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          Institute: MPI für Kernphysik     Collection: High-Energy Astrophysics     Display Documents



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ID: 51224.0, MPI für Kernphysik / High-Energy Astrophysics
The SED of the TeV BLLac 1ES 1426+428 after correction for the TeV–IR absorption
Authors:Costamante, L.; Aharonian, F.A.; Ghisellini, G.; Horns, D.
Language:English
Date of Publication (YYYY-MM-DD):2003-10
Title of Journal:New Astronomy Reviews
Volume (in Journal):47
Issue / Number:6-7
Title of Issue:The physics of relativistic jets in the CHANDRA and XMM era
Start Page:677
End Page:680
Name of Conference/Meeting:The Physics of Relativistic Jets in the CHANDRA and XMM Era
Place of Conference/Meeting:Bologna
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2002-09-23
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2002-09-27
Copyright:Elsevier B.V
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The recent HEGRA detection and spectrum of 1ES 1426+428 at TeV energies, once corrected for absorption using present estimates of the diffuse extragalactic IR background, suggest that the high energy peak of the Spectral Energy Distribution (SED) could be much higher than the synchrotron one (Lc/Ls>10), and lie at energies above 8–10 TeV. To see if such an SED could be accounted for, we have applied a `finite injection time' SSC model, and present here some preliminary results. Within this model, we found the need of an external (`ambient') contribution to the energy density of seed photons, in order to account for both the high Compton dominance and the hard spectrum.
External Publication Status:published
Document Type:Conference-Paper
Affiliations:MPI für Kernphysik/Group H. J. Völk/High Energy Astrophysics (F. Aharonian)
External Affiliations:Osservatorio Astronomico di Brera, Via Bianchi 42, I-23807, Merate, Italy
Identifiers:URL:http://de.arxiv.org/abs/astro-ph/0301211 [Preprint version of this paper available on arXiv]
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