Multiband optical variability of 3C 279 on diverse time-scales

Autores
Agarwal, Aditi; Cellone, Sergio Aldo; Andruchow, Ileana; Mammana, Luis Antonio; Singh, Mridweeka; Anupama, G. C.; Mihov, B.; Raj, Ashish; Slavcheva Mihova, L.; Özdönmez, Aykut; Ege, Ergün
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have monitored the flat spectrum radio quasar, 3C 279, in the optical B, V, R, and I passbands from 2018 February to 2018 July for 24 nights, with a total of 716 frames, to study flux, colour, and spectral variability on diverse time-scales. 3C 279 was observed using seven different telescopes: two in India, two in Argentina, two in Bulgaria, and one in Turkey to understand the nature of the source in optical regime. The source was found to be active during the whole monitoring period and displayed significant flux variations in B, V, R, and I passbands. Variability amplitudes on intraday basis varied from 5.20 to 17.9 per cent. A close inspection of variability patterns during our observation cycle reveals simultaneity among optical emissions from all passbands. During the complete monitoring period, progressive increase in the amplitude of variability with frequency was detected for our target. The amplitudes of variability in B, V, R, and I passbands have been estimated to be 177 per cent, 172 per cent, 171 per cent, and 158 per cent, respectively. Using the structure function technique, we found intraday time-scales ranging from ∼23 min to about 115 min. We also studied colour–magnitude relationship and found indications of mild bluer-when-brighter trend on shorter time-scales. Spectral indices ranged from 2.3 to 3.0 with no clear trend on long-term basis. We have also generated spectral energy distributions for 3C 279 in optical B, V, R, and I passbands for 17 nights. Finally, possible emission mechanisms causing variability in blazars are discussed briefly.
Fil: Agarwal, Aditi. Indian Institute of Astrophysics; India
Fil: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
Fil: Andruchow, Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Mammana, Luis Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
Fil: Singh, Mridweeka. Aryabhatta Research Institute of Observational Sciences; India
Fil: Anupama, G. C.. Indian Institute of Astrophysics; India
Fil: Mihov, B.. Bulgarian Academy of Sciences; Bulgaria
Fil: Raj, Ashish. Indian Institute of Astrophysics; India
Fil: Slavcheva Mihova, L.. Bulgarian Academy of Sciences; Bulgaria
Fil: Özdönmez, Aykut. Tübİtak National Observatory; Turquía
Fil: Ege, Ergün. Istanbul University; Turquía
Materia
BL LACERTAE OBJECTS: GENERAL
BL LACERTAE OBJECTS: INDIVIDUAL: 3C 279
GALAXIES: ACTIVE
QUASARS: INDIVIDUAL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/130073
Acceder
id CONICETDig_7dfe2e951f0890473c85689fa779c8bf
oai_identifier_str oai:ri.conicet.gov.ar:11336/130073
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Multiband optical variability of 3C 279 on diverse time-scalesAgarwal, AditiCellone, Sergio AldoAndruchow, IleanaMammana, Luis AntonioSingh, MridweekaAnupama, G. C.Mihov, B.Raj, AshishSlavcheva Mihova, L.Özdönmez, AykutEge, ErgünBL LACERTAE OBJECTS: GENERALBL LACERTAE OBJECTS: INDIVIDUAL: 3C 279GALAXIES: ACTIVEQUASARS: INDIVIDUALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have monitored the flat spectrum radio quasar, 3C 279, in the optical B, V, R, and I passbands from 2018 February to 2018 July for 24 nights, with a total of 716 frames, to study flux, colour, and spectral variability on diverse time-scales. 3C 279 was observed using seven different telescopes: two in India, two in Argentina, two in Bulgaria, and one in Turkey to understand the nature of the source in optical regime. The source was found to be active during the whole monitoring period and displayed significant flux variations in B, V, R, and I passbands. Variability amplitudes on intraday basis varied from 5.20 to 17.9 per cent. A close inspection of variability patterns during our observation cycle reveals simultaneity among optical emissions from all passbands. During the complete monitoring period, progressive increase in the amplitude of variability with frequency was detected for our target. The amplitudes of variability in B, V, R, and I passbands have been estimated to be 177 per cent, 172 per cent, 171 per cent, and 158 per cent, respectively. Using the structure function technique, we found intraday time-scales ranging from ∼23 min to about 115 min. We also studied colour–magnitude relationship and found indications of mild bluer-when-brighter trend on shorter time-scales. Spectral indices ranged from 2.3 to 3.0 with no clear trend on long-term basis. We have also generated spectral energy distributions for 3C 279 in optical B, V, R, and I passbands for 17 nights. Finally, possible emission mechanisms causing variability in blazars are discussed briefly.Fil: Agarwal, Aditi. Indian Institute of Astrophysics; IndiaFil: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaFil: Andruchow, Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Mammana, Luis Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaFil: Singh, Mridweeka. Aryabhatta Research Institute of Observational Sciences; IndiaFil: Anupama, G. C.. Indian Institute of Astrophysics; IndiaFil: Mihov, B.. Bulgarian Academy of Sciences; BulgariaFil: Raj, Ashish. Indian Institute of Astrophysics; IndiaFil: Slavcheva Mihova, L.. Bulgarian Academy of Sciences; BulgariaFil: Özdönmez, Aykut. Tübİtak National Observatory; TurquíaFil: Ege, Ergün. Istanbul University; TurquíaWiley Blackwell Publishing, Inc2019-07-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/130073Agarwal, Aditi; Cellone, Sergio Aldo; Andruchow, Ileana; Mammana, Luis Antonio; Singh, Mridweeka; et al.; Multiband optical variability of 3C 279 on diverse time-scales; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 488; 3; 22-7-2019; 4093-41050035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/488/3/4093/5536952?redirectedFrom=fulltextinfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz1981info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1908.01465v1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:54Zoai:ri.conicet.gov.ar:11336/130073instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:38:54.408CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Multiband optical variability of 3C 279 on diverse time-scales
title Multiband optical variability of 3C 279 on diverse time-scales
spellingShingle Multiband optical variability of 3C 279 on diverse time-scales
Agarwal, Aditi
BL LACERTAE OBJECTS: GENERAL
BL LACERTAE OBJECTS: INDIVIDUAL: 3C 279
GALAXIES: ACTIVE
QUASARS: INDIVIDUAL
title_short Multiband optical variability of 3C 279 on diverse time-scales
title_full Multiband optical variability of 3C 279 on diverse time-scales
title_fullStr Multiband optical variability of 3C 279 on diverse time-scales
title_full_unstemmed Multiband optical variability of 3C 279 on diverse time-scales
title_sort Multiband optical variability of 3C 279 on diverse time-scales
dc.creator.none.fl_str_mv Agarwal, Aditi
Cellone, Sergio Aldo
Andruchow, Ileana
Mammana, Luis Antonio
Singh, Mridweeka
Anupama, G. C.
Mihov, B.
Raj, Ashish
Slavcheva Mihova, L.
Özdönmez, Aykut
Ege, Ergün
author Agarwal, Aditi
author_facet Agarwal, Aditi
Cellone, Sergio Aldo
Andruchow, Ileana
Mammana, Luis Antonio
Singh, Mridweeka
Anupama, G. C.
Mihov, B.
Raj, Ashish
Slavcheva Mihova, L.
Özdönmez, Aykut
Ege, Ergün
author_role author
author2 Cellone, Sergio Aldo
Andruchow, Ileana
Mammana, Luis Antonio
Singh, Mridweeka
Anupama, G. C.
Mihov, B.
Raj, Ashish
Slavcheva Mihova, L.
Özdönmez, Aykut
Ege, Ergün
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BL LACERTAE OBJECTS: GENERAL
BL LACERTAE OBJECTS: INDIVIDUAL: 3C 279
GALAXIES: ACTIVE
QUASARS: INDIVIDUAL
topic BL LACERTAE OBJECTS: GENERAL
BL LACERTAE OBJECTS: INDIVIDUAL: 3C 279
GALAXIES: ACTIVE
QUASARS: INDIVIDUAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We have monitored the flat spectrum radio quasar, 3C 279, in the optical B, V, R, and I passbands from 2018 February to 2018 July for 24 nights, with a total of 716 frames, to study flux, colour, and spectral variability on diverse time-scales. 3C 279 was observed using seven different telescopes: two in India, two in Argentina, two in Bulgaria, and one in Turkey to understand the nature of the source in optical regime. The source was found to be active during the whole monitoring period and displayed significant flux variations in B, V, R, and I passbands. Variability amplitudes on intraday basis varied from 5.20 to 17.9 per cent. A close inspection of variability patterns during our observation cycle reveals simultaneity among optical emissions from all passbands. During the complete monitoring period, progressive increase in the amplitude of variability with frequency was detected for our target. The amplitudes of variability in B, V, R, and I passbands have been estimated to be 177 per cent, 172 per cent, 171 per cent, and 158 per cent, respectively. Using the structure function technique, we found intraday time-scales ranging from ∼23 min to about 115 min. We also studied colour–magnitude relationship and found indications of mild bluer-when-brighter trend on shorter time-scales. Spectral indices ranged from 2.3 to 3.0 with no clear trend on long-term basis. We have also generated spectral energy distributions for 3C 279 in optical B, V, R, and I passbands for 17 nights. Finally, possible emission mechanisms causing variability in blazars are discussed briefly.
Fil: Agarwal, Aditi. Indian Institute of Astrophysics; India
Fil: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
Fil: Andruchow, Ileana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Mammana, Luis Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentina
Fil: Singh, Mridweeka. Aryabhatta Research Institute of Observational Sciences; India
Fil: Anupama, G. C.. Indian Institute of Astrophysics; India
Fil: Mihov, B.. Bulgarian Academy of Sciences; Bulgaria
Fil: Raj, Ashish. Indian Institute of Astrophysics; India
Fil: Slavcheva Mihova, L.. Bulgarian Academy of Sciences; Bulgaria
Fil: Özdönmez, Aykut. Tübİtak National Observatory; Turquía
Fil: Ege, Ergün. Istanbul University; Turquía
description We have monitored the flat spectrum radio quasar, 3C 279, in the optical B, V, R, and I passbands from 2018 February to 2018 July for 24 nights, with a total of 716 frames, to study flux, colour, and spectral variability on diverse time-scales. 3C 279 was observed using seven different telescopes: two in India, two in Argentina, two in Bulgaria, and one in Turkey to understand the nature of the source in optical regime. The source was found to be active during the whole monitoring period and displayed significant flux variations in B, V, R, and I passbands. Variability amplitudes on intraday basis varied from 5.20 to 17.9 per cent. A close inspection of variability patterns during our observation cycle reveals simultaneity among optical emissions from all passbands. During the complete monitoring period, progressive increase in the amplitude of variability with frequency was detected for our target. The amplitudes of variability in B, V, R, and I passbands have been estimated to be 177 per cent, 172 per cent, 171 per cent, and 158 per cent, respectively. Using the structure function technique, we found intraday time-scales ranging from ∼23 min to about 115 min. We also studied colour–magnitude relationship and found indications of mild bluer-when-brighter trend on shorter time-scales. Spectral indices ranged from 2.3 to 3.0 with no clear trend on long-term basis. We have also generated spectral energy distributions for 3C 279 in optical B, V, R, and I passbands for 17 nights. Finally, possible emission mechanisms causing variability in blazars are discussed briefly.
publishDate 2019
dc.date.none.fl_str_mv 2019-07-22
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/130073
Agarwal, Aditi; Cellone, Sergio Aldo; Andruchow, Ileana; Mammana, Luis Antonio; Singh, Mridweeka; et al.; Multiband optical variability of 3C 279 on diverse time-scales; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 488; 3; 22-7-2019; 4093-4105
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/130073
identifier_str_mv Agarwal, Aditi; Cellone, Sergio Aldo; Andruchow, Ileana; Mammana, Luis Antonio; Singh, Mridweeka; et al.; Multiband optical variability of 3C 279 on diverse time-scales; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 488; 3; 22-7-2019; 4093-4105
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/488/3/4093/5536952?redirectedFrom=fulltext
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz1981
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1908.01465v1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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