Results 101 to 110 of about 497,978 (250)

Be/X-ray Binaries

, 2002
A review of basic properties of Be/X-ray binaries is presented. These systems (called also hard X-ray transients), which form the most numerous class of massive X-ray binaries in the Galaxy, are composed of Be stars and neutron stars (X-ray pulsars) on wide (orbital periods 17-263 d), usually eccentric (eccentricities 0.1-0.9) orbits.
openaire   +2 more sources

X-Ray Polarized View of the Accretion Geometry in the X-Ray Binary Circinus X-1

The Astrophysical Journal Letters
Cir X-1 is a neutron star X-ray binary characterized by strong variations in flux during its eccentric ∼16.6 day orbit. There are also strong variations in the spectral state, and it has historically shown both atoll and Z state properties.
John Rankin, Fabio La Monaca, Alessandro Di Marco, Juri Poutanen, Anna Bobrikova, Vadim Kravtsov, Fabio Muleri, Maura Pilia, Alexandra Veledina, Rob Fender, Philip Kaaret, Dawoon E. Kim, Andrea Marinucci, Herman L. Marshall, Alessandro Papitto, Allyn F. Tennant, Sergey S. Tsygankov, Martin C. Weisskopf, Kinwah Wu, Silvia Zane, Filippo Ambrosino, Ruben Farinelli, Andrea Gnarini, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccolò Di Lalla, Immacolata Donnarumma, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Jeremy Heyl, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Fabian Kislat, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Alan P. Marscher, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Michela Negro, Chi-Yung Ng, Stephen L. O’Dell, Nicola Omodei, Chiara Oppedisano, George G. Pavlov, Abel L. Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Andrea Possenti, Simonetta Puccetti, Brian D. Ramsey, Ajay Ratheesh, Oliver J. Roberts, Roger W. Romani, Carmelo Sgrò, Patrick Slane, Paolo Soffitta, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Roberto Turolla, Jacco Vink, Fei Xie   +103 more
doaj   +1 more source

Discovery of SXP265, a Be/X-ray binary pulsar in the Wing of the Small Magellanic Cloud

, 2014
We identify a new candidate for a Be/X-ray binary in the XMM-Newton slew survey and archival Swift observations that is located in the transition region of the Wing of the Small Magellanic Cloud and the Magellanic Bridge.
Bartlett, E. S., Greiner, J., Haberl, F., Maggi, P., Rau, A., Sturm, R., Udalski, A., Vasilopoulos, G.   +7 more
core   +1 more source

Fast optical variability in Supergiant X-ray binaries [PDF]

A&A 693, A242 (2025)
The main goal of this work is to investigate the fast photometric variability of the optical counterparts to supergiant X-ray binaries and to compare the general patterns of such variability with the Galactic population of other early-type stars. We analyzed a sample of 14 high-mass X-ray binaries with supergiant companions observed by the Transiting ...
arxiv   +1 more source

Populations of X-ray binaries and the dynamical history of their host galaxies [PDF]

, 2001
The observed luminosity distributions of X-ray sources indicate the presence of several populations of X-ray binaries in the nearby galaxies. Each population has its formation and evolutionary history, depending on the host environment. The features seen in the log N($>$S) -- log S curves for different types of galaxies and for different galactic ...
arxiv   +1 more source

Accretion flows in X–ray binaries

Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002
I review the X-ray observations of Galactic accreting black holes and neutron stars, and interpretions of these in terms of solutions of the accretion flow equations.
openaire   +5 more sources

RXJ0123.4-7321, a Be/X-ray binary in the wing of the SMC

, 2013
To confirm faint Be/X-ray binary candidates from the XMM-Newton survey of the Small Magellanic Cloud, we searched for X-ray outbursts in archival ROSAT observations.
Haberl, F., Pietsch, W., Sturm, R., Udalski, A.   +3 more
core   +1 more source

Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070. [PDF]

Nat Commun, 2021
You B, Tuo Y, Li C, Wang W, Zhang SN, Zhang S, Ge M, Luo C, Liu B, Yuan W, Dai Z, Liu J, Qiao E, Jin C, Liu Z, Czerny B, Wu Q, Bu Q, Cai C, Cao X, Chang Z, Chen G, Chen L, Chen T, Chen Y, Chen Y, Chen Y, Cui W, Cui W, Deng J, Dong Y, Du Y, Fu M, Gao G, Gao H, Gao M, Gu Y, Guan J, Guo C, Han D, Huang Y, Huo J, Jia S, Jiang L, Jiang W, Jin J, Jin Y, Kong L, Li B, Li C, Li G, Li M, Li T, Li W, Li X, Li X, Li X, Li Y, Li Z, Liang X, Liao J, Liu C, Liu G, Liu H, Liu X, Liu Y, Lu B, Lu F, Lu X, Luo Q, Luo T, Ma X, Meng B, Nang Y, Nie J, Ou G, Qu J, Sai N, Shang R, Song L, Song X, Sun L, Tan Y, Tao L, Wang C, Wang G, Wang J, Wang L, Wang W, Wang Y, Wen X, Wu B, Wu B, Wu M, Xiao G, Xiao S, Xiong S, Xu Y, Yang J, Yang S, Yang Y, Yi Q, Yin Q, You Y, Zhang A, Zhang C, Zhang F, Zhang H, Zhang J, Zhang T, Zhang W, Zhang W, Zhang W, Zhang Y, Zhang Y, Zhang Y, Zhang Y, Zhang Z, Zhang Z, Zhao H, Zhao X, Zheng S, Zhou D, Zhou J, Zhu Y, Zhu Y.   +125 more
europepmc   +1 more source

Binaries with Compact Components: Theoretical and Observational Challenges [PDF]

arXiv, 2004
We report on recent progress in our theoretical understanding of X-ray binaries, which has largely been driven by new observations, and illustrate the interplay between theory and observations considering as examples intermediate-mass X-ray binaries, irradiation-driven evolution, ultraluminous X-ray sources and neutron stars with low-velocity kicks.
arxiv  

Evidence for a Cyclotron Absorption Line and Spectral Transition in EXO 2030+375 during the 2021 Giant Outburst

The Astrophysical Journal
Based on Insight-HXMT observations of EXO 2030+375 during its 2021 giant outburst, we report the analysis of pulse variations and the broadband X-ray spectrum, and find the presence of a potential cyclotron resonant scattering feature (CRSF) with the ...
Wen Yang, Wei Wang, Prahlad R. Epili
doaj   +1 more source