Loading...
Please wait, while we are loading the content...
Similar Documents
New results from fermi-lat and their implications for the nature of dark matter and the origin of cosmic rays
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Moiseev, Alexander |
| Copyright Year | 2009 |
| Description | The measured spectrum is compatible with a power law within our current systematic errors. The spectral index (-3.04) is harder than expected from previous experiments and simple theoretical considerations. "Pre-Fermi" diffusive model requires a harder electron injection spectrum (by 0.12) to fit the Fermi data, but inconsistent with positron excess reported by Pamela if it extends to higher energy. Additional component of electron flux from local source(s) may solve the problem; its origin, astrophysical or exotic, is still unclear. Valuable contribution to the calculation of IC component of diffuse gamma radiation. |
| File Size | 7415474 |
| Page Count | 33 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20090027665 |
| Archival Resource Key | ark:/13960/t37132041 |
| Language | English |
| Publisher Date | 2009-07-06 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Gamma Rays Systematic Errors Dark Matter Positrons Diffuse Radiation Electron Spectroscopy Spectra Flux Rate Diffusivity Cosmic Rays Electrons Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
