133 citations · 484 across the 21 of their papers we have counts for
12 papers · 1 filter
Radio emission of highly inclined cosmic ray air showers measured with LOPES
Jelena Petrovic LOPES collaboration
LOPES-10 (the first phase of LOPES, consisting of 10 antennas) detected a significant number of cosmic ray air showers with a zenith angle larger than 50, and many of the…
Degenerate sterile neutrino dark matter in the cores of galaxies
Faustin Munyaneza, Peter L. Biermann
We study the distribution of fermionic dark matter at the center of galaxies using NFW, Moore and isothermal density profiles and show that dark matter becomes degenerate for parti…
Fluctuations in the EAS radio signal derived with improved Monte Carlo simulations based on CORSIKA
Tim Huege
Cosmic ray air showers are known to emit pulsed radio emission which can be understood as coherent geosynchrotron radiation arising from the deflection of electron-positron pairs i…
Binary black holes and tori in AGN I. Ejection of stars and merging of the binary
Christian Zier, Peter L. Biermann
Most galaxies have central massive black holes (BH), and merge with others during their evolution, as strongly suggested by recent observations. Consequently a black hole binary (B…
The jet-disk symbiosis model for Gamma Ray Bursts: cosmic ray and neutrino background contribution
G. Pugliese, H. Falcke, Y. Wang +1
The relation between the cosmological evolution of the jet-disk symbiosis model for GRBs and the cosmic rays energy distribution is presented. We used two different Star Formation…
TeV Cherenkov Events as Bose-Einstein Gamma Condensations
M. Harwit, R. J. Protheroe, P. L. Biermann
The recent detection of gamma radiation from Mkn 501 at energies as high as 25 TeV suggests stringent upper bounds on the diffuse, far infrared, extragalactic radiation density. Th…
A jet-disk symbiosis model for Gamma Ray Bursts: SS 433 the next?
Giovanna Pugliese, Heino Falcke, Peter L. Biermann
We consider a jet-disk symbiosis model to explain Gamma Ray Bursts and their afterglows. It is proposed that GRBs develop in a pre-existing jet. We consider a binary system formed…
Non-thermal Origin of the EUV and HEX Excess Emission of the Coma Cluster - the Nature of the Energetic Electrons
Torsten A. Ensslin, Richard Lieu, Peter L. Biermann
The excess in extreme-ultraviolet (EUV) radiation and high energy X-rays (HEX) of Coma may be modeled by power law spectra. Their origin could be inverse Compton (IC) emission by r…
Cosmic Magnetic Fields in Large Scale Filaments and Sheets
Dongsu Ryu, Hyesung Kang, Peter L. Biermann
We consider the possibility that cosmic magnetic field, instead of being uniformly distributed, is strongly correlated with the large scale structure of the universe. Then, the obs…
Black Hole Energy Release to the Gaseous Universe
Torsten A. Ensslin, Yiping Wang, Biman B. Nath +1
We estimate the energy release of black hole formation to the intra-cluster medium of the Coma cluster and find that this is comparable to the present day energy content. Therefore…
Photon-photon absorption above a molecular cloud torus in blazars
R. J. Protheroe, P. L. Biermann
Gamma rays have been observed from two blazars at TeV energies. One of these, Markarian 421, has been observed also at GeV energies and has roughly equal luminosity per decade at G…
Extragalactic ultra high energy cosmic rays, II. Comparison with experimental data
Joerg P. Rachen, Todor Stanev, Peter L. Biermann
We compare the expected contribution of FR-II hot spots to the ultra-high energy cosmic ray spectrum (Rachen & Biermann 1993, A&A in press, BB paper astro-ph/9301010) to improved e…