409 citations · 9.6k across the 232 of their papers we have counts for
9 papers · 1 filter
Cosmic backgrounds due to the formation of the first generation of supermassive black holes
Peter L. Biermann, Biman B. Nath, Laurenţiu I. Caramete +3
The statistics of black holes and their masses strongly suggests that their mass distribution has a cutoff towards lower masses near M. This is consiste…
Towards the Chalonge Meudon Workshop 2013. Highlights and Conclusions of the Chalonge Meudon workshop 2012: warm dark matter galaxy formation in agreement with observations
P. L. Biermann, H. J. de Vega, N. G. Sanchez
Warm Dark Matter(WDM), considerably clarifies and simplifies galaxies and galaxy formation in agreement with observations. WDM essentially works, naturally reproducing the astronom…
Dark energy as stimulated emission of gravitons from a background brane
Peter L. Biermann, Benjamin C. Harms
The idea that dark energy is gravitational waves may explain its strength and its time-evolution provided that the additional energy comes from a background. A possible concept is…
On the origin of X-shaped radio galaxies
Gopal-Krishna, Peter L. Biermann, László Á. Gergely +1
After a brief, critical review of the leading explanations proposed for the small but important subset of radio galaxies showing an X-shaped morphology (XRGs) we propose a generali…
Maximal spin and energy conversion efficiency in a symbiotic system of black hole, disk and jet
Zoltán Kovács, László Á. Gergely, Peter L. Biermann
We study a combined model of black hole - accretion disk - magnetosphere - jet symbiosis, applicable for supermassive black holes. We quantify the mass and spin evolution and we an…
Supermassive black hole spin-flip during the inspiral
László Á. Gergely, Peter L. Biermann, Laurenţiu I. Caramete
During post-Newtonian evolution of a compact binary, a mass ratio different from 1 provides a second small parameter, which can lead to unexpected results. We present a statistics…
The mass function of nearby black hole candidates
Laurentiu I. Caramete, Peter L. Biermann
The mass function of super-massive black holes in our cosmic neighborhood is required to understand the statistics of their activity and consequently the origin of the ultra high e…
Studies of Cosmic Ray Composition and Air Shower Structure with the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +470
Studies of the composition of the highest energy cosmic rays with the Pierre Auger Observatory, including examination of hadronic physics effects on the structure of extensive air…
On the detectability of primordial black holes in the Galaxy
Julia K. Becker, Marek A. Abramowicz, Peter L. Biermann
In the mass range of 1e15 g up to 1e26 g, primordial black holes (PBHs) as a possible contribution to the dark matter are still unexplored. In this contribution, we investigate the…