153 citations · 478 across the 14 of their papers we have counts for
15 papers
Marginal Role of the Electrostatic Instability in the GeV-scale Cascade Flux from 1ES 0229+200
Mahmoud Alawashra, Ievgen Vovk, Martin Pohl
Relativistic pair beams produced in the intergalactic medium (IGM) by TeV gamma rays from blazars are expected to generate a detectable GeV-scale electromagnetic cascade, yet this…
Stochastic re-acceleration and magnetic-field damping in Tycho's supernova remnant
A. Wilhelm, I. Telezhinsky, V. V. Dwarkadas +1
A number of studies suggest that shock acceleration with particle feedback and very efficient magnetic-field amplification combined with Alfvénic drift are needed to explain the ra…
Non-thermal emission from the reverse shock of the youngest galactic Supernova remnant G1.9+0.3
R. Brose, I. Sushch, M. Pohl +3
Context. The youngest Galactic supernova remnant G1.9+0.3 is an interesting target for next generation gamma-ray observatories. So far, the remnant is only detected in the radio an…
Multiband variability studies and novel broadband SED modeling of Mrk 501 in 2009
M. L. Ahnen, S. Ansoldi, L. A. Antonelli +290
We present an extensive study of the BL Lac object Mrk 501 based on a data set collected during the multi-instrument campaign spanning from 2009 March 15 to 2009 August 1 which inc…
Acceleration of cosmic rays by young core-collapse supernova remnants
I. Telezhinsky, V. V. Dwarkadas, M. Pohl
Context. Supernova remnants (SNRs) are thought to be the primary candidates for the sources of Galactic cosmic rays. According to the diffusive shock acceleration theory, SNR shock…
Time-Dependent Escape of Cosmic Rays from Supernova Remnants, and their Interaction with Dense Media
I. Telezhinsky, V. V. Dwarkadas, M. Pohl
Context. Supernova remnants (SNRs) are thought to be the main source of Galactic cosmic rays (CRs) up to the "knee" in CR spectrum. During the evolution of a SNR, the bulk of the C…
Veritas: Status c. 2009
T. C. Weekes, the VERITAS Collaboration
VERITAS is a ground-based gamma-ray observatory that uses the imaging atmospheric Cherenkov technique and operates in the very high-energy (VHE) region of the gamma- ray spectrum f…
H.E.S.S. Observations of PKS 2155-304
The H. E. S. S. Collaboration, :, F. Aharonian
The high-frequency peaked BL Lac PKS 2155-304 at redshift z=0.117 has been detected with high significance (~45 sigma) at energies greater than 160 GeV, using the H.E.S.S. stereosc…
The impact of thermal gas in AGN jets on the low-frequency emission
M. Siewert, M. Pohl, R. Schlickeiser
We study the effect of non-relativistic, thermal matter in the jets of active galaxies (AGN) on the low-frequency non-thermal emission and the variability thereof. In matter-domina…
Conversion of relativistic pair energy into radiation in the jets of active galactic nuclei
R. Schlickeiser, R. Vainio, M. Boettcher +3
It is generally accepted that relativistic jet outflows power the nonthermal emission from active galactic nuclei (AGN). The composition of these jets -- leptonic versus hadronic -…
Channeled blast wave behavior based on longitudinal instabilities
M. Pohl, I. Lerche, R. Schlickeiser
To address the important issue of how kinetic energy of collimated blast waves is converted into radiation, Pohl & Schlickeiser (2000) have recently investigated the relativistic t…
The Origin of Cosmic Rays and the Diffuse Galactic Gamma-Ray Emission
S. W. Digel, S. D. Hunter, I. V. Moskalenko +2
Cosmic-ray interactions with interstellar gas and photons produce diffuse gamma-ray emission. In this talk we will review the current understanding of this diffuse emission and its…
Excess GeV radiation and cosmic ray origin
I. Büsching, M. Pohl, R. Schlickeiser
Recent EGRET observations of the diffuse Galactic gamma-ray emission reveal a spectrum which is incompatible with the assumption that the cosmic ray spectra measured locally hold t…
Transrelativistic pair plasmas in AGN jets
M. Boettcher, M. Pohl, R. Schlickeiser
Models of relativistic jets filled with ultrarelativistic pair plasma are very successful in explaining the broadband radiation of -ray blazars. Assuming that the initial inject…
Leptonic origin of TeV gamma-rays from Supernova Remnants
M. Pohl
The lineless power-law emission observed by ASCA from the northeastern rim of the supernova remnant SN1006 has recently been interpreted as synchrotron radiation of electrons with…