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Extragalactic Background Light and Gamma-Ray Attenuation
Joel R. Primack, Alberto Dominguez, Rudy C. Gilmore +1
Data from (non-) attenuation of gamma rays from active galactic nuclei (AGN) and gamma ray bursts (GRBs) give upper limits on the extragalactic background light (EBL) from the UV t…
Mrk 421 active state in 2008: the MAGIC view, simultaneous multi-wavelength observations and SSC model constrained
J. Aleksic, E. A. Alvarez, L. A. Antonelli +150
Context: The blazar Markarian 421 is one of the brightest TeV gamma-ray sources of the northern sky. From December 2007 until June 2008 it was intensively observed in the very high…
Semi-analytic modeling of the EBL and consequences for extragalactic gamma-ray spectra
R. C. Gilmore, R. S. Somerville, J. R. Primack +1
Attenuation of high-energy gamma rays by pair-production with UV, optical and IR extragalactic background light (EBL) photons provides a link between the history of galaxy formatio…
Galaxy Properties from the Ultra-violet to the Far-Infrared: Lambda-CDM models confront observations
R. S. Somerville, R. C. Gilmore, J. R. Primack +1
We combine a semi-analytic model of galaxy formation with simple analytic recipes describing the absorption and re-emission of starlight by dust in the interstellar medium of galax…
MAGIC discovery of VHE Emission from the FSRQ PKS 1222+21
J. Aleksić, L. Antonelli, P. Antoranz +146
Very High Energy (VHE) gamma-ray emission from the flat spectrum radio quasar (FSRQ) PKS 1222+21 (4C 21.35, z=0.432) was detected with the MAGIC Cherenkov telescopes during a short…