Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results

Autores
Marchesini, Ezequiel Joaquín; Masetti, Nicola; Cellone, Sergio Aldo; Andruchow, Ileana; Bazzano, Angela; Landi, Raffaella; Malizia, Angela; Palazzi, Eliana; Stephen, John B.; Ubertini, Pietro
Año de publicación
2015
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
It is expected that a large fraction of the unidentified sources detected at γ-rays are blazars. Through cross–correlation between the positions of unidentified objects from the 1FHL Fermi catalogue of γ-ray sources and the ROSAT, XMM Slew and Swift/XRT catalogues of X–ray objects, a sample of 38 associations was found with less than 10 arcsec of positional error. One third of them has recently been classified; the remainder, though believed to belong to the blazar class, has not yet been identified. Therefore, we aim at studying the optical spectra of the counterparts of these unidentified sources in order to find their redshifts and to analyse their nature and main spectral features. We present here our preliminary results from optical spectroscopic observations at the 3.58m Telescopio Nazionale Galileo (TNG) for 7 of them.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
unidentified sources
blazars
1FHL Fermi catalogue
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/168109

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network_name_str SEDICI (UNLP)
spelling Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary resultsMarchesini, Ezequiel JoaquínMasetti, NicolaCellone, Sergio AldoAndruchow, IleanaBazzano, AngelaLandi, RaffaellaMalizia, AngelaPalazzi, ElianaStephen, John B.Ubertini, PietroCiencias Astronómicasunidentified sourcesblazars1FHL Fermi catalogueIt is expected that a large fraction of the unidentified sources detected at γ-rays are blazars. Through cross–correlation between the positions of unidentified objects from the 1FHL Fermi catalogue of γ-ray sources and the ROSAT, XMM Slew and Swift/XRT catalogues of X–ray objects, a sample of 38 associations was found with less than 10 arcsec of positional error. One third of them has recently been classified; the remainder, though believed to belong to the blazar class, has not yet been identified. Therefore, we aim at studying the optical spectra of the counterparts of these unidentified sources in order to find their redshifts and to analyse their nature and main spectral features. We present here our preliminary results from optical spectroscopic observations at the 3.58m Telescopio Nazionale Galileo (TNG) for 7 of them.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2015-10info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf159-162http://sedici.unlp.edu.ar/handle/10915/168109enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-24948-3-4info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/167830info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:44:50Zoai:sedici.unlp.edu.ar:10915/168109Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:44:50.984SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
title Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
spellingShingle Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
Marchesini, Ezequiel Joaquín
Ciencias Astronómicas
unidentified sources
blazars
1FHL Fermi catalogue
title_short Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
title_full Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
title_fullStr Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
title_full_unstemmed Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
title_sort Looking for blazars in a sample of unidentified high-energy emitting Fermi sources: preliminary results
dc.creator.none.fl_str_mv Marchesini, Ezequiel Joaquín
Masetti, Nicola
Cellone, Sergio Aldo
Andruchow, Ileana
Bazzano, Angela
Landi, Raffaella
Malizia, Angela
Palazzi, Eliana
Stephen, John B.
Ubertini, Pietro
author Marchesini, Ezequiel Joaquín
author_facet Marchesini, Ezequiel Joaquín
Masetti, Nicola
Cellone, Sergio Aldo
Andruchow, Ileana
Bazzano, Angela
Landi, Raffaella
Malizia, Angela
Palazzi, Eliana
Stephen, John B.
Ubertini, Pietro
author_role author
author2 Masetti, Nicola
Cellone, Sergio Aldo
Andruchow, Ileana
Bazzano, Angela
Landi, Raffaella
Malizia, Angela
Palazzi, Eliana
Stephen, John B.
Ubertini, Pietro
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
unidentified sources
blazars
1FHL Fermi catalogue
topic Ciencias Astronómicas
unidentified sources
blazars
1FHL Fermi catalogue
dc.description.none.fl_txt_mv It is expected that a large fraction of the unidentified sources detected at γ-rays are blazars. Through cross–correlation between the positions of unidentified objects from the 1FHL Fermi catalogue of γ-ray sources and the ROSAT, XMM Slew and Swift/XRT catalogues of X–ray objects, a sample of 38 associations was found with less than 10 arcsec of positional error. One third of them has recently been classified; the remainder, though believed to belong to the blazar class, has not yet been identified. Therefore, we aim at studying the optical spectra of the counterparts of these unidentified sources in order to find their redshifts and to analyse their nature and main spectral features. We present here our preliminary results from optical spectroscopic observations at the 3.58m Telescopio Nazionale Galileo (TNG) for 7 of them.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description It is expected that a large fraction of the unidentified sources detected at γ-rays are blazars. Through cross–correlation between the positions of unidentified objects from the 1FHL Fermi catalogue of γ-ray sources and the ROSAT, XMM Slew and Swift/XRT catalogues of X–ray objects, a sample of 38 associations was found with less than 10 arcsec of positional error. One third of them has recently been classified; the remainder, though believed to belong to the blazar class, has not yet been identified. Therefore, we aim at studying the optical spectra of the counterparts of these unidentified sources in order to find their redshifts and to analyse their nature and main spectral features. We present here our preliminary results from optical spectroscopic observations at the 3.58m Telescopio Nazionale Galileo (TNG) for 7 of them.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/168109
url http://sedici.unlp.edu.ar/handle/10915/168109
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-24948-3-4
info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/167830
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
159-162
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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