A bright γ-ray flare from the blazar B2 1215+30 detected by VERITAS and Fermi-LAT

Floriana Zefi; Reshmi Mukherjee; Stephen Fegan; Berrie Giebels; Deirdre Horan

A bright γ-ray flare from the blazar B2 1215+30 detected by VERITAS and Fermi-LAT

Floriana Zefi
, Reshmi Mukherjee
, Stephen Fegan
, Berrie Giebels
, Deirdre Horan

Barnard College

Research output: Contribution to journal › Conference article › peer-review

Abstract

We report on evidence of simultaneous γ-ray flaring from the BL Lac source B2 1215+30, detected by VERITAS (E > 100 GeV) and the Fermi Large Area Telescope (100 MeV < E < 100 GeV). The source was observed by VERITAS during an exceptional flaring state in 2014 February 08. Investigations of flux variability in the energy range covered by Fermi-LAT, show that the GeV flare occurred contemporaneously with the TeV flare. From the variability time scale we constrain the size of the emission region and derive a limit on the Doppler factor of the relativistic jet of B2 1215+30.

Original language	English
Article number	765
Journal	Proceedings of Science
Volume	30-July-2015
Publication status	Published - 1 Jan 2015
Event	34th International Cosmic Ray Conference, ICRC 2015 - The Hague, Netherlands Duration: 30 Jul 2015 → 6 Aug 2015

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@article{60f207eeabd342a3aa7e4d690b95fe46,

title = "A bright γ-ray flare from the blazar B2 1215+30 detected by VERITAS and Fermi-LAT",

abstract = "We report on evidence of simultaneous γ-ray flaring from the BL Lac source B2 1215+30, detected by VERITAS (E > 100 GeV) and the Fermi Large Area Telescope (100 MeV < E < 100 GeV). The source was observed by VERITAS during an exceptional flaring state in 2014 February 08. Investigations of flux variability in the energy range covered by Fermi-LAT, show that the GeV flare occurred contemporaneously with the TeV flare. From the variability time scale we constrain the size of the emission region and derive a limit on the Doppler factor of the relativistic jet of B2 1215+30.",

author = "Floriana Zefi and Reshmi Mukherjee and Stephen Fegan and Berrie Giebels and Deirdre Horan",

year = "2015",

month = jan,

day = "1",

language = "English",

volume = "30-July-2015",

journal = "Proceedings of Science",

issn = "1824-8039",

note = "34th International Cosmic Ray Conference, ICRC 2015 ; Conference date: 30-07-2015 Through 06-08-2015",

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TY - JOUR

T1 - A bright γ-ray flare from the blazar B2 1215+30 detected by VERITAS and Fermi-LAT

AU - Zefi, Floriana

AU - Mukherjee, Reshmi

AU - Fegan, Stephen

AU - Giebels, Berrie

AU - Horan, Deirdre

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We report on evidence of simultaneous γ-ray flaring from the BL Lac source B2 1215+30, detected by VERITAS (E > 100 GeV) and the Fermi Large Area Telescope (100 MeV < E < 100 GeV). The source was observed by VERITAS during an exceptional flaring state in 2014 February 08. Investigations of flux variability in the energy range covered by Fermi-LAT, show that the GeV flare occurred contemporaneously with the TeV flare. From the variability time scale we constrain the size of the emission region and derive a limit on the Doppler factor of the relativistic jet of B2 1215+30.

AB - We report on evidence of simultaneous γ-ray flaring from the BL Lac source B2 1215+30, detected by VERITAS (E > 100 GeV) and the Fermi Large Area Telescope (100 MeV < E < 100 GeV). The source was observed by VERITAS during an exceptional flaring state in 2014 February 08. Investigations of flux variability in the energy range covered by Fermi-LAT, show that the GeV flare occurred contemporaneously with the TeV flare. From the variability time scale we constrain the size of the emission region and derive a limit on the Doppler factor of the relativistic jet of B2 1215+30.

M3 - Conference article

AN - SCOPUS:84988710983

SN - 1824-8039

VL - 30-July-2015

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 765

T2 - 34th International Cosmic Ray Conference, ICRC 2015

Y2 - 30 July 2015 through 6 August 2015

ER -

A bright γ-ray flare from the blazar B2 1215+30 detected by VERITAS and Fermi-LAT

Abstract

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