Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28592
DC Field | Value | Language |
---|---|---|
dc.contributor.author | MORLINO, GIOVANNI | en_US |
dc.contributor.author | D'Angelo, M. | en_US |
dc.contributor.author | Blasi, P. | en_US |
dc.contributor.author | AMATO, Elena | en_US |
dc.date.accessioned | 2020-11-30T14:06:21Z | - |
dc.date.available | 2020-11-30T14:06:21Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 1824-8039 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28592 | - |
dc.description.abstract | Recent observations of the diffuse Galactic gamma-ray emission by the Fermi-LAT satellite have shown significant deviations from models which assume the same diffusion properties for cosmic rays (CR) throughout the Galaxy. We explore the possibility that a fraction of this diffuse Galactic emission could be due to hadronic interactions of CRs self-confined in the region around their sources. In fact, freshly accelerated CRs that diffuse away from the acceleration region can trigger the streaming instability able to amplify magnetic disturbance and to reduce the particle diffusion. When this happen, CRs are trapped in the near source region for a time longer than expected and an extended gamma-ray halo is produces around each source. Here we calculate the contribution to the diffuse gamma-ray background due to the overlap along lines of sight of several of these extended halos. We find that if the density of neutrals is low, the halos can account for a substantial fraction of the diffuse emission observed by Fermi-LAT, depending on the orientation of the line of sight with respect to the direction of the galactic center. | en_US |
dc.language.iso | eng | en_US |
dc.title | Contribution to diffuse gamma-ray emission coming from self-confined CRs around their Galactic sources | en_US |
dc.type | Conference paper | - |
dc.identifier.doi | 10.22323/1.301.0876 | en_US |
dc.identifier.scopus | 2-s2.0-85088407251 | en_US |
dc.identifier.url | https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=301 | en_US |
dc.identifier.url | https://pos.sissa.it/301/876/ | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 301 | en_US |
dc.relation.firstpage | 876 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 4 | en_US |
dc.description.international | no | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.ispartofbook | 35th International Cosmic Ray Conference (ICRC2017) | en_US |
dc.type.invited | no | en_US |
dc.relation.conferencename | 35th International Cosmic Ray Conference (ICRC2017) | en_US |
dc.relation.conferenceplace | Bexco, Busan, Korea | en_US |
dc.relation.conferencedate | 10-20 July, 2017 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | POS PROCEEDINGS OF SCIENCE | en_US |
dc.type.miur | 273 Contributo in Atti di convegno | - |
dc.identifier.adsbibcode | 2017ICRC...35..876M | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Conference paper | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 1824-8039 | - |
crisitem.journal.ance | E188909 | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0002-5014-4817 | - |
crisitem.author.orcid | 0000-0002-9881-8112 | - |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
ICRC2017_876.pdf | Pdf editoriale | 269.65 kB | Adobe PDF | View/Open |
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