10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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18 papers · 2 filters
Ultimate synchrotron cutoff in gamma-ray spectra of blazars as a signature of the converter mechanism
Boris E. Stern, Yana Y. Tikhomirov
There is a robust upper limit on the energy of synchrotron radiation in high-energy astrophysics: , where is the fine structure constant and the…
An analysis of electron distributions in galaxy clusters by means of the flux ratio of iron lines FeXXV and XXVI
D. A. Prokhorov, F. Durret, V. A. Dogiel +1
The interpretation of hard X-ray emission from galaxy clusters is still ambiguous and different models proposed can be probed using various observational methods. Here we explore a…
Absorption Phenomena and a Probable Blast Wave in the 13 July 2004 Eruptive Event
V. V. Grechnev, A. M. Uralov, V. A. Slemzin +3
We present a case study of the 13 July 2004 solar event, in which disturbances caused by eruption of a filament from an active region embraced a quarter of the visible solar surfac…
Observation of an anomalous positron abundance in the cosmic radiation
O. Adriani, G. C. Barbarino, G. A. Bazilevskaya +48
Positrons are known to be produced in interactions between cosmic-ray nuclei and interstellar matter ("secondary production"). Positrons may, however, also be created by dark matte…
Two years of flight of the Pamela experiment: results and perspectives
M. Casolino, Pamela Collaboration
PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar, and trapped nature in a wide energy range (protons: 80 MeV-700 GeV, ele…
On the central core in MHD winds and jets
V. S. Beskin, E. E. Nokhrina
We demonstrate that the 1D cylindrical version of the Grad-Shafranov equation is more rich than classical self-similar ones, and more suitable for the astrophysical jets we observe…
Interstellar Plasma Turbulence Spectrum Toward the Pulsars PSR B0809+74 and B0950+08
T. V. Smirnova, V. I. Shishov
Interstellar scintillations of pulsars PSR B0809+74 and B0950+08 have been studied using observations at low frequencies (41, 62, 89, and 112 MHz). Characteristic temporal and freq…
A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
O. Adriani, G. C. Barbarino, G. A. Bazilevskaya +50
A new measurement of the cosmic ray antiproton-to-proton flux ratio between 1 and 100 GeV is presented. The results were obtained with the PAMELA experiment, which was launched int…
All-particle primary energy spectrum in the 3-200 PeV energy range
A. P. Garyaka, R. M. Martirosov, S. V. Ter-Antonyan +5
We present all-particle primary cosmic-ray energy spectrum in the 3-200 PeV energy range obtained by a multi-parametric event-by-event evaluation of the primary energy. The results…
Injection to the pick-up ion regime from high energies and induced ion power laws
H. -J. Fahr, I. V. Chashei, D. Verscharen
Though pick-up ions (PUIs) are a well known phenomenon in the inner heliosphere their phase-space distribution nevertheless is a theoretically unsettled problem. Especially the que…
Dark energy: myths and reality
V. N. Lukash, V. A. Rubakov
We discuss the questions related to dark energy in the Universe. We note that in spite of the effect of dark energy, large-scale structure is still being generated in the Universe…
Photon breeding mechanism in relativistic jets: astrophysical implications
Juri Poutanen, Boris E. Stern
Photon breeding in relativistic jets involves multiplication of high-energy photons propagating from the jet to the external environment and back with the conversion into electron-…
Gamma-ray emission of relativistic jets as a supercritical process
Boris E. Stern, Juri Poutanen
Supercriticality of the same kind as that in a nuclear pile can take place in high-energy astrophysical objects producing a number of impressive effects. For example, it could caus…
Constraints on the massive graviton dark matter from pulsar timing and precision astrometry
Maxim Pshirkov, Artem Tuntsov, Konstantin A. Postnov
The effect of a narrow-band isotropic stochastic GW background on pulsar timing and astrometric measurements is studied. Such a background appears in some theories of gravity. We s…
Dark matter dynamics in Galactic center
Eugene Vasiliev, Maxim Zelnikov
The evolution of dark matter in central areas of galaxies is considered (the Milky Way is taken as an example). It is driven by scattering off of dark matter particles by bulge sta…
Primordial black holes and asteroid danger
Alexander Shatskiy
Probability for a primordial black hole to invade the Kuiper belt was calculated. We showed that primordial black holes of certain masses can significantly change asteroids' orbits…
On the Cylindrical Grad-Shafranov Equation
V. S. Beskin, E. E. Nokhrina
The goal of this presentation is in paying attention to the 1D cylindrical version of the Grad-Shafranov (GS) equation. In our opinion, this approach is more rich than classical se…
Analysis and interpretation of a fast limb CME with eruptive prominence, C-flare and EUV dimming
Serge Koutchmy, Vladimir Slemzin, Boris Filippov +3
Coronal Mass ejections or CMEs are large dynamical solar-corona events. The mass balance and kinematics of a fast limb CME, including its prominence progenitor and the associated f…