Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL

We report on bursts from the Soft Gamma-Ray Repeater SGR 1806-20 detected with INTEGRAL in October 2003, during a period of moderate activity of the source. The spectral and temporal properties of 21 short bursts are consistent with those found in previous observations, even if these bursts are amon...

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Autores principales: Götz, D., Mereghetti, S., Mirabel, I.F., Hurley, K.
Formato: JOUR
Materias:
Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual: SGR 1806-20
Correlation methods
Data reduction
Galaxies
Gamma rays
Magnetization
Masks
Telescopes
Stars: individual SGR 1806-20
Astrophysics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00046361_v417_n3_pL45_Gotz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00046361_v417_n3_pL45_Gotz
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spelling todo:paper_00046361_v417_n3_pL45_Gotz2023-10-03T14:00:06Z Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL Götz, D. Mereghetti, S. Mirabel, I.F. Hurley, K. Gamma rays: bursts Gamma rays: observations Pulsars: general Stars: individual: SGR 1806-20 Correlation methods Data reduction Galaxies Gamma rays Magnetization Masks Telescopes Gamma rays: bursts Gamma rays: observations Pulsars: general Stars: individual SGR 1806-20 Astrophysics We report on bursts from the Soft Gamma-Ray Repeater SGR 1806-20 detected with INTEGRAL in October 2003, during a period of moderate activity of the source. The spectral and temporal properties of 21 short bursts are consistent with those found in previous observations, even if these bursts are among the faintest observed in the 15-200 keV range from this source. During some of the bursts a clear spectral evolution is visible. The data also show, for the first time, evidence for a hardness-intensity anti-correlation within SGR 1806-20 bursts. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v417_n3_pL45_Gotz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual: SGR 1806-20
Correlation methods
Data reduction
Galaxies
Gamma rays
Magnetization
Masks
Telescopes
Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual SGR 1806-20
Astrophysics
spellingShingle Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual: SGR 1806-20
Correlation methods
Data reduction
Galaxies
Gamma rays
Magnetization
Masks
Telescopes
Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual SGR 1806-20
Astrophysics
Götz, D.
Mereghetti, S.
Mirabel, I.F.
Hurley, K.
Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
topic_facet Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual: SGR 1806-20
Correlation methods
Data reduction
Galaxies
Gamma rays
Magnetization
Masks
Telescopes
Gamma rays: bursts
Gamma rays: observations
Pulsars: general
Stars: individual SGR 1806-20
Astrophysics
description We report on bursts from the Soft Gamma-Ray Repeater SGR 1806-20 detected with INTEGRAL in October 2003, during a period of moderate activity of the source. The spectral and temporal properties of 21 short bursts are consistent with those found in previous observations, even if these bursts are among the faintest observed in the 15-200 keV range from this source. During some of the bursts a clear spectral evolution is visible. The data also show, for the first time, evidence for a hardness-intensity anti-correlation within SGR 1806-20 bursts.
format JOUR
author Götz, D.
Mereghetti, S.
Mirabel, I.F.
Hurley, K.
author_facet Götz, D.
Mereghetti, S.
Mirabel, I.F.
Hurley, K.
author_sort Götz, D.
title Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
title_short Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
title_full Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
title_fullStr Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
title_full_unstemmed Spectral evolution of weak bursts from SGR 1806-20 observed with INTEGRAL
title_sort spectral evolution of weak bursts from sgr 1806-20 observed with integral
url http://hdl.handle.net/20.500.12110/paper_00046361_v417_n3_pL45_Gotz
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AT mereghettis spectralevolutionofweakburstsfromsgr180620observedwithintegral
AT mirabelif spectralevolutionofweakburstsfromsgr180620observedwithintegral
AT hurleyk spectralevolutionofweakburstsfromsgr180620observedwithintegral
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