Related papers: Linking burst-only X-ray binary sources to faint X…

Transient Low-Mass X-Ray Binaries in Quiescence

We summarize the quiescent X-ray observations of transient low-mass X-ray binaries. These observations show that, in quiescence, binaries containing black holes are fainter than those containing neutron stars. This has triggered a number of…

Astrophysics · Physics 2007-05-23 L. Bildsten , R. E. Rutledge

Swift J1734.5-3027: a new long type-I X-ray bursting source

Swift J1734.5-3027 is a hard X-ray transient discovered by Swift while undergoing an outburst in September 2013. Archival observations showed that this source underwent a previous episode of enhanced X-ray activity in May-June 2013. In this…

High Energy Astrophysical Phenomena · Physics 2015-07-01 E. Bozzo , P. Romano , M. Falanga , C. Ferrigno , A. Papitto , H. A. Krimm

The very faint X-ray transient Swift J174610-290018 at the Galactic center

Very Faint X-ray Transients (VFXTs) are a class of X-ray binary systems that exhibit occasional outbursts with peak X-ray luminosities (L_X< 1e36 erg s^-1) much lower than typical X-ray transients. On 22nd February 2024, during its daily…

High Energy Astrophysical Phenomena · Physics 2026-01-21 Giovanni Stel , Gabriele Ponti , Nathalie Degenaar , Lara Sidoli , Sandro Mereghetti , Kaya Mori , Tong Bao , Giulia Illiano , Samaresh Mondal , Mark Reynolds , Chichuan Jin , Tianying Lian , Shifra Mandel , Simone Scaringi , Shuo Zhang , Grace Sanger-Johnson , Rudy Wijnands , Jon M. Miller , Jamie Kennea , Zhenlin Zhu

The behavior of subluminous X-ray transients near the Galactic center as observed using the X-ray telescope aboard Swift

In this paper we report on the spectral analysis of seven X-ray transients, which were found to be active during a monitoring campaign of the Galactic center carried out in 2006 and 2007 using the X-ray telescope aboard the Swift satellite.…

Astrophysics · Physics 2009-11-13 N. Degenaar , R. Wijnands

X-ray variability with spectral state transitions in NS-LMXBs observed with MAXI/GSC and Swift/BAT

X-ray variabilities with spectral state transitions in bright low mass X-ray binaries containing a neutron star are investigated by using the one-day bin light curves of MAXI/GSC (Gas Slit Camera) and Swift/BAT (Burst Alert Telescope). Four…

High Energy Astrophysical Phenomena · Physics 2015-09-16 Kazumi Asai , Tatehiro Mihara , Masaru Matsuoka , Mutsumi Sugizaki

Multi-band observations of Swift J0840.7-3516: a new transient ultra-compact X-ray binary candidate

We report on multi-band observations of the transient source Swift J0840.7-3516, which was detected in outburst in 2020 February by the Neil Gehrels Swift Observatory. The outburst episode lasted just ~5 days, during which the X-ray…

High Energy Astrophysical Phenomena · Physics 2021-06-09 F. Coti Zelati , A. de Ugarte Postigo , T. D. Russell , A. Borghese , N. Rea , P. Esposito , G. L. Israel , S. Campana

Short term aperiodic variability of X-ray binaries: its origin and implications

In this review I briefly describe the latest advances in studies of aperiodic variability of accreting X-ray binaries and outline the model which currently describe the majority of observational appearances of variability of accreting…

Astrophysics · Physics 2014-11-18 M. Revnivtsev

X-ray emission and absorption features during an energetic thermonuclear X-ray burst from IGR J17062-6143

Type-I X-ray bursts are thermonuclear explosions occurring in the surface layers of accreting neutron stars. These events are powerful probes of the physics of neutron stars and their surrounding accretion flow. We analyze a very energetic…

High Energy Astrophysical Phenomena · Physics 2015-06-12 N. Degenaar , J. M. Miller , R. Wijnands , D. Altamirano , A. C. Fabian

Constraints on Minute-Scale Transient Astrophysical Neutrino Sources

High-energy neutrino emission has been predicted for several short-lived astrophysical transients including gamma-ray bursts (GRBs), core-collapse supernovae with choked jets and neutron star mergers. IceCube's optical and X-ray follow-up…

High Energy Astrophysical Phenomena · Physics 2019-02-28 M. G. Aartsen , M. Ackermann , J. Adams , J. A. Aguilar , M. Ahlers , M. Ahrens , I. Al Samarai , D. Altmann , K. Andeen , T. Anderson , I. Ansseau , G. Anton , C. Argüelles , J. Auffenberg , S. Axani , P. Backes , H. Bagherpour , X. Bai , A. Barbano , J. P. Barron , S. W. Barwick , V. Baum , R. Bay , J. J. Beatty , J. Becker Tjus , K. -H. Becker , S. BenZvi , D. Berley , E. Bernardini , D. Z. Besson , G. Binder , D. Bindig , E. Blaufuss , S. Blot , C. Bohm , M. Börner , F. Bos , S. Böser , O. Botner , E. Bourbeau , J. Bourbeau , F. Bradascio , J. Braun , M. Brenzke , H. -P. Bretz , S. Bron , J. Brostean-Kaiser , A. Burgman , R. S. Busse , T. Carver , E. Cheung , D. Chirkin , A. Christov , K. Clark , L. Classen , G. H. Collin , J. M. Conrad , P. Coppin , P. Correa , D. F. Cowen , R. Cross , P. Dave , M. Day , J. P. A. M. de André , C. De Clercq , J. J. DeLaunay , H. Dembinski , K. Deoskar , S. De Ridder , P. Desiati , K. D. de Vries , G. de Wasseige , M. de With , T. DeYoung , J. C. Díaz-Vélez , V. di Lorenzo , H. Dujmovic , J. P. Dumm , M. Dunkman , E. Dvorak , B. Eberhardt , T. Ehrhardt , B. Eichmann , P. Eller , P. A. Evans , P. A. Evenson , S. Fahey , A. R. Fazely , J. Felde , K. Filimonov , C. Finley , A. Franckowiak , E. Friedman , A. Fritz , T. K. Gaisser , J. Gallagher , E. Ganster , L. Gerhardt , K. Ghorbani , W. Giang , T. Glauch , T. Glüsenkamp , A. Goldschmidt , J. G. Gonzalez , D. Grant , Z. Griffith , C. Haack , A. Hallgren , L. Halve , F. Halzen , K. Hanson , D. Hebecker , D. Heereman , K. Helbing , R. Hellauer , S. Hickford , J. Hignight , G. C. Hill , K. D. Hoffman , R. Hoffmann , T. Hoinka , B. Hokanson-Fasig , K. Hoshina , F. Huang , M. Huber , K. Hultqvist , M. Hünnefeld , R. Hussain , S. In , N. Iovine , A. Ishihara , E. Jacobi , G. S. Japaridze , M. Jeong , K. Jero , B. J. P. Jones , P. Kalaczynski , W. Kang , A. Kappes , D. Kappesser , T. Karg , A. Karle , U. Katz , M. Kauer , A. Keivani , J. L. Kelley , A. Kheirandish , J. Kim , T. Kintscher , J. Kiryluk , T. Kittler , S. R. Klein , R. Koirala , H. Kolanoski , L. Köpke , C. Kopper , S. Kopper , J. P. Koschinsky , D. J. Koskinen , M. Kowalski , K. Krings , M. Kroll , G. Krückl , S. Kunwar , N. Kurahashi , A. Kyriacou , M. Labare , J. L. Lanfranchi , M. J. Larson , F. Lauber , K. Leonard , M. Leuermann , Q. R. Liu , E. Lohfink , C. J. Lozano Mariscal , L. Lu , J. Lünemann , W. Luszczak , J. Madsen , G. Maggi , K. B. M. Mahn , Y. Makino , S. Mancina , I. C. Mariş , R. Maruyama , K. Mase , R. Maunu , K. Meagher , M. Medici , M. Meier , T. Menne , G. Merino , T. Meures , S. Miarecki , J. Micallef , G. Momenté , T. Montaruli , R. W. Moore , M. Moulai , R. Nagai , R. Nahnhauer , P. Nakarmi , U. Naumann , G. Neer , H. Niederhausen , S. C. Nowicki , D. R. Nygren , A. Obertacke Pollmann , A. Olivas , A. O'Murchadha , J. P. Osborne , E. O'Sullivan , T. Palczewski , H. Pandya , D. V. Pankova , P. Peiffer , J. A. Pepper , C. Pérez de los Heros , D. Pieloth , E. Pinat , A. Pizzuto , M. Plum , P. B. Price , G. T. Przybylski , C. Raab , M. Rameez , L. Rauch , K. Rawlins , I. C. Rea , R. Reimann , B. Relethford , G. Renzi , E. Resconi , W. Rhode , M. Richman , S. Robertson , M. Rongen , C. Rott , T. Ruhe , D. Ryckbosch , D. Rysewyk , I. Safa , S. E. Sanchez Herrera , A. Sandrock , J. Sandroos , M. Santander , S. Sarkar , K. Satalecka , M. Schaufel , P. Schlunder , T. Schmidt , A. Schneider , J. Schneider , S. Schöneberg , L. Schumacher , S. Sclafani , D. Seckel , S. Seunarine , J. Soedingrekso , D. Soldin , M. Song , G. M. Spiczak , C. Spiering , J. Stachurska , M. Stamatikos , T. Stanev , A. Stasik , R. Stein , J. Stettner , A. Steuer , T. Stezelberger , R. G. Stokstad , A. Stößl , N. L. Strotjohann , T. Stuttard , G. W. Sullivan , M. Sutherland , I. Taboada , F. Tenholt , S. Ter-Antonyan , A. Terliuk , S. Tilav , P. A. Toale , M. N. Tobin , C. Tönnis , S. Toscano , D. Tosi , M. Tselengidou , C. F. Tung , A. Turcati , C. F. Turley , B. Ty , E. Unger , M. A. Unland Elorrieta , M. Usner , J. Vandenbroucke , W. Van Driessche , D. van Eijk , N. van Eijndhoven , S. Vanheule , J. van Santen , M. Vraeghe , C. Walck , A. Wallace , M. Wallraff , F. D. Wandler , N. Wandkowsky , T. B. Watson , A. Waza , C. Weaver , M. J. Weiss , C. Wendt , J. Werthebach , S. Westerhoff , B. J. Whelan , N. Whitehorn , K. Wiebe , C. H. Wiebusch , L. Wille , D. R. Williams , L. Wills , M. Wolf , J. Wood , T. R. Wood , E. Woolsey , K. Woschnagg , G. Wrede , D. L. Xu , X. W. Xu , Y. Xu , J. P. Yanez , G. Yodh , S. Yoshida , T. Yuan

Discovery of type-I X-ray bursts from GRS 1741.9-2853

For the first time X-ray bursts have been detected from a sky position consistent with the one of GRS 1741.9-2853, a GRANAT transient source located only ~10' from the Galactic Centre. A total of 3 bursts have been observed by the Wide…

Astrophysics · Physics 2007-05-23 M. Cocchi , A. Bazzano , L. Natalucci , P. Ubertini , J. Heise , J. M. Muller , J. J. M. in 't Zand

Bursts from GS 1826-238: a clocked thermonuclear flashes generator

The transient X-ray source GS 1826-238 was monitored during five different observing periods between August 1996 and October 1998 with the BeppoSAX Wide Field Camera instrument in the framework of a deep observation of the Galactic Center…

Astrophysics · Physics 2009-10-31 P. Ubertini , A. Bazzano , M. Cocchi , L. Natalucci , J. Heise , J. M. Muller , J. J. M. in 't Zand

Tracing the outburst decay of soft X-ray transients Aql X-1 and 4U 1608-52 with XSPECT

XSPECT instrument on-board XPoSat mission is a soft X-ray spectrometer sensitive in the energy band 0.8$-$15 keV. XSPECT has observed several bright neutron star low mass X-ray binaries since launch. Two well known sources, Aql X-1 and 4U…

High Energy Astrophysical Phenomena · Physics 2026-05-18 Rwitika Chatterjee , Vivek Kumar Agrawal , V. P. Shyam Prakash , Koushal Vadodariya , Radhakrishna V

New insights into the quasi-periodic X-ray burster GS 0836-429

GS 0836-429 is a neutron star X-ray transient that displays Type-I X-ray bursts. In 2003 and 2004 it experienced two outbursts in X-rays. We present here an analysis of the system bursting properties during these outbursts. We studied the…

High Energy Astrophysical Phenomena · Physics 2016-02-10 E. Aranzana , C. Sánchez-Fernández , E. Kuulkers

A peculiar thermonuclear X-ray burst from the transiently accreting neutron star SAX J1810.8-2609

We report on a thermonuclear (type-I) X-ray burst that was detected from the neutron star low-mass X-ray binary SAX J1810.8-2609 in 2007 with Swift. This event was longer (~20 min) and more energetic (a radiated energy of Eb~6.5E39 erg)…

High Energy Astrophysical Phenomena · Physics 2015-06-11 N. Degenaar , R. Wijnands

Catalog of outbursts of neutron star LMXBs

Many X-ray binaries are transiently accreting. Having statistics on their recurrence times is helpful to address questions related to binary evolution and populations, as well as the physics of binary systems. We compile a catalog of known…

High Energy Astrophysical Phenomena · Physics 2025-10-16 Craig O. Heinke , Junwen Zheng , Thomas J. Maccarone , Nathalie Degenaar , Arash Bahramian , Gregory R. Sivakoff , Simrat Toor

X-ray eruptions every 22 days from the nucleus of a nearby galaxy

Galactic nuclei showing recurrent phases of activity and quiescence have recently been discovered, with recurrence times as short as a few hours to a day -- known as quasi-periodic X-ray eruption (QPE) sources -- to as long as hundreds to a…

High Energy Astrophysical Phenomena · Physics 2024-01-17 Muryel Guolo , Dheeraj R. Pasham , Michal Zajaček , Eric R. Coughlin , Suvi Gezari , Petra Suková , Thomas Wevers , Vojtěch Witzany , Francesco Tombesi , Sjoert van Velzen , Kate D. Alexander , Yuhan Yao , Riccardo Arcodia , Vladimır Karas , James Miller-Jones , Ronald Remillard , Keith Gendreau , Elizabeth C. Ferrara

Searching for the most powerful thermonuclear X-ray bursts with the Neil Gehrels Swift Observatory

We searched for thermonuclear X-ray bursts from Galactic neutron stars in all event mode data of the Neil Gehrels Swift Observatory collected until March 31, 2018. In particular, we are interested in the intermediate-duration bursts (shell…

High Energy Astrophysical Phenomena · Physics 2019-01-16 J. J. M. in 't Zand , M. J. W. Kries , D. M. Palmer , N. Degenaar

High-energy transients: thermonuclear (type-I) X-ray bursts

Many distinct classes of high-energy variability have been observed in astrophysical sources, on a range of timescales. The widest range (spanning microseconds-decades) is found in accreting, stellar-mass compact objects, including neutron…

High Energy Astrophysical Phenomena · Physics 2019-09-09 Duncan K. Galloway , Zac Johnston , Adelle Goodwin , Alexander Heger

Demonstrating the likely neutron star nature of five M31 globular cluster sources with Swift-NuSTAR spectroscopy

We present the results of a joint Swift-NuSTAR spectroscopy campaign on M31. We focus on the five brightest globular cluster X-ray sources in our fields. Two of these had previously been argued to be black hole candidates on the basis of…

High Energy Astrophysical Phenomena · Physics 2016-03-23 Thomas J. Maccarone , Mihoko Yukita , Ann Hornschemeier , Bret D. Lehmer , Vallia Antoniou , Andrew Ptak , Daniel R. Wik , Andreas Zezas , Padi Boyd , Jamie Kennea , Kim Page , Mike Eracleous , Benjamin F. Williams , Steven E. Boggs , Finn E. Christensen , William W. Craig , Charles J. Hailey , Fiona Harrison , Dan Stern , William W. Zhang

The return of the bursts: Thermonuclear flashes from Circinus X-1

We report the detection of 15 X-ray bursts with RXTE and Swift observations of the peculiar X-ray binary Circinus X-1 during its May 2010 X-ray re-brightening. These are the first X-ray bursts observed from the source after the initial…

High Energy Astrophysical Phenomena · Physics 2015-05-19 M. Linares , A. Watts , D. Altamirano , P. Soleri , N. Degenaar , Y. Yang , R. Wijnands , P. Casella , J. Homan , D. Chakrabarty , N. Rea , M. Armas-Padilla , Y. Cavecchi , M. Kalamkar , R. Kaur , A. Patruno , M. van der Klis