On the Possible Association of Ultra High Energy Cosmic Rays with Nearby Active Galaxies (2008)
Moskalenko, Igor V., Stawarz, Lukasz, Porter, Troy A., Cheung, Chi C.
(Abridged) Data collected by the Pierre Auger Obsevatory provide evidence for anisotropy in the arrival directions of cosmic rays (CRs) with energies >57 EeV that suggests a correlation with the...
Inverse Compton Origin of the Hard X-Ray and Soft Gamma-Ray Emission from the Galactic Ridge (2008)
Porter, Troy A., Moskalenko, Igor V., Strong, Andrew W., Orlando, Elena, Bouchet, Laurent
A recent re-determination of the non-thermal component of the hard X-ray to soft gamma-ray emission from the Galactic ridge, using the SPI instrument on the INTErnational Gamma-Ray Astrophysics...
Inverse Compton origin of the hard X-ray and soft gamma-ray emission from the galactic ridge (2008)
Porter, Troy A., Moskalenko, Igor V., Strong, Andrew W., Orlando, Elena
Moskalenko, Igor V., Porter, Troy A., Digel, Seth W., Michelson, Peter F., Ormes, Jonathan F.
We calculate the gamma-ray albedo flux from cosmic-ray (CR) interactions with the solid rock and ice in Main Belt asteroids (MBAs), Jovian and Neptunian Trojan asteroids, and Kuiper Belt objects...
The Gamma-ray Albedo of the Moon (2007)
Moskalenko, Igor V., Porter, Troy A.
We use the GEANT4 Monte Carlo framework to calculate the gamma-ray albedo of the Moon due to interactions of cosmic ray (CR) nuclei with moon rock. Our calculation of the albedo spectrum agrees with...
Isotopic composition of cosmic-ray sources (2007)
Moskalenko, Igor V., Strong, Andrew W., Porter, Troy A.
We use the GALPROP code and the Advanced Composition Explorer (ACE) data to derive the cosmic ray (CR) isotopic composition at the sources. The composition is derived for two propagation models,...
Origin and propagation of cosmic rays (some highlights) (2007)
The detection of high-energy particles, cosmic rays (CRs), deep inside the heliosphere implies that there are, at least, three distinctly different stages in the lifetime of a CR particle:...
Measuring 10-1000 GeV Cosmic Ray Electrons with GLAST/LAT (2007)
Moiseev, Alexander A., Ormes, Jonathan F., Moskalenko, Igor V.
We present here the capabilities of the GLAST Large Area Telescope to detect cosmic ray high-energy (HE) electrons in the energy range from 10 GeV to 1 TeV. We also discuss the science topics that...
Gamma-ray albedo of the moon (2007)
Moskalenko, Igor V., Porter, Troy A.
We use the GEANT4 Monte Carlo framework to calculate the gamma-ray albedo of the Moon due to interactions of cosmic ray (CR) nuclei with moon rock. Our calculation of the albedo spectrum agrees with...
Identifying Dark Matter Burners in the Galactic center (2007)
Moskalenko, Igor V., Wai, Lawrence L.
If the supermassive black hole (SMBH) at the center of our Galaxy grew adiabatically, then a dense "spike" of dark matter is expected to have formed around it. Assuming that dark matter is composed...
Developing the Galactic diffuse emission model for the GLAST Large Area Telescope (2007)
Moskalenko, Igor V., Strong, Andrew W., Digel, Seth W., Porter, Troy A.
Diffuse emission is produced in energetic cosmic ray (CR) interactions, mainly protons and electrons, with the interstellar gas and radiation field and contains the information about particle spectra...
Moskalenko, Igor V., Wai, Lawrence L.
We show that a star orbiting close enough to an adiabatically grown supermassive black hole (SMBH) can capture weakly interacting massive particles (WIMPs) at an extremely high rate. The stellar...
Cosmic-ray propagation and interactions in the Galaxy (2007)
Strong, Andrew W., Moskalenko, Igor V., Ptuskin, Vladimir S.
We survey the theory and experimental tests for the propagation of cosmic rays in the Galaxy up to energies of 10^15 eV. A guide to the previous reviews and essential literature is given, followed by...
Developing the galactic diffuse emission model for the GLAST large area telescope (2007)
Moskalenko, Igor V., Strong, Andrew W., Digel, Seth W., Porter, Troy A.
Cosmic-ray propagation and interactions in the galaxy (2007)
Strong, Andrew W., Moskalenko, Igor V., Ptuskin, Vladimir S.
Understanding limitations in the determination of the diffuse galactic γ-ray emission (2007)
Moskalenko, Igor V., Digel, Seth W., Porter, Troy A., Reimer, Olaf, Strong, Andrew W.
Moskalenko, Igor V., Porter, Troy A., Digel, Seth W.
We study the inverse Compton scattering of solar photons by Galactic cosmic-ray electrons. We show that the gamma-ray emission from this process is substantial with the maximum flux in the direction...
Porter, Troy A., Moskalenko, Igor V., Strong, Andrew W.
The evidence for particle acceleration in supernova shells comes from electrons whose synchrotron emission is observed in radio and X-rays. Recent observations by the HESS instrument reveal that...
Ptuskin, Vladimir S., Moskalenko, Igor V., Jones, Frank C., Strong, Andrew W., Zirakashvili, Vladimir N.
A New Determination Of The Diffuse Galactic and Extragalactic Gamma-Ray Emission (2005)
Strong, Andrew W., Moskalenko, Igor V., Reimer, Olaf
The GALPROP model for cosmic-ray propagation is able to make explicit predictions for the distribution of galactic diffuse gamma-rays. We compare different propagation models with gamma-ray spectra...
Propagation of light elements in the galaxy (2003)
Moskalenko, Igor V., Strong, Andrew W., Mashnik, Stepan G., Jones, Frank C.
THE ASTROPHYSICAL JOURNAL, 565 280296, 2002 January 20 (2002)
Igor V. Moskalenko, Andrew W. Strong, Jonathan F. Ormes, Marius S. Potgieter
High-energy collisions of cosmic-ray nuclei with interstellar gas are believed to be the mechanism producing the majority of cosmic-ray antiprotons. Because of the kinematics of the process, they are...
Secondary antiprotons and propagation of cosmic rays in the galaxy and heliosphere (2002)
Moskalenko, Igor V., Strong, Andrew W., Ormes, Jonathan F., Potgieter, Marius S.
High-energy collisions of cosmic-ray nuclei with interstellar gas are believed to be the mechanism producing the majority of cosmic-ray antiprotons. Because of the kinematics of the process, they are...
Galactic Cosmic Rays Gamma Rays: A Synthesis (1999)
Andrew W. Strong, Igor V. Moskalenko
. We have developed a model which aims to reproduce observational data of many kinds related to cosmic-ray origin and propagation: direct measurements of nuclei, antiprotons, electrons and positrons,...
Galactic Cosmic Rays and Gamma Rays: A Unified Approach (1998)
Andrew W. Strong, Igor V. Moskalenko
We are constructing a model which aims to reproduce observational data of many kinds related to cosmic-ray origin and propagation: direct measurements of nuclei, antiprotons, electrons and positrons,...
A Pair Plasma Model For Pks 0208--512 (1998)
Igor V. Moskalenko, Werner Collmar
Assuming that the enhanced MeV emission from the MeV blazar PKS 0208-- 512 observed by COMPTEL on occasions is due to annihilation in a pair plasma, we estimate parameters of the annihilation region:...
A model for the high-energy emission of Cyg X-1 (1998)
Igor V. Moskalenko, Werner Collmar
. We construct a model of Cyg X-1 which describes self-consistently its emission from soft X-rays to MeV fl-rays. Instead of a compact pair-dominated fl-ray emitting region, we consider a hot...
Observational constraints on annihilation sites in 1E 1740.7--2942 and Nova Muscae (1998)
. The region of the Galactic center contains several sources which demonstrate their activity at various wavelengths and particularly above several hundred keV [1]. Escape of positrons from such a...
Modelling cosmic rays and gamma rays in the Galaxy (1998)
Andrew W. Strong, Igor V. Moskalenko
. An extensive program for the calculation of galactic cosmic-ray propagation has been developed. This is a continuation of the work described in [1]. The main motivation for developing this code [2]...
Modelling cosmic rays and gamma rays in the Galaxy (1997)
Andrew W. Strong, Igor V. Moskalenko
. An extensive program for the calculation of galactic cosmic-ray propagation has been developed. This is a continuation of the work described in [1]. The main motivation for developing this code [2]...