863 citations
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9 papers · 1 filter
Cosmic-ray positrons from millisecond pulsars
C. Venter, A. Kopp, A. K. Harding +2
Observations by the Fermi Large Area Telescope of gamma-ray millisecond pulsar light curves imply copious pair production in their magnetospheres, and not exclusively in those of y…
Short Timescale Photometric and Polarimetric Behavior of two BL Lacertae Type Objects
S. Covino, M. C. Baglio, L. Foschini +20
Blazars are astrophysical sources whose emission is dominated by non-thermal processes, typically interpreted as synchrotron and inverse Compton emission. Although the general pict…
Polarization Swings Reveal Magnetic Energy Dissipation in Blazars
Haocheng Zhang, Xuhui Chen, Markus Boettcher +2
The polarization signatures of the blazar emissions are known to be highly variable. In addition to small fluctuations of the polarization angle around a mean value, sometimes larg…
Cosmic rays in astrospheres
Klaus Scherer, Ausgusts van der Schyff, Dominik Bomans +7
Cosmic rays passing through large astrospheres can be efficiently cooled inside these "cavities" in the interstellar medium. Moreover, the energy spectra of these energetic particl…
Time Dependent Hadronic Modeling of Flat Spectrum Radio Quasars
Christopher Diltz, Markus Boettcher, Giovanni Fossati
We introduce a new time-dependent lepto-hadronic model for blazar emission that takes into account the radiation emitted by secondary particles, such as pions and muons, from photo…
Spots on Am stars
L. A. Balona, G. Catanzaro, O. P. Abedigamba +2
We investigate the light variations of 15 Am stars using four years of high-precision photometry from the Kepler spacecraft and an additional 14 Am stars from the K2 Campaign 0 fie…