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Multi-frequency, multi-epoch study of MrK 501: hints for a two-component nature of the emission

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dc.contributor.author Shukla, A
dc.contributor.author Chitnis, V. R
dc.contributor.author Singh, B. B
dc.contributor.author Acharya, B. S
dc.contributor.author Anupama, G. C
dc.contributor.author Bhattacharjee, P
dc.contributor.author Britto, R. J
dc.contributor.author Mannheim, K
dc.contributor.author Prabhu, T. P
dc.contributor.author Saha, L
dc.contributor.author Vishwanath, P. R
dc.date.accessioned 2020-11-10T01:50:48Z
dc.date.available 2020-11-10T01:50:48Z
dc.date.issued 2015-01-01
dc.identifier.citation The Astrophysical Journal, Vol. 798, No. 1, 2 en_US
dc.identifier.issn 1538-4357
dc.identifier.uri http://prints.iiap.res.in/handle/2248/6697
dc.description Open Access © The American Astronomical Society http://dx.doi.org/10.1088/0004-637X/798/1/2 en_US
dc.description.abstract Since the detection of very high energy (VHE) γ -rays from Mrk 501, its broadband emission of radiation was mostly and quite effectively modeled using the one zone emission scenario. However, broadband spectral and flux variability studies enabled by the multi-wavelength campaigns carried out during the recent years have revealed the rather complex behavior of Mrk 501. The observed emission fromMrk 501 could be due to a complex superposition of multiple emission zones.Moreover, new evidence of detection of very hard intrinsic γ -ray spectra obtained from Fermi-LAT observations has challenged the theories about the origin of VHE γ -rays. Our studies based on Fermi- LAT data indicate the existence of two separate components in the spectrum, one for low-energy γ rays and the other for high-energy γ -rays. Using multi-waveband data from several ground- and space-based instruments, in addition to HAGAR data, the spectral energy distribution of Mrk 501 is obtained for various flux states observed during 2011. In the present work, this observed broadband spectral energy distribution is reproduced with a leptonic, multi-zone synchrotron self-Compton (SSC) model. en_US
dc.language.iso en en_US
dc.publisher IOP Publishing en_US
dc.subject BL Lacertae objects: individual (Mrk 501) en_US
dc.subject galaxies: jets en_US
dc.title Multi-frequency, multi-epoch study of MrK 501: hints for a two-component nature of the emission en_US
dc.type Article en_US


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