Einstein Probe Discovery of EP J005245.1−722843: A Rare Be–White Dwarf Binary in the Small Magellanic Cloud?

Authors: A. Marino, H. N. Yang, F. Coti Zelati, N. Rea, S. Guillot, G. K. Jaisawal, C. Maitra, J.-U. Ness, F. Haberl, E. Kuulkers, W. Yuan, H. Feng, L. Tao, C. Jin, H. Sun, W. Zhang, W. Chen, E. P. J. van den Heuvel, R. Soria, B. Zhang, S.-S. Weng, L. Ji, G. B. Zhang, X. Pan, Z. Lv, C. Zhang, Z. X. Ling, Y. Chen, S. Jia, Y. Liu, H. Q. Cheng, D. Y. Li, K. Gendreau, M. Ng, T. Strohmayer

Source: The Astrophysical Journal Letters, Vol 980, Iss 2, p L36 (2025)

Subject Terms: Accretion, X-ray binary stars, High mass x-ray binary stars, White dwarf stars, Small Magellanic Cloud, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/a9ddc4dfc8d047bb82e8a1473bea4ec2

Is the Spin of the Black Hole in GX 339–4 Negative?

Authors: Andrzej A. Zdziarski, Srimanta Banerjee, Michał Szanecki, Ranjeev Misra, Gulab Dewangan

Source: The Astrophysical Journal Letters, Vol 981, Iss 1, p L15 (2025)

Subject Terms: X-ray binary stars, X-ray sources, Accretion, Astrophysical black holes, Rotating black holes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/4722480d2f6442e0b994c928da545681

Persistent GeV Counterpart to the Microquasar GRS 1915+105

Authors: Guillem Martí-Devesa, Laura Olivera-Nieto

Source: The Astrophysical Journal Letters, Vol 979, Iss 2, p L40 (2025)

Subject Terms: X-ray binary stars, Gamma-ray astronomy, Jets, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/0deb36925cc94f99ae9eab5663a91cdc

X-Ray and Optical Polarization Aligned with the Radio Jet Ejecta in GX 339–4

Authors: G. Mastroserio, B. De Marco, M. C. Baglio, F. Carotenuto, S. Fabiani, T. D. Russell, F. Capitanio, Y. Cavecchi, S. Motta, D. M. Russell, M. Dovčiak, M. Del Santo, K. Alabarta, A. Ambrifi, S. Campana, P. Casella, S. Covino, G. Illiano, E. Kara, E. V. Lai, G. Lodato, A. Manca, I. Mariani, A. Marino, C. Miceli, P. Saikia, A. W. Shaw, J. Svoboda, F. M. Vincentelli, J. Wang

Source: The Astrophysical Journal Letters, Vol 978, Iss 2, p L19 (2025)

Subject Terms: Accretion, Low-mass x-ray binary stars, X-ray astronomy, Radio astronomy, Astrophysical black holes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/f2725e8886704c8eab752cd92cb32ed7

Detection of Extended X-Ray Emission around the PeVatron Microquasar V4641 Sgr with XRISM

Authors: Hiromasa Suzuki, Naomi Tsuji, Yoshiaki Kanemaru, Megumi Shidatsu, Laura Olivera-Nieto, Samar Safi-Harb, Shigeo S. Kimura, Eduardo de la Fuente, Sabrina Casanova, Kaya Mori, Xiaojie Wang, Sei Kato, Dai Tateishi, Hideki Uchiyama, Takaaki Tanaka, Hiroyuki Uchida, Shun Inoue, Dezhi Huang, Marianne Lemoine-Goumard, Daiki Miura, Shoji Ogawa, Shogo B. Kobayashi, Chris Done, Maxime Parra, Maria Díaz Trigo, Teo Muñoz-Darias, Montserrat Armas Padilla, Ryota Tomaru, Yoshihiro Ueda

Source: The Astrophysical Journal Letters, Vol 978, Iss 2, p L20 (2025)

Subject Terms: Low-mass x-ray binary stars, Gamma-ray sources, Radio jets, Non-thermal radiation sources, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/ab6a235999a14d59add92bc2e33b0ade

Discovery of a New Phase-transient Cyclotron Line in A0535+26: Constraints on the Accretion Geometry

Authors: Ashwin Devaraj, Biswajit Paul, Varun Bhalerao, Dipanjan Mukherjee

Source: The Astrophysical Journal, Vol 981, Iss 2, p 205 (2025)

Subject Terms: X-ray binary stars, High mass x-ray binary stars, X-ray astronomy, Binary pulsars, Neutron stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/d59c003fe0994e4ebc4f9d10f3eaa135

Geometry of the Comptonization Region of MAXI J1348−630 through Type-C Quasiperiodic Oscillations with NICER

Authors: Kevin Alabarta, Mariano Méndez, Federico García, Diego Altamirano, Yuexin Zhang, Liang Zhang, David M. Russell, Ole König

Source: The Astrophysical Journal, Vol 980, Iss 2, p 251 (2025)

Subject Terms: Stellar accretion disks, Black holes, Low-mass x-ray binary stars, X-ray binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/e162498f30ae44d897f6f1fc8f69bcf1

Long-term Evolution of Sco X-1: Implications for the Current Spin Frequency and Ellipticity of the Neutron Star

Authors: Abhijnan Kar, Pulkit Ojha, Sudip Bhattacharyya

Source: The Astrophysical Journal, Vol 980, Iss 1, p 51 (2025)

Subject Terms: Gravitational waves, Neutron stars, Low-mass x-ray binary stars, Accretion, X-ray binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/8228d510720a45458f8a2ad9561b74e0

A possible jet and corona configuration for Swift J1727.8–1613 during the hard state

Authors: Peng, Jing-Qiang ^{a, b, ⁎}, Zhang, Shu ^{a, ⁎}, Shui, Qing-Cang ^{a, b}, Zhang, Shuang-Nan ^{a, b}, Chen, Yu-Peng ^a

Source: In Journal of High Energy Astrophysics March 2025 45:316-324

From Be X-Ray Binaries to Double Neutron Stars: Exploring the Spin and Orbital Evolution

Authors: Yungang Zhou, Dehua Wang, Chengmin Zhang

Source: Universe, Vol 11, Iss 2, p 51 (2025)

Subject Terms: pulsar, binary pulsar, Be X-ray binary, double neutron star, Elementary particle physics, QC793-793.5

File Description: electronic resource

Relation: https://www.mdpi.com/2218-1997/11/2/51; https://doaj.org/toc/2218-1997

Access URL: https://doaj.org/article/b6885646bbc141da8204f2bbd6390896

Quenching and Recovery of Persistent X-Ray Emission during a Superburst in 4U 1820–30

Authors: Zhijiao Peng, Zhaosheng Li, Yuanyue Pan, Tao Fu, Wenhui Yu, Yupeng Chen, Shu Zhang, Maurizio Falanga, Shuang-Nan Zhang

Source: The Astrophysical Journal, Vol 982, Iss 1, p 18 (2025)

Subject Terms: Low-mass x-ray binary stars, X-ray bursters, Neutron stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/f7d560e541a44d1cb93fa35cc1e001d4

New Potential Ultracompact X-Ray Binaries for Space-based Gravitational-wave Detectors from a Low-mass Main-sequence Companion Channel

Authors: Minghua Chen, Jinzhong Liu

Source: The Astrophysical Journal, Vol 981, Iss 2, p 175 (2025)

Subject Terms: X-ray binary stars, Gravitational waves, Compact binary stars, Space telescopes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/23661f58fe2d47a897ca3e2ad7e01384

Observing Rayleigh–Taylor Stable and Unstable Accretion Through a Kalman Filter Analysis of X-Ray Pulsars in the Small Magellanic Cloud

Authors: Joseph O’Leary, Andrew Melatos, Tom Kimpson, Dimitris M. Christodoulou, Nicholas J. O’Neill, Patrick M. Meyers, Sayantan Bhattacharya, Silas G.T. Laycock

Source: The Astrophysical Journal, Vol 981, Iss 2, p 150 (2025)

Subject Terms: High mass x-ray binary stars, Small Magellanic Cloud, High energy astrophysics, Binary pulsars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/7a50ec3e74a0480e8abc4b0619f0b74a

The Puzzling Superorbital Period Variation of the Low-mass X-Ray Binary 4U 1820–30

Authors: Yi Chou, Jun-Lei Wu, Bo-Chun Chen, Wei-Yun Chang

Source: The Astrophysical Journal, Vol 981, Iss 1, p 43 (2025)

Subject Terms: Low-mass x-ray binary stars, X-ray bursters, Stellar accretion disks, Close binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/81221c54018c4341b34b940fe1e1f566

Modulation of X-Ray Flux by Obscuration of Neutron Star Boundary Layer

Authors: G. Török, K. Klimovičová, D. Lančová, M. Matuszková, E. Šrámková, M. Urbanec, M. Čemeljić, R. Šprňa, V. Karas

Source: The Astrophysical Journal, Vol 981, Iss 1, p 10 (2025)

Subject Terms: Black holes, Neutron stars, X-ray binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/0534cce4835d4e249ae335b9305b0e70

A New Algorithm for Detecting X-Ray Shots in Cyg X-1

Authors: Jin Qin, Hua Feng, Lian Tao

Source: The Astrophysical Journal, Vol 981, Iss 1, p 17 (2025)

Subject Terms: Stellar mass black holes, High mass x-ray binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/147bc7c67b4d4c39af1b38bc30944899

Estimating the Black Hole Spin for the X-Ray Binary MAXI J1727-203 Based on Insight-HXMT

Authors: Haifan Zhu, Wei Wang

Source: The Astrophysical Journal, Vol 980, Iss 2, p 237 (2025)

Subject Terms: Black hole physics, Stellar accretion disks, Kerr black holes, X-ray binary stars, High energy astrophysics, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/bc28a3108d0d4ea29fda1f6f9606dc35

Simultaneous NICER and NuSTAR Observations of the Neutron Star Low-mass X-Ray Binary Serpens X-1

Authors: H. Hall, R. M. Ludlam, J. M. Miller, A. C. Fabian, J. A. Tomsick, J. Coley, J. A. García, B. M. Coughenour

Source: The Astrophysical Journal, Vol 980, Iss 2, p 234 (2025)

Subject Terms: Accretion, Neutron stars, Low-mass x-ray binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/519d83765765465bade021384cb6a5b6

Geometric Correction for Wind Accretion in Binary Systems

Authors: Emilio Tejeda, Jesús A. Toalá

Source: The Astrophysical Journal, Vol 980, Iss 2, p 226 (2025)

Subject Terms: Binary stars, Stellar accretion, Stellar winds, High mass x-ray binary stars, Symbiotic binary stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/439494f05a144f76bbf252cc1f04e48c

Observations of the X-Ray Millihertz Quasiperiodic Oscillations in Hercules X-1

Authors: Wen Yang, Wei Wang

Source: The Astrophysical Journal, Vol 980, Iss 2, p 194 (2025)

Subject Terms: X-ray binary stars, Neutron stars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/0ab6398d447f4262bba57b0a4b00731f