High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited

LS I +61 303 has been detected by the Cherenkov telescope MAGIC at very high energies, presenting a variable flux along the orbital motion with a maximum clearly separated from the periastron passage. In the light of the new observational constraints, we revisit the discussion of the production of h...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Orellana, Mariana Dominga, Romero, Gustavo Esteban
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2007
Materias:
Ciencias Astronómicas
X ray binaries
Mass loss
Stellar winds
Gamma ray sources
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/101354
https://ri.conicet.gov.ar/11336/26937
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-101354
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
X ray binaries
Mass loss
Stellar winds
Gamma ray sources
spellingShingle Ciencias Astronómicas
X ray binaries
Mass loss
Stellar winds
Gamma ray sources
Orellana, Mariana Dominga
Romero, Gustavo Esteban
High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited
topic_facet Ciencias Astronómicas
X ray binaries
Mass loss
Stellar winds
Gamma ray sources
description LS I +61 303 has been detected by the Cherenkov telescope MAGIC at very high energies, presenting a variable flux along the orbital motion with a maximum clearly separated from the periastron passage. In the light of the new observational constraints, we revisit the discussion of the production of high-energy gamma rays from particle interactions in the inner jet of this system. The hadronic contribution could represent a major fraction of the TeV emission detected from this source. The spectral energy distribution resulting from pp interactions is recalculated. Opacity effects introduced by the photon fields of the primary star and the stellar decretion disk are shown to be essential in shaping the high-energy gamma-ray light curve at energies close to 200 GeV. We also present results of Monte Carlo simulations of the electromagnetic cascades developed very close to the periastron passage. We conclude that a hadronic microquasar model for the gamma-ray emission in LS I +61 303 can reproduce the main features of its observed highenergy γ -ray flux.
format Articulo
Preprint
author Orellana, Mariana Dominga
Romero, Gustavo Esteban
author_facet Orellana, Mariana Dominga
Romero, Gustavo Esteban
author_sort Orellana, Mariana Dominga
title High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited
title_short High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited
title_full High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited
title_fullStr High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited
title_full_unstemmed High-energy gamma-ray emission from the inner jet of LS I +61 303: the hadronic contribution revisited
title_sort high-energy gamma-ray emission from the inner jet of ls i +61 303: the hadronic contribution revisited
publishDate 2007
url http://sedici.unlp.edu.ar/handle/10915/101354
https://ri.conicet.gov.ar/11336/26937
work_keys_str_mv AT orellanamarianadominga highenergygammarayemissionfromtheinnerjetoflsi61303thehadroniccontributionrevisited
AT romerogustavoesteban highenergygammarayemissionfromtheinnerjetoflsi61303thehadroniccontributionrevisited
bdutipo_str Repositorios
_version_ 1764820442335412224

Ejemplares similares