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Inverse Compton Origin of the Hard X‐Ray and Soft Gamma‐Ray Emission from the Galactic Ridge
Open accessAbstract
A recent redetermination of the nonthermal component of the hard X-ray to soft γ-ray emission from the Galactic ridge, using the SPI instrument on the International Gamma-Ray Astrophysics Laboratory ( INTEGRAL ), 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.
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Cited by
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FERMI-LAT OBSERVATIONS OF HIGH-ENERGY γ-RAY EMISSION TOWARD THE GALACTIC CENTER
Ajello, M., Albert, A., Atwood, W. B., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., et al. (2016) · The Astrophysical Journal · doi:10.3847/0004-637x/819/1/44 · Cited by 401
Self-citationCONSTRAINTS ON COSMIC-RAY PROPAGATION MODELS FROM A GLOBAL BAYESIAN ANALYSIS
Trotta, R., Jóhannesson, G., Moskalenko, I. V., Porter, T. A., Ruiz de Austri, R., & Strong, A. W. (2011) · The Astrophysical Journal · doi:10.1088/0004-637x/729/2/106 · Cited by 332
Self-citationTHE SPECTRUM AND MORPHOLOGY OF THE FERMI BUBBLES
Ackermann, M., Albert, A., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., et al. (2014) · The Astrophysical Journal · doi:10.1088/0004-637x/793/1/64 · Cited by 328
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Metadata
- Authors
- Porter, T. A., Moskalenko, I. V., Strong, A. W., Orlando, E., & Bouchet, L.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2008-07-20
- Volume
- 682
- Issue
- 1
- Pages
- 400-407
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2129746122
- Cited by
- 245
- References
- 0
- FWCI
- 11.10
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Porter, T. A., Moskalenko, I. V., Strong, A. W., Orlando, E., & Bouchet, L. (2008). Inverse Compton Origin of the Hard X‐Ray and Soft Gamma‐Ray Emission from the Galactic Ridge. The Astrophysical Journal. https://doi.org/10.1086/589615
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