Related papers: NuSTAR discovery of a cyclotron line in GRO J1750-…

Discovery of cyclotron and narrow Fe K$_{\alpha}$ lines in HMXB GRO J1750-27

We report on timing and spectral analysis of transient Be X-ray pulsar GRO J1750-27 by using the Nuclear Spectroscopic Telescope Array (NuSTAR) observation from September 2021. This is the fourth outburst of the system since 1995. The…

High Energy Astrophysical Phenomena · Physics 2022-04-20 Prince Sharma , Chetana Jain , Anjan Dutta

NuSTAR Discovery of a Cyclotron Line in the Be/X-ray Binary RX J0520.5-6932 During Outburst

We present spectral and timing analysis of NuSTAR observations of RX J0520.5$-$6932 in the 3-79 keV band collected during its outburst in January 2014. The target was observed on two epochs and we report the detection of a cyclotron…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Shriharsh P. Tendulkar , Felix Fürst , Katja Pottschmidt , Matteo Bachetti , Varun B. Bhalerao , Steven E. Boggs , Finn E. Christensen , William W. Craig , Charles A. Hailey , Fiona A. Harrison , Daniel Stern , John A. Tomsick , Dominic J. Walton , William Zhang

Detection of a cyclotron line in the Be X-ray pulsar IGR J06074$+$2205

IGR J0607.4+2205 is a transient Be X-ray binary discovered two decades ago. IGR J0607.4+2205 underwent an outburst in 2023 during which it was observed twice with \textit{NuSTAR}. The main goal of this work is to model the broadband X-ray…

High Energy Astrophysical Phenomena · Physics 2024-02-28 Kinjal Roy , Rahul Sharma , Hemanth Manikantan , Biswajit Paul

NuSTAR discovery of a cyclotron line in the accreting X-ray pulsar IGR J16393-4643

The high-mass X-ray binary and accreting X-ray pulsar IGR J16393-4643 was observed by NuSTAR in the 3-79 keV energy band for a net exposure time of 50 ks. We present the results of this observation which enabled the discovery of a cyclotron…

High Energy Astrophysical Phenomena · Physics 2016-06-08 Arash Bodaghee , John A. Tomsick , Francesca A. Fornasini , Roman Krivonos , Daniel Stern , Kaya Mori , Farid Rahoui , Steven E. Boggs , Finn E. Christensen , William W. Craig , Charles J. Hailey , Fiona A. Harrison , William W. Zhang

NuSTAR Discovery of a cyclotron line in KS 1947+300

We present a spectral analysis of three simultaneous NuSTAR and Swift/XRT observations of the transient Be-neutron star binary KS 1947+300 taken during its outburst in 2013/2014. These broad-band observations were supported by Swift/XRT…

High Energy Astrophysical Phenomena · Physics 2019-08-19 Felix Fuerst , Katja Pottschmidt , Joern Wilms , Jamie Kennea , Matteo Bachetti , Eric Bellm , Steven E. Boggs , Deepto Chakrabarty , Finn E. Christensen , William W. Craig , Charles J. Hailey , Fiona Harrison , Daniel Stern1 , John A. Tomsick , Dominic J. Walton , William Zhang , Cahill Center , Caltech , USA , CSST , UMBC , USA , CRESST , GSFC , USA , Remeis-Observatory , ECAP , Germany , Penn State University , USA , Universite de Toulouse , France , CNRS , IRAP , France , SSL , UCB , USA , Kavli Institute for Astrophysics , MIT , USA , DTU Space , TU Denmark , Denmark , Columbia Astrophysics Lab , Columbia University , USA , JPL , USA , GSFC , ASD , USA

NuSTAR observation of GRO J1744-28 at low mass accretion rate

We present the spectral analysis of the LMXB GRO J1744-28 using $\sim$29 ks of NuSTAR data taken in 2017 February at a low luminosity of $3.2\times 10^{36}$ erg/s (3-50 keV). The continuum spectrum is modeled with an absorbed power-law with…

High Energy Astrophysical Phenomena · Physics 2020-11-18 O. König , F. Fürst , P. Kretschmar , R. Ballhausen , E. Sokolova-Lapa , T. Dauser , C. Sánchez-Fernández , P. B. Hemphill , M. T. Wolff , K. Pottschmidt , J. Wilms

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

GRO J1744-28: an intermediate B-field pulsar in a low mass X-ray binary

The bursting pulsar, GRO J1744-28, went again in outburst after $\sim$18 years of quiescence in mid-January 2014. We studied the broad-band, persistent, X-ray spectrum using X-ray data from a XMM-Newton observation, performed almost at the…

High Energy Astrophysical Phenomena · Physics 2015-06-24 A. D'Aì , T. Di Salvo , R. Iaria , J. A. García , A. Sanna , F. Pintore , A. Riggio , L. Burderi , E. Bozzo , T. Dauser , M. Matranga , C. G. Galiano , N. R. Robba

Broadband Observations of the Be/X-ray Binary Pulsar RX J0440.9+4431: Discovery of a Cyclotron Absorption Line

We report the results of an analysis of data obtained with the INTEGRAL, Swift and RXTE observatories during the 2010 April and September outbursts of the X-ray pulsar RX J0440.9+4431. The temporal and spectral properties of the pulsar in a…

High Energy Astrophysical Phenomena · Physics 2015-06-03 S. Tsygankov , R. Krivonos , A. Lutovinov

NuSTAR discovery of a cyclotron absorption line in the transient X-ray pulsar 2S 1553-542

We report results of a spectral and timing analysis of the poorly studied transient X-ray pulsar 2S 1553-542 using data collected with the NuSTAR and Chandra observatories and the Fermi/GBM instrument during an outburst in 2015. Properties…

High Energy Astrophysical Phenomena · Physics 2016-01-27 Sergey S. Tsygankov , Alexander A. Lutovinov , Roman A. Krivonos , Sergey V. Molkov , Peter J. Jenke , Mark H. Finger , Juri Poutanen

NuSTAR detection of a broad absorption line in IGR J06074+2205

We present the broadband X-ray study of the BeXRB pulsar IGR J06074+2205 using NuSTAR observations. The temporal and spectral characteristics of the source are investigated. We detect coherent X-ray pulsations of the source and determine…

High Energy Astrophysical Phenomena · Physics 2024-04-24 Mohammed Tobrej , Binay Rai , Manoj Ghising , Bikash Chandra Paul

A NuSTAR observation of the eclipsing binary system OAO 1657-415: The revival of the cyclotron line

OAO 1657-415 is an accreting X-ray pulsar with a high mass companion that has been observed by several telescopes over the years, in different orbital phases. Back in 1999, observations performed with Beppo-SAX lead to the detection of a…

High Energy Astrophysical Phenomena · Physics 2022-03-08 Enzo A. Saavedra , Federico A. Fogantini , Jorge A. Combi , Federico García , Sylvain Chaty

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

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

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

First characterization of Swift J1845.7-0037 with NuSTAR

The hard X-ray transient source Swift J1845.7-0037 was discovered in 2012 by Swift/BAT. However, at that time no dedicated observations of the source were performed. On Oct 2019 the source became active again, and X-ray pulsations with a…

High Energy Astrophysical Phenomena · Physics 2020-02-12 V. Doroshenko , S. Tsygankov , J. Long , A. Santangelo , S. Molkov , A. Lutovinov , L. D. Kong , S. Zhang

Detection of a cyclotron line in SXP 15.3 during its 2017 outburst

We report the results of AstroSat and NuSTAR observations of the Be/X-ray binary pulsar SXP 15.3 in the Small Magellanic Cloud during its outburst in late 2017, when the source reached a luminosity level of ~ 10^{38} erg s^{-1}, close to…

High Energy Astrophysical Phenomena · Physics 2018-08-15 Chandreyee Maitra , Biswajit Paul , Frank Haberl , Georgios Vasilopoulos

NuSTAR observations of the supergiant X-ray pulsar IGR J18027-2016: accretion from the stellar wind and possible cyclotron absorption line

We report on the first focused hard X-ray view of the absorbed supergiant system IGRJ18027-2016 performed with the NuSTAR observatory. The pulsations are clearly detected with a period of $P_{spin}=139.866(1)$ s and a pulse fraction of…

High Energy Astrophysical Phenomena · Physics 2016-12-28 A. Lutovinov , S. Tsygankov , K. Postnov , R. Krivonos , S. Molkov , J. Tomsick

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

Drop in the hard pulsed fraction and a candidate cyclotron line in IGR J16320-4751 seen by NuSTAR

We report on a timing and spectral analysis of a 50-ks NuSTAR observation of IGR J16320-4751 (= AX J1631.9-4752); a high-mass X-ray binary hosting a slowly-rotating neutron star. In this observation from 2015, the spin period was…

High Energy Astrophysical Phenomena · Physics 2023-07-12 Arash Bodaghee , Alan J. -L. Chiu , John A. Tomsick , Varun Bhalerao , Eugenio Bottacini , Maica Clavel , Cody Cox , Felix Fürst , Matthew J. Middleton , Farid Rahoui , Jerome Rodriguez , Pat Romano , Joern Wilms