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 Observatory (Auger) provide evidence for anisotropy in the arrival directions of cosmic rays (CRs) with energies >57 EeV that suggests a correlation with...
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,...
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...
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...
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.
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...