Multiwavelength study of the TeV blazar Mrk 421 during a giant flare

The nearby (z = 0.031) TeV blazar Mrk 421 was reported to be in a high state of flux activity since November, 2009. The researchers aim to investigate possible changes in the physical parameters of Mrk 421 during its high state of activity using multiwavelength data. The researchers have observed th...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2012-05, Vol.541, p.1-1
Main Authors: Shukla, A, Chitnis, V R, Vishwanath, P R, Acharya, B S, Anupama, G C, Bhattacharjee, P, Britto, R J, Prabhu, T P, Saha, L, Singh, B B
Format: Article
Language:English
Subjects:
Arrays
Astronomy
Band spectra
Bands
Blazars
Flares
Spectral energy distribution
X-rays
Online Access:Get full text
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Summary:The nearby (z = 0.031) TeV blazar Mrk 421 was reported to be in a high state of flux activity since November, 2009. The researchers aim to investigate possible changes in the physical parameters of Mrk 421 during its high state of activity using multiwavelength data. The researchers have observed this source in the bright state using the High Altitude GAmma Ray (HAGAR) telescope array at energies above 250 GeV during February 13-19, 2010. Optical, X-ray and ...-ray archival data were also used to obtain the spectral energy distribution and light curves. They present the spectral energy distributions during this flaring episode and investigate the correlation of the variability in X-ray and ...-ray bands. The multiwavelength study suggests that the flare detected during February 16 and 17, 2010 may have been caused by a passing shock in the jet.(ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0004-6361
1432-0746