Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole

G. Trap; A. Goldwurm; R. Terrier; K. Dodds-Eden; S. Gillessen; R. Genzel; E. Pantin; P. O. Lagage; P. Ferrando; G. Bélanger; D. Porquet; N. Grosso; F. Yusef-Zadeh; F. Melia

doi:10.1016/j.asr.2009.09.025

Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole

G. Trap, A. Goldwurm, R. Terrier, K. Dodds-Eden, S. Gillessen, R. Genzel, E. Pantin, P. O. Lagage, P. Ferrando, G. Bélanger, D. Porquet, N. Grosso, F. Yusef-Zadeh, F. Melia

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Sagittarius A ^{{black star}} (Sgr A ^{{black star}} ) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007. Herein, we report the detection of a bright flare from the vicinity of the horizon, observed simultaneously in X-rays (XMM-Newton/EPIC) and near infrared (VLT/NACO) on April 4 th for 1-2 h. For the first time, such an event also benefitted from a soft γ-rays (INTEGRAL/ISGRI) and mid infrared (VLT/VISIR) coverage, which enabled us to derive upper limits at both ends of the flare spectral energy distribution (SED). We discuss the physical implications of the contemporaneous light curves as well as the SED, in terms of synchrotron, synchrotron self-Compton and external Compton emission processes.

Original language	English (US)
Pages (from-to)	507-520
Number of pages	14
Journal	Advances in Space Research
Volume	45
Issue number	4
DOIs	https://doi.org/10.1016/j.asr.2009.09.025
State	Published - Feb 15 2010

Keywords

Black hole physics
Galaxy: center
Gamma rays: observations
Infrared: general
Radiation mechanisms: non-thermal
X-rays: general

ASJC Scopus subject areas

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/j.asr.2009.09.025

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Trap, G., Goldwurm, A., Terrier, R., Dodds-Eden, K., Gillessen, S., Genzel, R., Pantin, E., Lagage, P. O., Ferrando, P., Bélanger, G., Porquet, D., Grosso, N., Yusef-Zadeh, F., & Melia, F. (2010). Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole. Advances in Space Research, 45(4), 507-520. https://doi.org/10.1016/j.asr.2009.09.025

Trap, G, Goldwurm, A, Terrier, R, Dodds-Eden, K, Gillessen, S, Genzel, R, Pantin, E, Lagage, PO, Ferrando, P, Bélanger, G, Porquet, D, Grosso, N, Yusef-Zadeh, F & Melia, F 2010, 'Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole', Advances in Space Research, vol. 45, no. 4, pp. 507-520. https://doi.org/10.1016/j.asr.2009.09.025

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title = "Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole",

abstract = " Sagittarius A {black star} (Sgr A {black star} ) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007. Herein, we report the detection of a bright flare from the vicinity of the horizon, observed simultaneously in X-rays (XMM-Newton/EPIC) and near infrared (VLT/NACO) on April 4 th for 1-2 h. For the first time, such an event also benefitted from a soft γ-rays (INTEGRAL/ISGRI) and mid infrared (VLT/VISIR) coverage, which enabled us to derive upper limits at both ends of the flare spectral energy distribution (SED). We discuss the physical implications of the contemporaneous light curves as well as the SED, in terms of synchrotron, synchrotron self-Compton and external Compton emission processes.",

keywords = "Black hole physics, Galaxy: center, Gamma rays: observations, Infrared: general, Radiation mechanisms: non-thermal, X-rays: general",

author = "G. Trap and A. Goldwurm and R. Terrier and K. Dodds-Eden and S. Gillessen and R. Genzel and E. Pantin and Lagage, {P. O.} and P. Ferrando and G. B{\'e}langer and D. Porquet and N. Grosso and F. Yusef-Zadeh and F. Melia",

note = "Funding Information: Part of this work has been funded by the French Agence Nationale pour la Recherche through Grant ANR-06-JCJC-0047 . At Arizona, this work was also supported by NASA grants NNX08AX33G and NNX08AX34G . Funding Information: INTEGRAL is an ESA project with instruments and science data center funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, and Spain), the Czech Republic, and Poland, and with the participation of Russia and the US. The XMM-Newton project is an ESA Science Mission with instruments and contributions directly funded by ESA Member States and the USA (NASA).",

year = "2010",

month = feb,

day = "15",

doi = "10.1016/j.asr.2009.09.025",

language = "English (US)",

volume = "45",

pages = "507--520",

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T1 - Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole

AU - Trap, G.

AU - Goldwurm, A.

AU - Terrier, R.

AU - Dodds-Eden, K.

AU - Gillessen, S.

AU - Genzel, R.

AU - Pantin, E.

AU - Lagage, P. O.

AU - Ferrando, P.

AU - Bélanger, G.

AU - Porquet, D.

AU - Grosso, N.

AU - Yusef-Zadeh, F.

AU - Melia, F.

N1 - Funding Information: Part of this work has been funded by the French Agence Nationale pour la Recherche through Grant ANR-06-JCJC-0047 . At Arizona, this work was also supported by NASA grants NNX08AX33G and NNX08AX34G . Funding Information: INTEGRAL is an ESA project with instruments and science data center funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, and Spain), the Czech Republic, and Poland, and with the participation of Russia and the US. The XMM-Newton project is an ESA Science Mission with instruments and contributions directly funded by ESA Member States and the USA (NASA).

PY - 2010/2/15

Y1 - 2010/2/15

N2 - Sagittarius A {black star} (Sgr A {black star} ) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007. Herein, we report the detection of a bright flare from the vicinity of the horizon, observed simultaneously in X-rays (XMM-Newton/EPIC) and near infrared (VLT/NACO) on April 4 th for 1-2 h. For the first time, such an event also benefitted from a soft γ-rays (INTEGRAL/ISGRI) and mid infrared (VLT/VISIR) coverage, which enabled us to derive upper limits at both ends of the flare spectral energy distribution (SED). We discuss the physical implications of the contemporaneous light curves as well as the SED, in terms of synchrotron, synchrotron self-Compton and external Compton emission processes.

AB - Sagittarius A {black star} (Sgr A {black star} ) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007. Herein, we report the detection of a bright flare from the vicinity of the horizon, observed simultaneously in X-rays (XMM-Newton/EPIC) and near infrared (VLT/NACO) on April 4 th for 1-2 h. For the first time, such an event also benefitted from a soft γ-rays (INTEGRAL/ISGRI) and mid infrared (VLT/VISIR) coverage, which enabled us to derive upper limits at both ends of the flare spectral energy distribution (SED). We discuss the physical implications of the contemporaneous light curves as well as the SED, in terms of synchrotron, synchrotron self-Compton and external Compton emission processes.

KW - Black hole physics

KW - Galaxy: center

KW - Gamma rays: observations

KW - Infrared: general

KW - Radiation mechanisms: non-thermal

KW - X-rays: general

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U2 - 10.1016/j.asr.2009.09.025

DO - 10.1016/j.asr.2009.09.025

M3 - Article

AN - SCOPUS:75049083034

SN - 0273-1177

VL - 45

SP - 507

EP - 520

JO - Advances in Space Research

JF - Advances in Space Research

IS - 4

ER -

Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole

Abstract

Keywords

ASJC Scopus subject areas

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