Inverse Compton Origin of the Hard X-ray and Soft gamma-ray Emission from the Galactic Ridge
Journal Article
·
· Astrophys.J.682:400-407, 2008
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 Laboratory (INTEGRAL) Observatory, is shown to be well reproduced as inverse-Compton emission from the interstellar medium. Both cosmic-ray primary electrons and secondary electrons and positrons contribute to the emission. The prediction uses the GALPROP model and includes a new calculation of the interstellar radiation field. This may solve a long-standing mystery of the origin of this emission, and potentially opens a new window on Galactic cosmic rays.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 939111
- Report Number(s):
- SLAC-PUB-13211; ASJOAB; arXiv:0804.1774; TRN: US0806180
- Journal Information:
- Astrophys.J.682:400-407, 2008, Vol. 682; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Soft gamma-ray galactic ridge emission as unveiled by SPI aboard INTEGRAL
DIFFUSE EMISSION MEASUREMENT WITH THE SPECTROMETER ON INTEGRAL AS AN INDIRECT PROBE OF COSMIC-RAY ELECTRONS AND POSITRONS
The 511 keV emission from positron annihilation in the Galaxy
Journal Article
·
Thu Jul 12 00:00:00 EDT 2007
· AIP Conference Proceedings
·
OSTI ID:939111
+6 more
DIFFUSE EMISSION MEASUREMENT WITH THE SPECTROMETER ON INTEGRAL AS AN INDIRECT PROBE OF COSMIC-RAY ELECTRONS AND POSITRONS
Journal Article
·
Tue Sep 20 00:00:00 EDT 2011
· Astrophysical Journal
·
OSTI ID:939111
+2 more
The 511 keV emission from positron annihilation in the Galaxy
Journal Article
·
Fri Jul 01 00:00:00 EDT 2011
· Reviews of Modern Physics
·
OSTI ID:939111
+9 more