IIA Institutional Repository

Intra-night optical variability monitoring of c-ray emitting blazars

Show simple item record

dc.contributor.author Pandian, K Subbu Ulaganatha
dc.contributor.author Natarajan, A
dc.contributor.author Stalin, C. S
dc.contributor.author Pandey, Ashwani
dc.contributor.author Muneer, S
dc.contributor.author Natarajan, B
dc.date.accessioned 2023-01-18T06:12:41Z
dc.date.available 2023-01-18T06:12:41Z
dc.date.issued 2022-12
dc.identifier.citation Journal of Astrophysics and Astronomy, Vol. 43, No. 2, 48 en_US
dc.identifier.issn 0973-7758
dc.identifier.uri http://hdl.handle.net/2248/8119
dc.description Restricted Access en_US
dc.description The original publication is available at springerlink.com
dc.description.abstract We present the results obtained from our campaign to characterize the intra-night optical variability properties of blazars detected by the Fermi large area telescope. This involves R-band monitoring observations of a sample of 18 blazars, which includes five flat spectrum radio quasars (FSRQs) and thirteen BL Lac objects (BL Lacs) covering the redshift range z ¼ 0:085 1:184. Our observations carried out using the 1.3m J. C. Bhattacharya telescope cover a total of 40 nights ( 200 h) between the period December 2016 and March 2020. We characterized variability using the power enhanced F-test. We found duty cycle (DC) variability of about 11% for FSRQs and 12% for BL Lacs. Dividing the sample into different sub-classes based on the position of the synchrotron peak in their broadband spectral energy distribution (SED), we found DC of 16%, 10% and 7% for low synchrotron peaked (LSP), intermediate synchrotron peaked (ISP) and high synchrotron peaked (HSP) blazars. Such high DC of variability in LSP blazars could be understood in the context of the R-band tracing the falling part (contributed by high energy electrons) of the synchrotron component of the broadband SED. Also, the R-band tracing the rising synchrotron part (produced by low energy electrons) in the case of ISP and HSP blazars, could cause lesser variability in them. Thus, the observed high DC of variability in LSP blazars relative to ISP and HSP blazars is in accordance with the leptonic model of emission from blazar jets. en_US
dc.language.iso en en_US
dc.publisher Indian Academy of Sciences en_US
dc.relation.uri https://doi.org/10.1007/s12036-022-09826-7
dc.rights © Indian Academy of Sciences
dc.subject Galaxies: active en_US
dc.subject Galaxies: jets en_US
dc.subject Quasars: general en_US
dc.title Intra-night optical variability monitoring of c-ray emitting blazars en_US
dc.type Article en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account