dc.contributor.author |
Agarwal, Aditi |
|
dc.contributor.author |
Mihov, B |
|
dc.contributor.author |
Andruchow, I |
|
dc.contributor.author |
Cellone, Sergio A |
|
dc.contributor.author |
Anupama, G. C |
|
dc.contributor.author |
Agrawal, V |
|
dc.contributor.author |
Zola, S |
|
dc.contributor.author |
Ergun Ege |
|
dc.contributor.author |
Özdönmez, Aykut |
|
dc.contributor.author |
Ege, Ergün |
|
dc.date.accessioned |
2022-07-06T09:31:59Z |
|
dc.date.available |
2022-07-06T09:31:59Z |
|
dc.date.issued |
2022-06 |
|
dc.identifier.citation |
Journal of Astrophysics and Astronomy, Vol. 43, No. 1, 9 |
en_US |
dc.identifier.issn |
0973-7758 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/7977 |
|
dc.description |
Restricted Access |
en_US |
dc.description |
The original publication is available at springerlink.com |
|
dc.description.abstract |
We study flux and spectral variability of the high energy peaked TeV blazar PG 1553 + 113 on
diverse timescales using the data collected from 2005 to 2019 which also includes the intensive intra-night
monitoring of the target. Additionally, we recorded the brightest flare of the blazar PG 1553 + 113 during
April 2019 when the source attained an R-band magnitude of 13.2. Analyzing the spectral evolution of the
source during the flare gave a clockwise spectral hysteresis loop and a time lag with V-band variations
leading to the R-band ones. Various statistical tests, fitting procedures and cross-correlation techniques are
applied to search for periodicity and examine the color-magnitude relationship. We find a median period of
(2.21 ± 0.04) years along with the secondary period of about 210 days. Finally, we briefly discuss various
physical mechanisms which are capable of explaining our findings. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Indian Academy of Sciences |
en_US |
dc.relation.uri |
https://doi.org/10.1007/s12036-021-09793-5 |
|
dc.rights |
© Indian Academy of Sciences |
|
dc.subject |
Active galaxies |
en_US |
dc.subject |
BL Lacertae objects |
en_US |
dc.subject |
PG 1553 + 113 |
en_US |
dc.title |
Optical flux and spectral characterization of the blazar PG 1553 + 113 based on the past 15 years of data |
en_US |
dc.type |
Article |
en_US |