409 citations · 9.6k across the 232 of their papers we have counts for
7 papers · 2 filters
The missing x-rays in Sgr A*: evidence for - not against - a supermassive black hole
Heino Falcke, Peter L. Biermann
We present a simple argument that the missing x-ray flux from the Galactic Center source Sgr~A* ist not evidence {\it against} -- as claimed by Goldwurm et al. 1994 -- but rather i…
ROSAT PSPC observations of six PG quasars and PHL 1657
Joerg P. Rachen, Karl Mannheim, Peter L. Biermann
We report results from the spectral analysis of pointed ROSAT PSPC observations of six PG quasars and the weak-bump quasar PHL 1657. Disregarding other frequency bands, the PSPC da…
Galactic jet sources and the AGN connection
Heino Falcke, Peter L. Biermann
In order to further test our hypothesis that jets and disk around compact accreting objects are symbiotic features we investigate the newly discovered superluminal galactic radio j…
SUPERNOVA BLASTWAVES AND PRE-SUPERNOVA WINDS: THEIR COSMIC RAY CONTRIBUTION
Peter L. Biermann
Supernova explosions into predecessor stellar winds can lead to particle acceleration, which we suggest can explain most of the observed cosmic rays of the nuclei of Helium and hea…
The origin of cosmic rays
Peter L. Biermann
The search for the origin of cosmic rays is a quest of almost a hundred years. A recent theoretical proposal gives quantitative predictions, which can be tested with data. Specific…
THE ORIGIN OF COSMIC RAYS
Peter L. Biermann
We propose that cosmic rays originate mainly in three sites, a) normal supernova explosions into the interstellar medium, b) supernova explosions into stellar winds, and c) hot spo…
The Origin of Galactic Cosmic Rays
Peter L. Biermann, T. K. Gaisser, Todor Stanev
Motivated by recent measurements of the major components of the cosmic radiation around 10 TeV/nucleon and above, we discuss the phenomenology of a model in which there are two dis…