78 citations · 188 across the 7 of their papers we have counts for
7 papers
Nearby quasar remnants and ultra-high energy cosmic rays
Diego F. Torres, Elihu Boldt, Timothy Hamilton +1
As recently suggested, nearby quasar remnants are plausible sites of black-hole based compact dynamos that could be capable of accelerating ultra-high energy cosmic rays (UHECRs).…
UHECR Production by a Compact Black-Hole Dynamo: Application to Sgr A*
Amir Levinson, Elihu Boldt
The possibility that the excess cosmic ray (CR) flux near 10 eV, reported recently by the AGASA group, is due to a compact black hole dynamo associated with the Sgr A* sourc…
Cosmic Ray Generation by Quasar Remnants: Constraints and Implications
Elihu Boldt, Michael Loewenstein
The quasar remnant cores of nearby giant elliptical galaxies NGC 4486 (M87), NGC 1399, NGC 4649 and NGC 4472 are the sites of supermassive (greater than one billion solar masses) b…
The Extreme Universe: Some Views From Here
Elihu Boldt
Forty years have passed since the first Explorer orbiting observatory - the 1958 mission used to discover the Van Allen radiation belts outside the atmosphere - ushered in the mode…
Cosmic rays from remnants of quasars?
Elihu Boldt, Pranab Ghosh
Considerations of the collision losses for protons traversing the 2.7 K black body microwave radiation field have led to the conclusion that the highest energy cosmic rays, those o…
Large Scale Fluctuations in the X-Ray Background
Marie Treyer, Caleb Scharf, Ofer Lahav +3
We present an attempt to measure the large angular scale fluctuations in the X-Ray Background (XRB) from the HEAO1-A2 data, expressed in terms of spherical harmonics. We model the…