Magnetars as persistent hard X-ray sources: INTEGRAL discovery of a hard tail in SGR 1900+14
arXiv:astro-ph/0602359 · doi:10.1051/0004-6361:20064870
Abstract
Using 2.5 Ms of data obtained by the INTEGRAL satellite in 2003-2004, we discovered persistent hard X-ray emission from the soft gamma-ray repeater SGR 1900+14. Its 20-100 keV spectrum is well described by a steep power law with photon index Gamma=3.1+/-0.5 and flux 1.5E-11 erg/cmsq/s. Contrary to SGR 1806-20, the only other soft gamma-ray repeater for which persistent emission above 20 keV was reported, SGR 1900+14 has been detected in the hard X-ray range while it was in a quiescent state (the last bursts from this source were observed in 2002). By comparing the broad band spectra (1-100 keV) of all the magnetars detected by INTEGRAL (the two SGRs and three anomalous X-ray pulsars) we find evidence for a different spectral behaviour of these two classes of sources.
5 pages, 2 figures, submitted to A&A Letters
References in corpus (32)
- ISGRI: the INTEGRAL Soft Gamma-Ray Imager
- Electrodynamics of Magnetars: Implications for the Persistent X-ray Emission and Spindown of the Soft Gamma Repeaters and Anomalous X-ray Pulsars
- An exceptionally bright flare from SGR1806-20 and the origins of short-duration gamma-ray bursts
- Gamma-Ray Observations of a Giant Flare from The Magnetar SGR 1806-20
- A giant, periodic flare from the soft gamma repeater SGR1900+14
- The INTEGRAL Science Data Centre (ISDC)
- Faint X-ray sources resolved in the ASCA Galactic plane survey and their contribution to the Galactic ridge X-ray emission
- Statistical properties of SGR 1900+14 bursts
- Discovery of hard non-thermal pulsed X-ray emission from the anomalous X-ray pulsar 1E 1841-045
- Discovery of a Radio Source following the 27 December 2004 Giant Flare from SGR 1806-20
- A Relativistic Particle Outburst From The Soft Gamma-Ray Repeater SGR1900+14
- High Energy Emission from Magnetars
- Evidence for a Sudden Magnetic Field Reconfiguration in SGR 1900+14
- The first giant flare from SGR 1806-20: observations with the INTEGRAL SPI Anti-Coincidence Shield
- The Discovery of an Embedded Cluster of High-Mass Stars Near SGR 1900+14
- The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy
- A Hard X-ray survey of the Galactic Center with INTEGRAL/IBIS. Catalog of sources
- INTEGRAL/IBIS survey of the Sagittarius Arm Tangent region: A source catalog
- A XMM-Newton View of the Soft Gamma-ray Repeater SGR 1806--20: Long Term Variability in the pre-Super Giant Flare Epoch
- INTEGRAL discovery of persistent hard X-ray emission from the Soft Gamma Ray Repeater SGR 1806-20
- An Unusual Burst from Soft Gamma Repeater SGR 1900+14: Comparisons with Giant Flares and Implications for the Magnetar Model
- Post-glitch variability in the Anomalous X-ray Pulsar 1RXS J170849.0-400910
- Konus catalog of SGR activity to 2000
- The broad-band spectrum of the persistent emission from SGR1806-20
- Chandra Observation of the Anomalous X-ray Pulsar 1E 1841-045
- An Extended Burst Tail from SGR 1900+14 with a Thermal X-ray Spectrum
- Constraints on the distance to SGR 1806-20 from HI absorption
- Broad band X-ray spectra of short bursts from SGR 1900+14
- Comparative study of the two large flares from SGR1900+14 with the BeppoSAX Gamma-Ray Burst Monitor
- Unveiling the Nature of the High Energy Source IGR J19140+0951
- Broad-band X-ray measurements of the black hole candidate XTE J1908+094
- Observation of the Anomalous X-Ray Pulsar 4U 0142+61
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- Magnetars
- The McGill Magnetar Catalog
- The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
- Magnetars: the physics behind observations
- Unifying the observational diversity of isolated neutron stars via magneto-thermal evolution models
- Magnetars: Properties, Origin and Evolution
- X-ray spectra from magnetar candidates. I. Monte Carlo simulations in the non-relativistic regime
- A Swift gaze into the 2006 March 29th burst forest of SGR 1900+14
- Magnetar outbursts: an observational review
- Resonant cyclotron scattering in magnetars' emission
- Resonant Cyclotron Scattering in Three Dimensions and the Quiescent Non-thermal X-ray Emission of Magnetars
- The Compact X-ray Source 1E 1547.0-5408 and the Radio Shell G327.24-0.13: A New Proposed Association between a Candidate Magnetar and a Candidate Supernova Remnant
- Conversion of Dark matter axions to photons in magnetospheres of neutron stars
- The first outburst of the new magnetar candidate SGR 0501+4516
- Broad-band study with Suzaku of the magnetar class
- Magnetar Broadband X-ray Spectra Correlated with Magnetic Fields: Suzaku Archive of SGRs and AXPs Combined with NuSTAR, Swift, and RXTE
- Scientific Prospects for Hard X-ray Polarimetry
- Magnetars: a short review and some sparse considerations
- The first XMM-Newton observations of the Soft Gamma-ray Repeater SGR 1900+14
- X-ray spectra from magnetar candidates. II Resonant cross sections for electron-photon scattering in the relativistic regime
- From outburst to quiescence: the decay of the transient Anomalous X-ray Pulsar XTE J1810-197
- X-Ray Polarimetry with the Polarization Spectroscopic Telescope Array (PolSTAR)
- Resonant Inverse Compton Scattering Spectra from Highly-magnetized Neutron Stars
- Constraining Axion-Like-Particles with Hard X-ray Emission from Magnetars
- Accreting magnetars: a new type of high-mass X-ray binaries?
- Topology of magnetars external field. I. Axially symmetric fields
- Electrodynamics of Magnetars III: Pair Creation Processes in an Ultrastrong Magnetic Field and Particle Heating in a Dynamic Magnetosphere
- Multi-instrument X-ray monitoring of the January 2009 outburst from the recurrent magnetar candidate 1E 1547.0-5408
- Search for gamma-ray emission from magnetars with the Fermi Large Area Telescope
- Suzaku Discovery of a Hard X-Ray Tail in the Persistent Spectra from the Magnetar 1E 1547.0-5408 during its 2009 Activity
- XMM-Newton observations of CXOU J010043.1-721134: the first deep look at the soft X-ray emission of a magnetar
- On the X-ray Spectra of Anomalous X-ray Pulsars and Soft Gamma Repeaters
- SGR 1806-20 about two years after the giant flare: Suzaku, XMM-Newton and INTEGRAL observations
- Pulsars and magnetars
- Exceptional flaring activity of the anomalous X-ray pulsar 1E 1547.0-5408
- Pressure of Degenerate and Relativistic electrons in a superhigh magnetic field
- Temporal and spectral evolution in X- and gamma-rays of magnetar 1E 1547.0-5408 since its October 2008 outburst: the discovery of a transient hard pulsed component after its January 2009 outburst
- The Sleeping Monster: NuSTAR observations of SGR 1806-20, 11 years after the Giant Flare
- Spectral modelling of the high energy emission of the magnetar 4U 0142+614
- INTEGRAL: science highlights and future prospects
- Adaptive optics near-infrared observations of magnetars
- Magnetars and Axion-like Particles: Probes with the Hard X-ray Spectrum
- Low-magnetic-field magnetars
- Cooling Rates for Relativistic Electrons Undergoing Compton Scattering in Strong Magnetic Fields
- Compton scattering in strong magnetic fields: Spin-dependent influences at the cyclotron resonance
- X-ray emission from isolated neutron stars
- Axions: From Magnetars and Neutron Star Mergers to Beam Dumps and BECs
- Five years of SGR 1900+14 observations with BeppoSAX
- Opacities for Photon Splitting and Pair Creation in Neutron Star Magnetospheres
- Uniting the Quiescent Emission and Burst Spectra of Magnetar Candidates
- Long term hard X-ray variability of the anomalous X-ray pulsar 1RXS J170849.0-400910 discovered with INTEGRAL
- XMM-Newton observations of Soft Gamma-ray Repeaters
- The 2022 high-energy outburst and radio disappearing act of the magnetar 1E 1547.0-5408
- Pair Plasma in Super-QED Magnetic Fields and the Hard X-ray/Optical Emission of Magnetars
- On the nature of some SGRs and AXPs as rotation-powered neutron stars
- Magnetic Pair Creation Transparency in Gamma-Ray Pulsars
- Unveiling Soft Gamma-Ray Repeaters with INTEGRAL
- Universal detection of high-temperature emission in X-ray Isolated Neutron Stars
- The INTEGRAL view of the pulsating hard X-ray sky: from accreting and transitional millisecond pulsars to rotation-powered pulsars and magnetars
- High energy gamma-ray emission from compact galactic sources in the context of observations with the next generation Cherenkov Telescope Arrays
- Axion Constraints from Quiescent Soft Gamma-ray Emission from Magnetars
- Hard X-ray/Soft gamma-ray experiments and missions: overview and prospects
- Long Term Radiative Behavior of SGR 1900+14
- High-Energy Photon Opacity in the Twisted Magnetospheres of Magnetars
- Relativistic Fireball Reprise: Radio Suppression at the Onset of Short Magnetar Bursts
- Temporal and spectral X-ray properties of magnetar SGR 1900+14 derived from observations with NuSTAR and XMM-Newton
- Hard X-ray emission cutoff in anomalous X-ray pulsar 4U 0142+61 detected by INTEGRAL
- Probing the Nature of Short Swift Bursts via Deep INTEGRAL Monitoring of GRB 050925
- Infrared identification of 2XMM J191043.4+091629.4
- The infrared counterpart and proper motion of magnetar SGR0501+4516
- Concise Spectrotemporal Studies of Magnetar SGR J1935+2154 Bursts
- Wind braking of magnetars: to understand magnetar's multiwave radiation properties
- Long term spectral variability in the soft gamma ray repeater SGR 1900+14
- Long term spectral variability in the Soft Gamma-ray Repeater SGR 1900+14
- Hard X-ray Quiescent Emission in Magnetars via Resonant Compton Upscattering
- Ten years of INTEGRAL observations of the hard X-ray emission from SGR 1900+14
- Magnetar giant flare high-energy emission
- Influence of Magnetic Field Decay on Electron Capture in Magnetars
- Laue gamma-ray lenses for space astrophysics:status and prospects
- Resonant Inverse Compton Scattering and Hard X-ray Emission in Magnetar Magnetospheres
- About the observational check of the mechanism of gamma radiation in Soft Gamma Repeaters (SGR)