File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.7529/ICRC2011/V06/1355
- Scopus: eid_2-s2.0-84899506982
Supplementary
-
Citations:
- Scopus: 0
- Appears in Collections:
Conference Paper: Cosmic ray spectral hardening due to dispersion of source injection spectra
| Title | Cosmic ray spectral hardening due to dispersion of source injection spectra |
|---|---|
| Authors | |
| Keywords | Cosmic rays Energy spectra and composition Supernova remnants |
| Issue Date | 2011 |
| Citation | Proceedings of the 32nd International Cosmic Ray Conference Icrc 2011, 2011, v. 6, p. 222-225 How to Cite? |
| Abstract | The cosmic ray (CR) energy spectra measured with ATIC, CREAM and PAMELA showed that there is remarkable hardening for rigidity of several hundred GV. We propose that this hardening is due to the superposition of spectra from a population of sources, e.g., supernova remnants (SNRs), whose injection spectral indices have a dispersion. Adopting proper model parameters the observational data can be well explained. It is interesting that the injection source parameters are similar with that derived from gamma-ray observations of SNRs, which may support the SNRorigin of CRs. Furthermore this mechanism provides an alternative explanation of the "ankle-cutoff" structure of the ultra high energy CR spectra. |
| Persistent Identifier | http://hdl.handle.net/10722/361284 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Yuan, Qiang | - |
| dc.contributor.author | Zhang, Bing | - |
| dc.contributor.author | Bi, Xiao Jun | - |
| dc.date.accessioned | 2025-09-16T04:15:51Z | - |
| dc.date.available | 2025-09-16T04:15:51Z | - |
| dc.date.issued | 2011 | - |
| dc.identifier.citation | Proceedings of the 32nd International Cosmic Ray Conference Icrc 2011, 2011, v. 6, p. 222-225 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/361284 | - |
| dc.description.abstract | The cosmic ray (CR) energy spectra measured with ATIC, CREAM and PAMELA showed that there is remarkable hardening for rigidity of several hundred GV. We propose that this hardening is due to the superposition of spectra from a population of sources, e.g., supernova remnants (SNRs), whose injection spectral indices have a dispersion. Adopting proper model parameters the observational data can be well explained. It is interesting that the injection source parameters are similar with that derived from gamma-ray observations of SNRs, which may support the SNRorigin of CRs. Furthermore this mechanism provides an alternative explanation of the "ankle-cutoff" structure of the ultra high energy CR spectra. | - |
| dc.language | eng | - |
| dc.relation.ispartof | Proceedings of the 32nd International Cosmic Ray Conference Icrc 2011 | - |
| dc.subject | Cosmic rays | - |
| dc.subject | Energy spectra and composition | - |
| dc.subject | Supernova remnants | - |
| dc.title | Cosmic ray spectral hardening due to dispersion of source injection spectra | - |
| dc.type | Conference_Paper | - |
| dc.description.nature | link_to_subscribed_fulltext | - |
| dc.identifier.doi | 10.7529/ICRC2011/V06/1355 | - |
| dc.identifier.scopus | eid_2-s2.0-84899506982 | - |
| dc.identifier.volume | 6 | - |
| dc.identifier.spage | 222 | - |
| dc.identifier.epage | 225 | - |