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dc.contributor.author
Agarwal, Aditi
dc.contributor.author
Cellone, Sergio Aldo
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Andruchow, Ileana
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Mammana, Luis Antonio
dc.contributor.author
Singh, Mridweeka
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Anupama, G. C.
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Mihov, B.
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Raj, Ashish
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Slavcheva Mihova, L.
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Özdönmez, Aykut
dc.contributor.author
Ege, Ergün
dc.date.available
2021-04-15T03:12:51Z
dc.date.issued
2019-07-22
dc.identifier.citation
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
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/130073
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BL LACERTAE OBJECTS: GENERAL
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BL LACERTAE OBJECTS: INDIVIDUAL: 3C 279
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GALAXIES: ACTIVE
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QUASARS: INDIVIDUAL
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Multiband optical variability of 3C 279 on diverse time-scales
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-19T21:58:47Z
dc.journal.volume
488
dc.journal.number
3
dc.journal.pagination
4093-4105
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Agarwal, Aditi. Indian Institute of Astrophysics; India
dc.description.fil
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
dc.description.fil
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
dc.description.fil
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
dc.description.fil
Fil: Singh, Mridweeka. Aryabhatta Research Institute of Observational Sciences; India
dc.description.fil
Fil: Anupama, G. C.. Indian Institute of Astrophysics; India
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Fil: Mihov, B.. Bulgarian Academy of Sciences; Bulgaria
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Fil: Raj, Ashish. Indian Institute of Astrophysics; India
dc.description.fil
Fil: Slavcheva Mihova, L.. Bulgarian Academy of Sciences; Bulgaria
dc.description.fil
Fil: Özdönmez, Aykut. Tübİtak National Observatory; Turquía
dc.description.fil
Fil: Ege, Ergün. Istanbul University; Turquía
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/488/3/4093/5536952?redirectedFrom=fulltext
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stz1981
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1908.01465v1
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