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The bursting pulsar GRO J1744-28 is a Galactic low-mass X-ray binary that distinguishes itself by displaying type-II X-ray bursts: brief, bright flashes of X-ray emission that likely arise from spasmodic accretion. Combined with its…

高能天体物理现象 · 物理学 2015-06-23 N. Degenaar , J. M. Miller , F. A. Harrison , J. A. Kennea , C. Kouveliotou , G. Younes

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…

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…

高能天体物理现象 · 物理学 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

The unusual properties of the bursting X-ray pulsar GRO J1744-28 are explained in terms of a low-mass X-ray binary system consisting of an evolved stellar companion transferring mass through Roche-lobe overflow onto a neutron star, implying…

天体物理学 · 物理学 2009-10-28 Steven J. Sturner , Charles D. Dermer

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 $\sim10^{34}$…

高能天体物理现象 · 物理学 2020-09-29 Victor Doroshenko , Valery Suleimanov , Sergey Tsygankov , Juhani Mönkkönen , Long Ji , Andrea Santangelo

Due to observational challenges our knowledge of low-level accretion flows around neutron stars is limited. We present Nustar, Swift and Chandra observations of the low-mass X-ray binary IGR J17062-6143, which has been persistently…

高能天体物理现象 · 物理学 2016-09-28 N. Degenaar , C. Pinto , J. M. Miller , R. Wijnands , D. Altamirano , F. Paerels , A. C. Fabian , D. Chakrabarty

Using simultaneous observations from Chandra and RXTE, we investigated the LMXB GS 1826-238 with the goal of studying its spectral and timing properties. The uninterrupted Chandra observation captured 6 bursts (RXTE saw 3 of the 6),…

天体物理学 · 物理学 2009-11-13 T. W. J. Thompson , R. E. Rothschild , J. A. Tomsick , H. L. Marshall

The source GS~1826-24 is a neutron star low mass X-ray binary known as the 'clocked burster' because of its extremely regular bursting behavior. We report on the detection of a long type-I X-ray burst from this source. We perform a detailed…

高能天体物理现象 · 物理学 2025-08-21 Aditya S. Mondal , Mayukh Pahari , Gulab C. Dewangan

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…

高能天体物理现象 · 物理学 2022-04-20 Prince Sharma , Chetana Jain , Anjan Dutta

We present the results of the GRANAT/SIGMA hard X-/soft gamma-ray long-term monitoring of the Galactic Center (GC) region concerning the source GRO J1744-28, discovered on 1995 Dec. 2 by CGRO/BATSE. SIGMA observed the region containing the…

We present the high-resolution spectrum of the accretion-powered millisecond pulsar XTE J0929-314 during its 2002 outburst, measured using the Low Energy Transmission Grating Spectrometer onboard the Chandra X-ray Observatory. The 1.5-25.3…

天体物理学 · 物理学 2009-11-07 Adrienne M. Juett , Duncan K. Galloway , Deepto Chakrabarty

A comprehensive study on persistent and thermonuclear burst emission of 4U 1728-34, commonly known as 'Slow Burster' is performed using seven archival observations of AstroSat spanning from 2016-2019. The burst-free persistent spectra can…

高能天体物理现象 · 物理学 2024-12-12 Anirudh Salgundi , Suman Bala , Gayathri Raman , Utkarsh Pathak , Varun Bhalerao

We present a spectral and timing study of the NuSTAR and Swift observations of the black hole candidate IGR J17091-3624 in the hard state during its outburst in 2016. Disk reflection is detected in each of the NuSTAR spectra taken in three…

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.…

高能天体物理现象 · 物理学 2020-07-22 Sanhita Kabiraj , Biswajit Paul

We present a Chandra/ACIS-I observation of GRO J1744-28. We detected a source at a position of R.A = 17h 44m 33.09s and Dec. = -28degr 44' 27.0'' (J2000.0; with a 1sigma error of ~0.8 arcseconds), consistent with both ROSAT and…

天体物理学 · 物理学 2009-11-07 Rudy Wijnands , Q. Daniel Wang

GRO J1744-28, commonly known as the `Bursting Pulsar', is a low mass X-ray binary containing a neutron star and an evolved giant star. This system, together with the Rapid Burster (MXB 1730-33), are the only two systems that display the…

高能天体物理现象 · 物理学 2018-09-05 J. M. C. Court , D. Altamirano , A. C. Albayati , A. Sanna , T. Belloni , T. Overton , N. Degenaar , R. Wijnands , K. Yamaoka , A. B. Hill , C. Knigge

We present an analysis of BeppoSAX observations of the unique transient bursting X-ray pulsar GRO J1744-28. The observations took place in March 1997 during the decay phase of the outburst. We find that the persistent broadband X-ray…

高能天体物理现象 · 物理学 2015-04-01 R. Doroshenko , A. Santangelo , V. Doroshenko , V. Suleimanov , S. Piraino

We report the ASCA results of the bursting X-ray pulsar \gro, which was observed in February 1996 and March 1997. The source flux in the 2--10 keV band was $2.0\times10^{-8}$ erg/sec/cm$^2$ in 1996 and $5.0\times10^{-9}$ erg/sec/cm$^2$ in…

天体物理学 · 物理学 2019-08-17 M. Nishiuchi , K. Koyama , Y. Maeda , K. Asai , T. Dotani , H. Inoue , K. Mitsuda , F. Nagase , Y. Ueda , C. Kouveliotou

IGR J17591-2342 is a recently INTEGRAL discovered accreting millisecond X-ray pulsar that went into outburst around July 21, 2018. To better understand the physics acting in these systems during the outburst episode we performed detailed…

高能天体物理现象 · 物理学 2020-09-09 L. Kuiper , S. S. Tsygankov , M. Falanga , I. A. Mereminskij , D. K. Galloway , J. Poutanen , Z. Li

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…

高能天体物理现象 · 物理学 2020-07-15 Kallol Mukerjee , H. M. Antia , Tilak Katoch
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