Related papers: GRO J1008-57: an (almost) predictable transient X-…

Suzaku observation of the transient X-ray pulsar GRO J1008-57

We report the timing and broad-band spectral properties of the Be transient high mass X-ray binary pulsar GRO J1008-57 using a Suzaku observation in the declining phase of its 2007 November-December outburst. Pulsations with a period of…

Solar and Stellar Astrophysics · Physics 2011-05-17 Sachindra Naik , Biswajit Paul , Chetan Kachhara , Santosh V. Vadawale

Temporal Variations And Spectral Properties of Be/X-ray Pulsar GRO J1008-57 Studied by INTEGRAL

Spin period variations and hard X-ray spectral properties of Be/X-ray pulsar GRO J1008-57 are studied with INTEGRAL observations. The pulsation periods at 93.66 s in 2004 and at 93.73 s in 2009 are determined. Pulse profiles of GRO J1008-57…

High Energy Astrophysical Phenomena · Physics 2015-06-18 Wei Wang

X-ray pulsar GRO J1008$-$57 as an orthogonal rotator

X-ray polarimetry is a unique way to probe the geometrical configuration of highly magnetized accreting neutron stars (X-ray pulsars). GRO J1008$-$57 is the first transient X-ray pulsar observed at two different flux levels by the Imaging…

High Energy Astrophysical Phenomena · Physics 2023-07-05 Sergey S. Tsygankov , Victor Doroshenko , Alexander A. Mushtukov , Juri Poutanen , Alessandro Di Marco , Jeremy Heyl , Fabio La Monaca , Sofia Forsblom , Christian Malacaria , Herman L. Marshall , Valery F. Suleimanov , Jiri Svoboda , Roberto Taverna , Francesco Ursini , 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 , Michal Dovčiak , Steven R. Ehlert , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Wataru Iwakiri , Svetlana G. Jorstad , Philip Kaaret , Vladimir Karas , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Henric Krawczynski , Luca Latronico , Ioannis Liodakis , Simone Maldera , Alberto Manfreda , Frédéric Marin , Andrea Marinucci , Alan P. Marscher , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Tsunefumi Mizuno , Fabio Muleri , Michela Negro , Chi-Yung Ng , Stephen L. O'Dell , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Abel Lawrence Peirson , Matteo Perri , Melissa Pesce-Rollins , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Simonetta Puccetti , Brian D. Ramsey , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Roger W. Romani , Carmelo Sgrò , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Fabrizio Tavecchio , Yuzuru Tawara , Allyn F. Tennant , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Kinwah Wu , Fei Xie , Silvia Zane

Now you see it, now you don't - the circumstellar disk in the GRO J1008--57 system

Multiwavelength observations are reported here of the Be/X-ray binary pulsar system GRO J1008-57. Over ten years worth of data are gathered together to show that the periodic X-ray outbursts are dependant on both the binary motion and the…

Astrophysics · Physics 2009-06-23 M. J. Coe , A. J. Bird , A. B. Hill , V. A. McBride , M. Schurch , J. Galache , C. A. Wilson , M. Finger , D. A. Buckley , E. Romero-Colmenero

The accretion powered spin-up of GRO J1750-27

The timing properties of the 4.45 s pulsar in the Be X-ray binary system GRO J1750-27 are examined using hard X-ray data from INTEGRAL and Swift during a Type II outburst observed during 2008. The orbital parameters of the system are…

Astrophysics · Physics 2012-11-27 S. E. Shaw , A. B. Hill , E. Kuulkers , S. Brandt , J. Chenevez , P. Kretschmar

AstroSat observations of GRO J2058+42 during the 2019 outburst

We present results from AstroSat observation of the recent outburst of GRO J2058+42, an X-ray pulsar in a Be-binary system. The source was observed on April 10, 2019 by LAXPC and SXT instruments on AstroSat during its declining phase of the…

High Energy Astrophysical Phenomena · Physics 2020-07-15 Kallol Mukerjee , H. M. Antia , Tilak Katoch

The likely Fermi detection of the Be X-ray binary GRO J1008-57: hint for gamma-ray production in neutron-star X-ray binaries

In our search for gamma-ray emission from Be X-ray binaries from analysis of the data obtained with the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope, we find likely detection of GRO J1008-57. The binary has an…

High Energy Astrophysical Phenomena · Physics 2020-11-18 Yi Xing , Zhongxiang Wang

Comprehensive Analysis of the Transient X-ray Pulsar MAXI J1409-619

We probe the properties of the transient X-ray pulsar MAXI J1409$-$619 through \textit{RXTE} and \textit{Swift} follow up observations of the outburst in 2010. We are able to phase connect the pulse arrival times for the 25 days episode…

High Energy Astrophysical Phenomena · Physics 2020-06-17 Ç. K. Dönmez , M. M. Serim , S. Ç. İnam , Ş. Şahiner , D. Çerri-Serim , A. Baykal

SRG/ART-XC and NuSTAR observations of the X-ray pulsar GRO J1008-57 in the lowest luminosity state

We report results of the first broadband observation of the transient X-ray pulsar GRO J1008-57 performed in the quiescent state. Observations were conducted quasi-simultaneously with the Mikhail Pavlinsky ART-XC telescope on board SRG and…

High Energy Astrophysical Phenomena · Physics 2021-05-12 A. Lutovinov , S. Tsygankov , S. Molkov , V. Doroshenko , A. Mushtukov , V. Arefiev , I. Lapshov , A. Tkachenko , M. Pavlinsky

Insight-HXMT firm detection of the highest energy fundamental cyclotron resonance scattering feature in the spectrum of GRO J1008-57

We report on the observation of the accreting pulsar GRO J1008-57 performed by Insight-HXMT at the peak of the source's 2017 outburst. Pulsations are detected with a spin period of 93.283(1) s. The pulse profile shows double peaks at soft…

High Energy Astrophysical Phenomena · Physics 2020-08-19 M. Y. Ge , L. Ji , S. N. Zhang , A. Santangelo , C. Z. Liu , V. Doroshenko , R. Staubert , J. L. Qu , S. Zhang , F. J. Lu , L. M. Song , T. P. Li , L. Tao , Y. P. Xu , X. L. Cao , Y. Chen , Q. C. Bu , C. Cai , Z. Chang , G. Chen , L. Chen , T. X. Chen , Y. B. Chen , Y. P. Chen , W. Cui , W. W. Cui , J. K. Deng , Y. W. Dong , Y. Y. Du , M. X. Fu , G. H. Gao , H. Gao , M. Gao , Y. D. Gu , J. Guan , C. C. Guo , D. W. Han , Y. Huang , J. Huo , S. M. Jia , L. H. Jiang , W. C. Jiang , J. Jin , Y. J. Jin , L. D. Kong , B. Li , C. K. Li , G. Li , M. S. Li , W. Li , X. Li , X. B. Li , X. F. Li , Y. G. Li , Z. W. Li , X. H. Liang , J. Y. Liao , B. S. Liu , G. Q. Liu , H. W. Liu , X. J. Liu , Y. N. Liu , B. Lu , X. F. Lu , Q. Luo , T. Luo , X. Ma , B. Meng , Y. Nang , J. Y. Nie , G. Ou , N. Sai , R. C. Shang , X. Y. Song , L. Sun , Y. Tan , Y. L. Tuo , C. Wang , G. F. Wang , J. Wang , L. J. Wang , W. S. Wang , Y. D. Wang , Y. S. Wang , X. Y. Wen , B. B. Wu , B. Y. Wu , M. Wu , G. C. Xiao , S. Xiao , S. L. Xiong , H. Xu , J. W. Yang , S. Yang , Y. J. Yang , Y. J. Yang , Q. B. Yi , Q. Q. Yin , Y. You , A. M. Zhang , C. M. Zhang , F. Zhang , H. M. Zhang , J. Zhang , T. Zhang , W. C. Zhang , W. Zhang , W. Z. Zhang , Y. Zhang , Y. F. Zhang , Y. J. Zhang , Y. Zhang , Z. Zhang , Z. Zhang , Z. L. Zhang , H. S. Zhao , X. F. Zhao , S. J. Zheng , Y. G. Zheng , D. K. Zhou , J. F. Zhou , R. L. Zhuang , Y. X. Zhu , Y. Zhu

Accretion Torque Reversals in GRO J1008-57 Revealed by Insight-HXMT

GRO J1008-57, as a Be/X-ray transient pulsar, is considered to have the highest magnetic field in known neutron star X-ray binary systems. Observational data of the X-ray outbursts in GRO J1008-57 from 2017 to 2020 were collected by the…

High Energy Astrophysical Phenomena · Physics 2021-02-25 W. Wang , Y. M. Tang , Y. L. Tuo , P. R. Epili , S. N. Zhang , L. M. Song , F. J. Lu , J. L. Qu , S. Zhang , M. Y. Ge , Y. Huang , B. Li , Q. C. Bu , C. Cai , X. L. Cao , Z. Chang , L. Chen , T. X. Chen , Y. B. Chen , Y. Chen , Y. P. Chen , W. W. Cui , Y. Y. Du , G. H. Gao , H. Gao , Y. D. Gu , J. Guan , C. C. Guo , D. W. Han , J. Huo , S. M. Jia , W. C. Jiang , J. Jin , L. D. Kong , C. K. Li , G. Li , T. P. Li , W. Li , X. Li , X. B. Li , X. F. Li , Z. W. Li , X. H. Liang , J. Y. Liao , B. S. Liu , C. Z. Liu , H. X. Liu , H. W. Liu , X. F. Lu , Q. Luo , T. Luo , R. C. Ma , X. Ma , B. Meng , Y. Nang , J. Y. Nie , G. Ou , X. Q. Ren , N. Sai , X. Y. Song , L. Sun , L. Tao , C. Wang , L. J. Wang , P. J. Wang , W. S. Wang , Y. S. Wang , X. Y. Wen , B. Y. Wu , B. B. Wu , M. Wu , G. C. Xiao , S. Xiao , S. L. Xiong , Y. P. Xu , R. J. Yang , S. Yang , J. J. Yang , Y. J. Yang , B. B. Yi , Q. Q. Yin , Y. You , F. Zhang , H. M. Zhang , J. Zhang , P. Zhang , W. Zhang , W. C. Zhang , Y. F. Zhang , Y. H. Zhang , H. S. Zhao , X. F. Zhao , S. J. Zheng , Y. G. Zheng , D. K. Zhou

Confirmation of a High Magnetic Field in GRO J1008-57

GRO J1008$-$57 is a high-mass X-ray binary for which several claims of a cyclotron resonance scattering feature near 80 keV have been reported. We use NuSTAR, Suzaku, and Swift data from its giant outburst of November 2012 to confirm the…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Eric C. Bellm , Felix Fuerst , Katja Pottschmidt , John A. Tomsick , Steven E. Boggs , Deepto Chakrabarty , Finn E. Christensen , William W. Craig , Charles J. Hailey , Fiona A. Harrison , Daniel Stern , Dominic J. Walton , Joern Wilms , William W. Zhang

Changes in the nature of the spectral continuum and the stability of the cyclotron line in the X-ray pulsar GRO J2058+42

The results of the broadband spectral and timing study of the transient X-ray pulsar GRO J2058+42 in a wide energy range at a low luminosity $L_{x} \simeq 2.5\times 10^{36}$ erg s$^{-1}$ are reported. The data revealed that the pulse…

High Energy Astrophysical Phenomena · Physics 2022-03-08 A. S. Gorban , S. V. Molkov , S. S. Tsygankov , A. A. Mushtukov , A. A. Lutovinov

Broadband X-ray characteristics of the transient pulsar GRO J2058+42

The Be X-ray binary GRO J2058+42 recently went through a Type-II outburst during March-April 2019 lasting for about 50 days. This outburst was detected with the operating all sky X-ray monitors like the Fermi-GBM, Swift-BAT and MAXI-GSC.…

High Energy Astrophysical Phenomena · Physics 2020-07-22 Sanhita Kabiraj , Biswajit Paul

XTE J2123-058: A New Neutron Star X-Ray Transient

We report on optical and RXTE observations of a new high-latitude bursting X-ray transient, XTE J2123-058. We identified the optical counterpart, measured the 5.9573 hr orbital period and constrained the binary inclination and the source…

Astrophysics · Physics 2009-10-31 John A. Tomsick , Jules P. Halpern , Jonathan Kemp , Philip Kaaret

Observations of GRO J1744-28 in quiescence with XMM-Newton

We report on the deep observations of the "bursting pulsar" GRO J1744-28, which were performed with XMM-Newton and aimed to clarify the origin of its X-ray emission in quiescence. We detect the source at a luminosity level of $\sim10^{34}$…

High Energy Astrophysical Phenomena · Physics 2020-09-29 Victor Doroshenko , Valery Suleimanov , Sergey Tsygankov , Juhani Mönkkönen , Long Ji , Andrea Santangelo

Discovery of Pulsations and a Possible Spectral Feature in the X-ray Emission from Rotating Radio Transient J1819-1458

PSR J1819-1458 is a rotating radio transient (RRAT) source with an inferred surface dipole magnetic field strength of 5e13 G and a 4.26-s spin period. We present XMM-Newton observations of the X-ray counterpart of this source, CXOU…

Astrophysics · Physics 2009-11-13 M. A. McLaughlin , N. Rea , B. M. Gaensler , S. Chatterjee , F. Camilo , M. Kramer , D. R. Lorimer , A. G. Lyne , G. L. Israel , A. Possenti

Discovery of a New Transient Magnetar Candidate: XTE J1810-197

We report the discovery of a new X-ray pulsar, XTE J1810-197. The source was serendipitously discovered on 2003 July 15 by the Rossi X-ray Timing Explorer (RXTE) while observing the soft gamma repeater SGR 1806-20. The pulsar has a 5.54 s…

Astrophysics · Physics 2009-11-10 A. I. Ibrahim , C. Markwardt , J. Swank , S. Ransom , M. Roberts , V. Kaspi , P. Woods , S. Safi-Harb , S. Balman , W. Parke , C. Kouveliotou , K. Hurley , T. Cline

Discovery of a New 89 Second X-ray Pulsar XTE J1906+09

We report on the discovery of a new pulsating X-ray source during Rossi X-ray Timing Explorer observations of a low galactic latitude field centered at RA (J2000) = 19 hr 05 m 43 s and Dec (J2000) = +08 deg 58 arcmin 48 arcsec. Significant…

Astrophysics · Physics 2009-10-30 D. Marsden , D. E. Gruber , W. A. Heindl , M. R. Pelling , R. E. Rothschild

SRG/ART-XC, Swift, NICER and NuSTAR study of different states of the transient X-ray pulsar MAXI J0903-531

The results of the broadband spectral and timing study of the recently discovered transient X-ray pulsar MAXI J0903-531 in a wide range of luminosities differing by a factor of ~30 are reported. The observed X-ray spectrum in both states…

High Energy Astrophysical Phenomena · Physics 2022-05-18 Sergey S. Tsygankov , Sergey V. Molkov , Victor Doroshenko , Alexander A. Mushtukov , Ilya A. Mereminskiy , Andrei N. Semena , Philipp Thalhammer , Joern Wilms , Alexander A. Lutovinov