The short bursts in SGR 1806-20, 1E 1048-5937 and SGR 0501+4516
arXiv:1403.6244 · doi:10.1086/680484
Abstract
We analyzed temporal and spectral properties, focusing on the short bursts, for three anomalous X-ray pulsars (AXPs) and soft gamma repeaters (SGRs), including SGR 1806-20, 1E 1048-5937 and SGR 0501+4516. Using the data from XMM-Newton, we located the short bursts by Bayesian blocks algorithm. The short bursts' duration distributions for three sources were fitted by two lognormal functions. The spectra of shorter bursts () and longer bursts () can be well fitted in two blackbody components model or optically thin thermal bremsstrahlung model for SGR 0501+4516. We also found that there is a positive correlation between the burst luminosity and the persistent luminosity with a power law index . The energy ratio of this persistent emission to the time averaged short bursts is in the range of , being comparable to the case in Type I X-ray burst.
arXiv commentAccepted by PASP
References in corpus (54)
- The McGill Magnetar Catalog
- Thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer
- The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
- Studies in Astronomical Time Series Analysis. VI. Bayesian Block Representations
- Bayesian Blocks, A New Method to Analyze Structure in Photon Counting Data
- A Debris Disk Around An Isolated Young Neutron Star
- An Accretion Model for Anomalous X-Ray Pulsars
- Untwisting magnetospheres of neutron stars
- On the relativistic magnetic reconnection
- NuSTAR discovery of a 3.76-second transient magnetar near Sagittarius A*
- A variable absorption feature in the X-ray spectrum of a magnetar
- Solid Quark Stars?
- A unified model of the magnetar and radio pulsar bursting phenomenology
- Statistical properties of SGR 1900+14 bursts
- Supernova remnant energetics and magnetars: no evidence in favour of millisecond proto-neutron stars
- A new low magnetic field magnetar: the 2011 outburst of Swift J1822.3-1606
- Statistical properties of SGR 1806-20 bursts
- An Anti-Glitch in a Magnetar
- A downward revision to the distance of the 1806-20 cluster and associated magnetar from Gemini near-Infrared spectroscopy
- The Prelude to and Aftermath of the Giant Flare of 2004 December 27: Persistent and Pulsed X-ray Properties of SGR 1806-20 from 1993 to 2005
- The outburst decay of the low magnetic field magnetar SGR 0418+5729
- A Swift gaze into the 2006 March 29th burst forest of SGR 1900+14
- Distances to Anomalous X-ray Pulsars using Red Clump Stars
- The first outburst of the new magnetar candidate SGR 0501+4516
- New Evidence for Proton Cyclotron Resonance in a Magnetar Strength Field from SGR 1806-20
- Temporal and Spectral Characteristics of Short Bursts from the Soft Gamma Repeaters 1806-20 and 1900+14
- A XMM-Newton View of the Soft Gamma-ray Repeater SGR 1806--20: Long Term Variability in the pre-Super Giant Flare Epoch
- X-ray Bursts from the Transient Magnetar Candidate XTE J1810-197
- SGRs and AXPs as rotation powered massive white dwarfs
- RXTE Monitoring of the Anomalous X-ray Pulsar 1E 1048.1-5937: Long-Term Variability and the 2007 March Event
- 3XMM J185246.6+003317: another low magnetic field magnetar
- Three XMM-Newton observations of the Anomalous X-ray Pulsar 1E 1048.1-5937: long term variations in spectrum and pulsed fraction
- Radio Spectrum and Distance of the SNR HB9
- From outburst to quiescence: the decay of the transient Anomalous X-ray Pulsar XTE J1810-197
- X-ray and Near-IR Variability of the Anomalous X-ray Pulsar 1E 1048.1-5937: From Quiescence Back to Activity
- The superflares of soft Gamma-ray repeatres: giant quakes in solid quark stars?
- Quakes in Solid Quark Stars
- Time-resolved X-ray spectral modeling of an intermediate burst from SGR1900+14 observed by HETE-2/FREGATE and WXM
- Two types of glitches in a solid quark star model
- Two years of INTEGRAL monitoring of the Soft Gamma-Ray Repeater SGR 1806-20: from quiescence to frenzy
- Discovery of the transient magnetar 3XMM J185246.6+003317 near supernova remnant Kesteven 79 with XMM-Newton
- A Comprehensive Study of Short Bursts from SGR 1806-20 and SGR 1900+14 Detected by HETE-2
- Is SGR 1900+14 a Magnetar?
- Broad band X-ray spectra of short bursts from SGR 1900+14
- The X-ray Spectrum of Soft Gamma Repeater 1806-20
- Spatial, Temporal and Spectral Properties of X-ray Emission from the Magnetar SGR~0501+4516
- Quiescent state and outburst evolution of SGR 0501+4516
- Spectral features in isolated neutron stars induced by inhomogeneous surface temperatures
- Spectral Evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
- Suzaku Observations of SGR 1900+14 and SGR 1806-20
- Detailed Investigations of the Dimmest Bursts from Two Magnetars, SGR J0501+4516 and SGR J1550-5418
- Spectral Comparison of Weak Short Bursts to the Persistent X-rays from the Magnetar 1E 1547.0-5408 in its 2009 Outburst
- The Suzaku Discovery of A Hard Power-Law Component in the Spectra of Short Bursts from SGR 0501+4516
- On the X-ray emission mechanisms of the persistent source and very low-fluence bursts of SGR J0501+4516