Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/295701COMPARTIR / EXPORTAR:
 SHARE
 CORE
BASE
|
|
| Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
| Título: | Search for new cosmic-ray acceleration sites within the 4FGL catalog galactic plane sources |
Autor: | Abdollahi, Soheila; Coronado-Blazquez, J.; Sánchez-Conde, Miguel A. CSIC ORCID; Torres, Diego F. CSIC ORCID; Zaharijas, G. | Fecha de publicación: | 2022 | Editor: | IOP Publishing | Citación: | Astrophysical Journal 933(2): 204 (2022) | Resumen: | Cosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma-rays. This offers a compelling way to identify the acceleration sites of protons. A characteristic hadronic spectrum, with a low-energy break around 200 MeV, was detected in the gamma-ray spectra of four supernova remnants (SNRs), IC 443, W44, W49B, and W51C, with the Fermi Large Area Telescope. This detection provided direct evidence that cosmic-ray protons are (re-)accelerated in SNRs. Here, we present a comprehensive search for low-energy spectral breaks among 311 4FGL catalog sources located within 5° from the Galactic plane. Using 8 yr of data from the Fermi Large Area Telescope between 50 MeV and 1 GeV, we find and present the spectral characteristics of 56 sources with a spectral break confirmed by a thorough study of systematic uncertainty. Our population of sources includes 13 SNRs for which the proton–proton interaction is enhanced by the dense target material; the high-mass gamma-ray binary LS I+61 303; the colliding wind binary η Carinae; and the Cygnus star-forming region. This analysis better constrains the origin of the gamma-ray emission and enlarges our view to potential new cosmic-ray acceleration sites. | Descripción: | Abdollahi et al. | Versión del editor: | https://doi.org/10.3847/1538-4357/ac704f | URI: | http://hdl.handle.net/10261/295701 | DOI: | 10.3847/1538-4357/ac704f | E-ISSN: | 1538-4357 |
| Aparece en las colecciones: | (ICE) Artículos (IFT) Artículos |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| searchsources.pdf | 5,44 MB | Adobe PDF |  Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
3
checked on 26-abr-2024
WEB OF SCIENCETM
Citations
3
checked on 26-feb-2024
Page view(s)
19
checked on 29-abr-2024
Download(s)
6
checked on 29-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons
