Astronomy & Astrophysics (A&A)

Volume 699 (July 2025)
(in progress)

FEATURED IMAGE All

JWST colour-composite image of MACS J0138-2155 (Acebron, A., et al., 2025, A&A, 699, A101)

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Latest special issuesAll

Euclid on Sky
ZTF SN Ia DR2 (in progress)
Solar Orbiter First Results (Nominal Mission Phase) (in progress)

Open Access

The nature of the X-ray binary transient MAXI J1834–021: Clues from its first observed outburst

A. Manca, A. Marino, A. Borghese, F. Coti Zelati, G. Mastroserio, A. Sanna, J. Homan, R. M. T. Connors, M. Del Santo, M. Armas Padilla et al. (7 more)

A&A, 699 (2025) A114

Published online: 04 July 2025
Open Access

Numerical simulations of internal shocks in spherical geometry: Hydrodynamics and prompt emission

A. Charlet, J. Granot and P. Beniamini

A&A, 699 (2025) A139

Published online: 04 July 2025
Open Access

Understanding entropy in massive halos: The role of baryon decoupling

S. Molendi, M. Balboni, I. Bartalucci, S. De Grandi, M. Gaspari, F. Gastaldello, S. Ghizzardi, L. Lovisari, G. Riva, M. Rossetti and P. Tozzi

A&A, 699 (2025) A112

Published online: 04 July 2025
Open Access

Detecting galaxy – 21-cm cross-correlation during reionization

Samuel Gagnon-Hartman, James E. Davies and Andrei Mesinger

A&A, 699 (2025) A131

Published online: 04 July 2025
Open Access

CHEX-MATE: Multiprobe analysis of Abell 1689

L. Chappuis, D. Eckert, M. Sereno, A. Gavidia, J. Sayers, J. Kim, M. Rossetti, K. Umetsu, H. Saxena, I. Bartalucci et al. (19 more)

A&A, 699 (2025) A141

Published online: 04 July 2025
Open Access

GA-NIFS: Dissecting the multiple sub-structures and probing their complex interactions in the Lyα emitter galaxy CR7 at z = 6.6 with JWST/NIRSpec

C. Marconcini, F. D’Eugenio, R. Maiolino, S. Arribas, A. Bunker, S. Carniani, S. Charlot, M. Perna, B. Rodríguez Del Pino, H. Übler et al. (9 more)

A&A, 699 (2025) A154

Published online: 04 July 2025
Open Access

Dark matter fraction in disk-like galaxies over the past 10 Gyr

Gauri Sharma, Glenn van de Ven, Paolo Salucci and Marco Martorano

A&A, 699 (2025) A164

Published online: 04 July 2025
Open Access

Expanding the parameter space of 2002es-like type Ia supernovae: On the underluminous ASASSN-20jq/SN 2020qxp

S. Bose, M. D. Stritzinger, C. Ashall, E. Baron, P. Hoeflich, L. Galbany, W. B. Hoogendam, E. A. M. Jensen, C. S. Kochanek, R. S. Post et al. (16 more)

A&A, 699 (2025) A169

Published online: 04 July 2025

Most downloaded articles

4567	Press Release Highlight Open Access Detection of pure warm-hot intergalactic medium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy K. Migkas, F. Pacaud, T. Tuominen and N. Aghanim A&A, 698 (2025) A270 Published online: 19 June 2025
872	Planck 2018 results Free Access Planck 2018 results - VI. Cosmological parameters Planck Collaboration, N. Aghanim, Y. Akrami, M. Ashdown, J. Aumont, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo et al. (172 more) A&A, 641 (2020) A6 Published online: 11 September 2020
738	Press Release Open Access Deep learning inference with the Event Horizon Telescope - I. Calibration improvements and a comprehensive synthetic data library M. Janssen, C.-k. Chan, J. Davelaar, I. Natarajan, H. Olivares, B. Ripperda, J. Röder, M. Rynge and M. Wielgus A&A, 698 (2025) A60 Published online: 06 June 2025
658	Press Release Open Access Deep learning inference with the Event Horizon Telescope - III. ZINGULARITY results from the 2017 observations and predictions for future array expansions M. Janssen, C.-k. Chan, J. Davelaar and M. Wielgus A&A, 698 (2025) A62 Published online: 06 June 2025
646	Open Access Oort cloud ecology - III. The Sun’s departure from the parent star cluster shortly after the giant planets formed Simon Portegies Zwart and Shuo Huang A&A, 698 (2025) L27 Published online: 23 June 2025

Volume 699 (July 2025) (in progress)
1. JWST colour-composite image of MACS J0138-2155 (Acebron, A., et al., 2025, A&A, 699, A101)
See the table of contents
Volume 698 (June 2025)
1. Apparent sizes of giants and dwarfs for 4 wavelengths (Hauschildt, P. H., et al., 2025, A&A, 698, A47)
2. Thermal and magnetic properties of active region 13724 (Quintero Noda, C., et al., 2025, A&A, 698, A33)
3. Structured ISM in a cosmic-ray affected galaxy (Thomas, T., et al., 2025, A&A, 698, A104)
4. X-ray emitting filament connecting galaxy cluster (Migkas, K., et al., 2025, A&A, 698, A270)
See the table of contents
Volume 697 (May 2025)
1. A mosaic of ten fields from Euclid's Early Release Observations, covering objects from Galactic nebulae to clusters of galaxies
  (Credits: ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi)
  ("Euclid on Sky" Special issue, 2025, A&A, 697)
2. JWST view of a massive z=0.729 group with hot X-ray halo (Toni, G., et al., 2025, A&A, 697, A197)
See the table of contents

6678	Press Release Highlight Open Access Detection of pure warm-hot intergalactic medium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy K. Migkas, F. Pacaud, T. Tuominen and N. Aghanim A&A, 698 (2025) A270 Published online: 19 June 2025
5306	Press Release Open Access Deep learning inference with the Event Horizon Telescope - I. Calibration improvements and a comprehensive synthetic data library M. Janssen, C.-k. Chan, J. Davelaar, I. Natarajan, H. Olivares, B. Ripperda, J. Röder, M. Rynge and M. Wielgus A&A, 698 (2025) A60 Published online: 06 June 2025
3942	Planck 2018 results Free Access Planck 2018 results - VI. Cosmological parameters Planck Collaboration, N. Aghanim, Y. Akrami, M. Ashdown, J. Aumont, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo et al. (172 more) A&A, 641 (2020) A6 Published online: 11 September 2020
3733	Press Release Open Access Deep learning inference with the Event Horizon Telescope - III. ZINGULARITY results from the 2017 observations and predictions for future array expansions M. Janssen, C.-k. Chan, J. Davelaar and M. Wielgus A&A, 698 (2025) A62 Published online: 06 June 2025
3382	Press Release Open Access Deep learning inference with the Event Horizon Telescope - II. The ZINGULARITY framework for Bayesian artificial neural networks M. Janssen, C.-k. Chan, J. Davelaar and M. Wielgus A&A, 698 (2025) A61 Published online: 06 June 2025

11695	Planck 2018 results Free Access Planck 2018 results - VI. Cosmological parameters Planck Collaboration, N. Aghanim, Y. Akrami, M. Ashdown, J. Aumont, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo et al. (172 more) A&A, 641 (2020) A6 Published online: 11 September 2020
6678	Press Release Highlight Open Access Detection of pure warm-hot intergalactic medium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy K. Migkas, F. Pacaud, T. Tuominen and N. Aghanim A&A, 698 (2025) A270 Published online: 19 June 2025
5328	Gaia Data Release 3 Press Release Open Access Gaia Data Release 3 - Summary of the content and survey properties Gaia Collaboration, A. Vallenari, A. G. A. Brown, T. Prusti, J. H. J. de Bruijne, F. Arenou, C. Babusiaux, M. Biermann, O. L. Creevey, C. Ducourant et al. (446 more) A&A, 674 (2023) A1 Published online: 16 June 2023
5306	Press Release Open Access Deep learning inference with the Event Horizon Telescope - I. Calibration improvements and a comprehensive synthetic data library M. Janssen, C.-k. Chan, J. Davelaar, I. Natarajan, H. Olivares, B. Ripperda, J. Röder, M. Rynge and M. Wielgus A&A, 698 (2025) A60 Published online: 06 June 2025
4979	Euclid on Sky Open Access Euclid - I. Overview of the Euclid mission Euclid Collaboration, Y. Mellier, Abdurro’uf, J. A. Acevedo Barroso, A. Achúcarro, J. Adamek, R. Adam, G. E. Addison, N. Aghanim, M. Aguena et al. (1130 more) A&A, 697 (2025) A1 Published online: 30 April 2025

Astronomy & Astrophysics

Latest highlightsAll

Latest volumeAll

SUBSCRIBE TO OPEN (S2O)

FEATURED IMAGE All

Latest special issuesAll

The nature of the X-ray binary transient MAXI J1834–021: Clues from its first observed outburst

Numerical simulations of internal shocks in spherical geometry: Hydrodynamics and prompt emission

Understanding entropy in massive halos: The role of baryon decoupling

Detecting galaxy – 21-cm cross-correlation during reionization

CHEX-MATE: Multiprobe analysis of Abell 1689

GA-NIFS: Dissecting the multiple sub-structures and probing their complex interactions in the Lyα emitter galaxy CR7 at z = 6.6 with JWST/NIRSpec

Dark matter fraction in disk-like galaxies over the past 10 Gyr

Expanding the parameter space of 2002es-like type Ia supernovae: On the underluminous ASASSN-20jq/SN 2020qxp

Detection of pure warm-hot intergalactic medium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy

Planck 2018 results - VI. Cosmological parameters

Deep learning inference with the Event Horizon Telescope - I. Calibration improvements and a comprehensive synthetic data library

Deep learning inference with the Event Horizon Telescope - III. ZINGULARITY results from the 2017 observations and predictions for future array expansions

Oort cloud ecology - III. The Sun’s departure from the parent star cluster shortly after the giant planets formed

Detection of pure warm-hot intergalactic medium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy

Deep learning inference with the Event Horizon Telescope - I. Calibration improvements and a comprehensive synthetic data library

Planck 2018 results - VI. Cosmological parameters

Deep learning inference with the Event Horizon Telescope - III. ZINGULARITY results from the 2017 observations and predictions for future array expansions

Deep learning inference with the Event Horizon Telescope - II. The ZINGULARITY framework for Bayesian artificial neural networks

Planck 2018 results - VI. Cosmological parameters

Detection of pure warm-hot intergalactic medium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy

Gaia Data Release 3 - Summary of the content and survey properties

Deep learning inference with the Event Horizon Telescope - I. Calibration improvements and a comprehensive synthetic data library

Euclid - I. Overview of the Euclid mission

Volume 699 (July 2025) (in progress)

Volume 698 (June 2025)

Volume 697 (May 2025)

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