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X-Ray Sources in the 1.75 Ms Ultra Narrow Deep Field Observed by XMM-Newton

M. Elías-Chávez, A. L. Longinotti, Y. Krongold, C. Vignali, F. Nicastro, D. Rosa-González, Y. D. Mayya and S. Mathur
The Astrophysical Journal 919 (1) 18 (2021)
https://doi.org/10.3847/1538-4357/ac0d5d

Improving Damped Random Walk Parameters for SDSS Stripe 82 Quasars with Pan-STARRS1

Krzysztof L. Suberlak, Željko Ivezić and Chelsea MacLeod
The Astrophysical Journal 907 (2) 96 (2021)
https://doi.org/10.3847/1538-4357/abc698

Analysis of the Unconcentrated Background of the EPIC pn Camera on Board XMM-Newton

Martino Marelli, Silvano Molendi, Mariachiara Rossetti, Fabio Gastaldello, David Salvetti, Andrea De Luca, Iacopo Bartalucci, Patrick Kühl, Paolo Esposito, Simona Ghizzardi and Andrea Tiengo
The Astrophysical Journal 908 (1) 37 (2021)
https://doi.org/10.3847/1538-4357/abcfbc

Multiwavelength Quasi-periodic Pulsations in a Stellar Superflare

Dmitrii Y. Kolotkov, Valery M. Nakariakov, Robin Holt and Alexey A. Kuznetsov
The Astrophysical Journal Letters 923 (2) L33 (2021)
https://doi.org/10.3847/2041-8213/ac432e

The XMM-SERVS Survey: XMM-Newton Point-source Catalogs for the W-CDF-S and ELAIS-S1 Fields

Qingling Ni, W. N. Brandt, Chien-Ting Chen, Bin Luo, Kristina Nyland, Guang Yang, Fan Zou, James Aird, David M. Alexander, Franz Erik Bauer, Mark Lacy, Bret D. Lehmer, Labani Mallick, Mara Salvato, Donald P. Schneider, Paolo Tozzi, Iris Traulsen, Mattia Vaccari, Cristian Vignali, Fabio Vito, Yongquan Xue, Manda Banerji, Kate Chow, Andrea Comastri, Agnese Del Moro, et al.
The Astrophysical Journal Supplement Series 256 (1) 21 (2021)
https://doi.org/10.3847/1538-4365/ac0dc6

Testing the cosmic curvature at high redshifts: the combination of LSST strong lensing systems and quasars as new standard candles

Tonghua Liu, Shuo Cao, Jia Zhang, et al.
Monthly Notices of the Royal Astronomical Society 496 (1) 708 (2020)
https://doi.org/10.1093/mnras/staa1539

The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary and a focused wind CV

A W Shaw, C O Heinke, T J Maccarone, et al.
Monthly Notices of the Royal Astronomical Society 492 (3) 4344 (2020)
https://doi.org/10.1093/mnras/staa105

Characterization of very wide companion candidates to young stars with planets and disks

F. Z. Majidi, S. Desidera, J. M. Alcalá, et al.
Astronomy & Astrophysics 644 A169 (2020)
https://doi.org/10.1051/0004-6361/202039031

X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field

Naomi Ota, Ikuyuki Mitsuishi, Yasunori Babazaki, Hiroki Akamatsu, Yuto Ichinohe, Shutaro Ueda, Nobuhiro Okabe, Masamune Oguri, Ryuichi Fujimoto, Takashi Hamana, Keita Miyaoka, Satoshi Miyazaki, Hanae Otani, Keigo Tanaka, Ayumi Tsuji and Atsushi Yoshida
Publications of the Astronomical Society of Japan 72 (1) (2020)
https://doi.org/10.1093/pasj/psz118