A study of the association of Fermi sources with massive young galactic objects

Massive protostars have associated bipolar outflows that can produce strong shocks when they interact with the surrounding medium. At these shocks, particles can be accelerated up to relativistic energies. Relativistic electrons and protons can then produce gamma-ray emission, as some theoretical mo...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Munar Adrover, P., Paredes, Josep M, Romero, Gustavo Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123357
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123357
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
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
spellingShingle Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
Munar Adrover, P.
Paredes, Josep M
Romero, Gustavo Esteban
A study of the association of Fermi sources with massive young galactic objects
topic_facet Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
description Massive protostars have associated bipolar outflows that can produce strong shocks when they interact with the surrounding medium. At these shocks, particles can be accelerated up to relativistic energies. Relativistic electrons and protons can then produce gamma-ray emission, as some theoretical models predict. To identify young galactic objects that may emit gamma rays, we crossed the Fermi First Year Catalog with some catalogs of known massive young stellar objects (MYSOs), early type stars, and OB associations, and we implemented Monte Carlo simulations to find the probability of chance coincidences. We obtained a list of massive MYSOs that are spatially coincident with Fermi sources. Our results indicate that ~70% of these candidates should be gamma-ray sources with a confidence of ~5σ. We studied the coincidences one by one to check the viability of these young sources as potential counterparts to Fermi sources and made a short list of best targets for new detailed multifrequency observations. The results for other type of young galactic objects are not conclusive.
format Articulo
Articulo
author Munar Adrover, P.
Paredes, Josep M
Romero, Gustavo Esteban
author_facet Munar Adrover, P.
Paredes, Josep M
Romero, Gustavo Esteban
author_sort Munar Adrover, P.
title A study of the association of Fermi sources with massive young galactic objects
title_short A study of the association of Fermi sources with massive young galactic objects
title_full A study of the association of Fermi sources with massive young galactic objects
title_fullStr A study of the association of Fermi sources with massive young galactic objects
title_full_unstemmed A study of the association of Fermi sources with massive young galactic objects
title_sort study of the association of fermi sources with massive young galactic objects
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/123357
work_keys_str_mv AT munaradroverp astudyoftheassociationoffermisourceswithmassiveyounggalacticobjects
AT paredesjosepm astudyoftheassociationoffermisourceswithmassiveyounggalacticobjects
AT romerogustavoesteban astudyoftheassociationoffermisourceswithmassiveyounggalacticobjects
AT munaradroverp studyoftheassociationoffermisourceswithmassiveyounggalacticobjects
AT paredesjosepm studyoftheassociationoffermisourceswithmassiveyounggalacticobjects
AT romerogustavoesteban studyoftheassociationoffermisourceswithmassiveyounggalacticobjects
bdutipo_str Repositorios
_version_ 1764820449370308608

Ejemplares similares