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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/168109
Ver los metadatos del registro completo
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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:UNLP2025-10-22T17:25:43Zoai: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:13292025-10-22 17:25:44.252SEDICI (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. |
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2015 |
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2015-10 |
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