The discovery of γ-ray emission from the blazar RGBJ0710+591

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The high-frequency-peaked BL Lacertae object RGBJ0710+591 was observed in the very high-energy (VHE; E > 100GeV) wave band by the VERITAS array of atmospheric Cherenkov telescopes. The observations, taken between 2008 December and 2009 March and totaling 22.1 hr, yield the discovery of VHE ga...

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Autor principal: Acciari, V.A.
Formato: JOUR
Materias:
Gamma rays: galaxies
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_20418205_v715_n1PART2_pL49_Acciari
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_20418205_v715_n1PART2_pL49_Acciari
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spelling todo:paper_20418205_v715_n1PART2_pL49_Acciari2023-10-03T16:37:59Z The discovery of γ-ray emission from the blazar RGBJ0710+591 Acciari, V.A. Gamma rays: galaxies The high-frequency-peaked BL Lacertae object RGBJ0710+591 was observed in the very high-energy (VHE; E > 100GeV) wave band by the VERITAS array of atmospheric Cherenkov telescopes. The observations, taken between 2008 December and 2009 March and totaling 22.1 hr, yield the discovery of VHE gamma rays from the source. RGBJ0710+591 is detected at a statistical significance of 5.5 standard deviations (5.5σ) above the background, corresponding to an integral flux of (3.9 ± 0.8) × 10 -12 cm -2 s -1 (3% of the Crab Nebula's flux) above 300GeV. The observed spectrum can be fit by a power law from 0.31 to 4.6TeV with a photon spectral index of 2.69 ± 0.26 stat ± 0.20 sys . These data are complemented by contemporaneous multiwavelength data from the Fermi Large Area Telescope, the Swift X-ray Telescope, the Swift Ultra-Violet and Optical Telescope, and the Michigan-Dartmouth-MIT observatory. Modeling the broadband spectral energy distribution (SED) with an equilibrium synchrotron self-Compton model yields a good statistical fit to the data. The addition of an external-Compton component to the model does not improve the fit nor brings the system closer to equipartition. The combined Fermi and VERITAS data constrain the properties of the high-energy emission component of the source over 4 orders of magnitude and give measurements of the rising and falling sections of the SED. © 2010 The American Astronomical Society. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_20418205_v715_n1PART2_pL49_Acciari
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: galaxies
spellingShingle Gamma rays: galaxies
Acciari, V.A.
The discovery of γ-ray emission from the blazar RGBJ0710+591
topic_facet Gamma rays: galaxies
description The high-frequency-peaked BL Lacertae object RGBJ0710+591 was observed in the very high-energy (VHE; E > 100GeV) wave band by the VERITAS array of atmospheric Cherenkov telescopes. The observations, taken between 2008 December and 2009 March and totaling 22.1 hr, yield the discovery of VHE gamma rays from the source. RGBJ0710+591 is detected at a statistical significance of 5.5 standard deviations (5.5σ) above the background, corresponding to an integral flux of (3.9 ± 0.8) × 10 -12 cm -2 s -1 (3% of the Crab Nebula's flux) above 300GeV. The observed spectrum can be fit by a power law from 0.31 to 4.6TeV with a photon spectral index of 2.69 ± 0.26 stat ± 0.20 sys . These data are complemented by contemporaneous multiwavelength data from the Fermi Large Area Telescope, the Swift X-ray Telescope, the Swift Ultra-Violet and Optical Telescope, and the Michigan-Dartmouth-MIT observatory. Modeling the broadband spectral energy distribution (SED) with an equilibrium synchrotron self-Compton model yields a good statistical fit to the data. The addition of an external-Compton component to the model does not improve the fit nor brings the system closer to equipartition. The combined Fermi and VERITAS data constrain the properties of the high-energy emission component of the source over 4 orders of magnitude and give measurements of the rising and falling sections of the SED. © 2010 The American Astronomical Society. All rights reserved.
format JOUR
author Acciari, V.A.
author_facet Acciari, V.A.
author_sort Acciari, V.A.
title The discovery of γ-ray emission from the blazar RGBJ0710+591
title_short The discovery of γ-ray emission from the blazar RGBJ0710+591
title_full The discovery of γ-ray emission from the blazar RGBJ0710+591
title_fullStr The discovery of γ-ray emission from the blazar RGBJ0710+591
title_full_unstemmed The discovery of γ-ray emission from the blazar RGBJ0710+591
title_sort discovery of γ-ray emission from the blazar rgbj0710+591
url http://hdl.handle.net/20.500.12110/paper_20418205_v715_n1PART2_pL49_Acciari
work_keys_str_mv AT acciariva thediscoveryofgrayemissionfromtheblazarrgbj0710591
AT acciariva discoveryofgrayemissionfromtheblazarrgbj0710591
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