Agapitov, C. Froment, M. Maksimovic, M. Berthomier, Yu. V. Khotyaintsev, D. B. Graham and S. Bale

Published online: 16 April 2024

DOI: https://doi.org/10.1051/0004-6361/202347489

Open Access

Localising pulsations in the hard X-ray and microwave emission of an X-class flare

Hannah Collier, Laura A. Hayes, Sijie Yu, Andrea F. Battaglia, William Ashfield, Vanessa Polito, Louise K. Harra and Säm Krucker

Published online: 25 April 2024

DOI: https://doi.org/10.1051/0004-6361/202348652

Open Access

Comparison of magnetic data products from Solar Orbiter SO/PHI-FDT and SDO/HMI

A. Moreno Vacas, D. Orozco Suárez, H. Strecker, J. C. del Toro Iniesta, J. M. Borrero, K. Albert, S. K. Solanki, F. J. Bailén, L. R. Bellot Rubio, J. Hirzberger et al. (27 more)

Published online: 30 April 2024

DOI: https://doi.org/10.1051/0004-6361/202349096

Open Access

Statistical investigation of decayless oscillations in small-scale coronal loops observed by Solar Orbiter/EUI

Arpit Kumar Shrivastav, Vaibhav Pant, David Berghmans, Andrei N. Zhukov, Tom Van Doorsselaere, Elena Petrova, Dipankar Banerjee, Daye Lim and Cis Verbeeck

Published online: 01 May 2024

DOI: https://doi.org/10.1051/0004-6361/202346670

Open Access

Observation of solar energetic particles with Metis on board Solar Orbiter on February 25, 2023

C. Grimani, M. Fabi, A. Persici, F. Sabbatini, M. Villani, F. Frassati, E. Antonucci, M. Pancrazzi, D. Telloni, P. Kühl et al. (22 more)

Published online: 30 May 2024

DOI: https://doi.org/10.1051/0004-6361/202449386

Open Access

Identification of a single plasma parcel during a radial alignment of the Parker Solar Probe and Solar Orbiter

Etienne Berriot, Pascal Démoulin, Olga Alexandrova, Arnaud Zaslavsky and Milan Maksimovic

Published online: 04 June 2024

DOI: https://doi.org/10.1051/0004-6361/202449285

Open Access

Dynamic acceleration of energetic protons by an interplanetary collisionless shock

L. Yang, V. Heidrich-Meisner, W. Wang, R. F. Wimmer-Schweingruber, L. Wang, A. Kollhoff, L. Berger, D. Pacheco, Z. Xu, J. Rodríguez-Pacheco and G. C. Ho

Published online: 04 June 2024

DOI: https://doi.org/10.1051/0004-6361/202348723

Open Access

Energy estimation of small-scale jets from the quiet-Sun region

Fanpeng Shi, Dong Li, Zongjun Ning, Jun Xu, Yuxiang Song and Yuzhi Yang

Published online: 19 June 2024

DOI: https://doi.org/10.1051/0004-6361/202449377

Open Access

Impact of far-side structures observed by Solar Orbiter on coronal and heliospheric wind simulations

B. Perri, A. Finley, V. Réville, S. Parenti, A. S. Brun, A. Strugarek and É. Buchlin

Published online: 24 June 2024

DOI: https://doi.org/10.1051/0004-6361/202349040

Open Access

Observations of fan-spine topology by Solar Orbiter/EUI: Rotational motions and indications of Alfvén waves

E. Petrova, T. Van Doorsselaere, D. Berghmans, S. Parenti, G. Valori and J. Plowman

Published online: 24 June 2024

DOI: https://doi.org/10.1051/0004-6361/202348799

Open Access

Sausage, kink, and fluting magnetohydrodynamic wave modes identified in solar magnetic pores by Solar Orbiter/PHI

S. Jafarzadeh, L. A. C. A. Schiavo, V. Fedun, S. K. Solanki, M. Stangalini, D. Calchetti, G. Verth, D. B. Jess, S. D. T. Grant, I. Ballai et al. (18 more)

Published online: 30 July 2024

DOI: https://doi.org/10.1051/0004-6361/202449685

Open Access

Spectroscopic evidence of cool plasma in quiet Sun small-scale brightenings detected by HRIEUV on board Solar Orbiter

A. Dolliou, S. Parenti and K. Bocchialini

Published online: 06 August 2024

DOI: https://doi.org/10.1051/0004-6361/202450439

Open Access

Characteristics and energy flux distributions of decayless transverse oscillations depending on coronal regions

Daye Lim, Tom Van Doorsselaere, David Berghmans and Elena Petrova

Published online: 28 August 2024

DOI: https://doi.org/10.1051/0004-6361/202450433

Open Access

Multipoint study of the rapid filament evolution during a confined C2 flare on 28 March 2022, leading to eruption

Stefan Purkhart, Astrid M. Veronig, Bernhard Kliem, Robert Jarolim, Karin Dissauer, Ewan C. M. Dickson, Tatiana Podladchikova and Säm Krucker

Published online: 20 September 2024

DOI: https://doi.org/10.1051/0004-6361/202450092

Open Access

Assessment of the near-Sun magnetic field of the 10 March 2022 coronal mass ejection observed by Solar Orbiter

S. Koya, S. Patsourakos, M. K Georgoulis and A. Nindos

Published online: 10 October 2024

DOI: https://doi.org/10.1051/0004-6361/202450204

Open Access

Directional discontinuities in the inner heliosphere from Parker Solar Probe and Solar Orbiter observations

A. Madar, A. Opitz, G. Erdos, A. Timar, N. Biro, G. Koban, A. Szabo and Z. Nemeth

Published online: 18 October 2024

DOI: https://doi.org/10.1051/0004-6361/202450684

Open Access

First Solar Orbiter observation of a dark halo in the solar atmosphere

S. M. Lezzi, D. M. Long, V. Andretta, D. Baker, A. Dolliou, M. Murabito, S. Parenti and N. Zambrana Prado

Published online: 22 October 2024

DOI: https://doi.org/10.1051/0004-6361/202451143

Open Access

Testing the flux tube expansion factor - solar wind speed relation with Solar Orbiter data

J.-B. Dakeyo, A. P. Rouillard, V. Réville, P. Démoulin, M. Maksimovic, A. Chapiron, R. F. Pinto and P. Louarn

Published online: 29 October 2024

DOI: https://doi.org/10.1051/0004-6361/202451272

Open Access

The observational evidence that all microflares that accelerate electrons to high energies are rooted in sunspots

Andrea Francesco Battaglia, Säm Krucker, Astrid M. Veronig, Muriel Zoë Stiefel, Alexander Warmuth, Arnold O. Benz, Daniel F. Ryan, Hannah Collier and Louise Harra

Published online: 15 November 2024

DOI: https://doi.org/10.1051/0004-6361/202451152

Open Access

High-energy insights from an escaping coronal mass ejection with Solar Orbiter/STIX observations

L. A. Hayes, S. Krucker, H. Collier and D. Ryan

Published online: 13 November 2024

DOI: https://doi.org/10.1051/0004-6361/202450882

Open Access

Three-part structure of a solar coronal mass ejection observed in low coronal signatures of Solar Orbiter

Tatiana Podladchikova, Shantanu Jain, Astrid M. Veronig, Stefan Purkhart, Galina Chikunova, Karin Dissauer and Mateja Dumbović

Published online: 25 November 2024

DOI: https://doi.org/10.1051/0004-6361/202451777

Open Access

Bidirectional propagating brightenings in arch filament systems observed by Solar Orbiter/EUI

Yajie Chen, Sudip Mandal, Hardi Peter and Lakshmi Pradeep Chitta

Published online: 05 December 2024

DOI: https://doi.org/10.1051/0004-6361/202451069

Open Access

Solar flares in the Solar Orbiter era: Short-exposure EUI/FSI observations of STIX flares

Hannah Collier, Laura A. Hayes, Stefan Purkhart, Säm Krucker, Daniel F. Ryan, Vanessa Polito, Astrid M. Veronig, Louise K. Harra, David Berghmans, Emil Kraaikamp et al. (3 more)

Published online: 12 December 2024

DOI: https://doi.org/10.1051/0004-6361/202451838

Open Access

Effects of cold electron emissions on thermal plasma measurements on board Solar Orbiter spacecraft

Š. Štverák, D. Herčík, G. Nicolaou, P. Hellinger, M. Popďakunik, Yu. V. Khotyaintsev, D. O. Kataria, C. J. Owen and M. Maksimovic

Published online: 15 January 2025

DOI: https://doi.org/10.1051/0004-6361/202452030

Open Access

Radial evolution of interplanetary coronal mass ejection-associated particle acceleration observed by Solar Orbiter and ACE

Malik H. Walker, Robert C. Allen, Gang Li, George C. Ho, Glenn M. Mason, Javier Rodriguez-Pacheco, Robert F. Wimmer-Schweingruber and Athanasios Kouloumvakos

Published online: 20 January 2025

DOI: https://doi.org/10.1051/0004-6361/202450686

Open Access

Resonant interactions between suprathermal protons and ion-scale waves near an interplanetary shock

Xing-Yu Li, Liu Yang, Verena Heidrich-Meisner, Robert F. Wimmer-Schweingruber, Qiu-Gang Zong, Linghua Wang, Lars Berger, Erik Jentsch, Duncan Keilbach, Maximilian Hecht and Javier Rodríguez-Pacheco

Published online: 28 January 2025

DOI: https://doi.org/10.1051/0004-6361/202452242