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Related papers: Self-organized criticality in type I X-ray bursts

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At the end of March 2004, the blazar S5 0716+714 underwent an optical outburst that prompted for quasi-simultaneous target-of-opportunity observations with the INTEGRAL and XMM-Newton satellites. In this paper, we report the results of the…

The X-ray burster GS 1826-24 shows extremely regular Type I X-ray bursts whose energetics and recurrence times agree well with thermonuclear ignition models. We present calculations of sequences of burst lightcurves using multizone models…

Astrophysics · Physics 2009-11-13 Alexander Heger , Andrew Cumming , Duncan K. Galloway , Stanford E. Woosley

Two flares with a duration of several hours are reported for the low-mass X-ray binary 4U 1636-53. The characteristics of these flares (i.e., decay time scales, spectral softening, fluences) are very similar to the very long type-I X-ray…

Astrophysics · Physics 2009-11-06 Rudy Wijnands

This study investigates the timing and spectral characteristics of X-ray bursts from the neutron star system EXO 0748-676 using the NuSTAR observatory's FPMA and FPMB instruments in the 3-79 keV range. We identify Type I X-ray bursts driven…

High Energy Astrophysical Phenomena · Physics 2024-10-15 Nirpat Subba , Nishika Subba , Jyoti Paul , Pankaj Sharma , Monika Ghimiray

The X-ray light-curves of the recurring outbursts observed in low-mass X-ray binaries provide strong test beds for constraining (still) poorly understood disc-accretion processes. These light-curves act as a powerful diagnostic to probe the…

High Energy Astrophysical Phenomena · Physics 2018-07-25 B. E. Tetarenko , G. Dubus , J. -P. Lasota , C. O. Heinke , G. R. Sivakoff

The rotation rates of six weakly-magnetic neutron stars accreting in low-mass X-ray binaries have most likely been measured by Type I X-ray burst observations with RXTE. The nearly coherent oscillations detected during the few seconds of…

Astrophysics · Physics 2009-10-31 Andrew Cumming , Lars Bildsten

We report the detection of 5 Type-1 thermonuclear X-ray bursts and one burst-like event in the neutron star LMXB source, Cyg X-2 using X-ray data obtained with the Large Area X-ray Proportional Counter (LAXPC) instrument on board AstroSat.…

High Energy Astrophysical Phenomena · Physics 2020-09-09 Jincy Devasia , Gayathri Raman , Biswajit Paul

Long suspected to be due to unstable accretion events, the type II bursts exhibited by the Rapid Burster (RB, or MXB 1730-335) still lack an exhaustive explanation. Apart from type II bursts, the transient RB also shows the…

High Energy Astrophysical Phenomena · Physics 2013-10-29 T. Bagnoli , J. J. M. in 't Zand , A. Patruno , A. L. Watts

Type I X-ray bursts are the result of an unstable thermonuclear burning of accreting matter on the neutron star (NS) surface. The quick release of energetic X-ray photons during such bursts interacts with the surrounding accretion disk,…

High Energy Astrophysical Phenomena · Physics 2022-04-08 Guoying Zhao , Zhaosheng Li , Yuanyue Pan , Maurizio Falanga , Long Ji , Yupeng Chen , Shu Zhang

Type I outbursts in Be/X-ray binaries are usually associated with the eccentricity of the binary orbit. The neutron star accretes gas from the outer parts of the decretion disk around the Be star at each periastron passage. However, this…

High Energy Astrophysical Phenomena · Physics 2019-09-04 Alessia Franchini , Rebecca G. Martin

Nucleosynthesis in Type I X-ray bursts may involve up to several thousand nuclear processes. The majority of these processes have only been determined theoretically due to the lack of sufficient experimental information. Accurate reaction…

Astrophysics · Physics 2009-11-13 A. Parikh , J. Jose , C. Iliadis , F. Moreno , T. Rauscher

The intense radiation flux of Type I X-ray bursts is expected to interact with the accretion flow around neutron stars. High frequency quasiperiodic oscillations (kHz QPOs), observed at frequencies matching orbital frequencies at tens of…

High Energy Astrophysical Phenomena · Physics 2014-09-05 P. Peille , J-F. Olive , D. Barret

Nuclear burning and its dependence on the mass accretion rate are fundamental ingredients for describing the complicated observational phenomenology of neutron stars in binary systems. Motivated by high quality burst rate data emerging from…

High Energy Astrophysical Phenomena · Physics 2017-12-20 Yuri Cavecchi , Anna L. Watts , Duncan K. Galloway

We report the broadband timing and spectral properties of the neutron star low-mass X-ray binary Aql X-1 during the 2024 outburst with NICER, NuSTAR, and Swift observatories. We detected six thermonuclear X-ray bursts during the NICER and…

High Energy Astrophysical Phenomena · Physics 2025-04-25 Manoj Mandal , Sabyasachi Pal , G. K. Jaisawal , Anne Lohfink , Sachindra Naik , Jaiverdhan Chauhan

We determine that the sizes of bursts in mean-square current density in a reduced magnetohydrodynamic (RMHD)simulation follow power-law probability density function (PDF). The PDFs for burst durations and waiting time between bursts are…

Astrophysics · Physics 2009-10-31 N. W. Watkins , S. Oughton , M. P. Freeman

We report the discovery of burst oscillations at the spin frequency in ten thermonuclear bursts from the accreting millisecond X-ray pulsar (AMXP) IGR J17511-3057. The burst oscillation properties are, like those from the persistent AMXPs…

High Energy Astrophysical Phenomena · Physics 2015-05-19 D. Altamirano , A. Watts , M. Linares , C. B. Markwardt , T. Strohmayer , A. Patruno

Ultraluminous X-ray sources (ULXs) with luminosities lying between ~3x10^{39} - 2x10^{40} erg/s represent a contentious sample of objects as their brightness, together with a lack of unambiguous mass estimates for the vast majority of the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Matthew Middleton , Lucy Heil , Fabio Pintore , Dominic Walton , Timothy Roberts

Inhomogeneous temporal processes, like those appearing in human communications, neuron spike trains, and seismic signals, consist of high-activity bursty intervals alternating with long low-activity periods. In recent studies such bursty…

Physics and Society · Physics 2011-12-01 Márton Karsai , Kimmo Kaski , Albert-László Barabási , János Kertész

It has been shown that the observed temporal distribution of transient events in the cosmos can be used to constrain their rate density. Here we show that the peak flux--observation time relation takes the form of a power law that is…

Astrophysics · Physics 2010-11-11 E. Howell , D. Coward , R. Burman , D. Blair

We have discovered a triple-peaked X-ray burst from the low-mass X-ray binary (LMXB) 4U 1636-53 with the Rossi X-ray Timing Explorer (RXTE). This is the first triple-peaked burst reported from any LMXB using RXTE, and it is only the second…

High Energy Astrophysical Phenomena · Physics 2015-05-13 Guobao Zhang , Mariano Mendez , Diego Altamirano , Tomaso M. Belloni , Jeroen Homan