POLARIMETRIC RESULTS OF B2 1308+326
ATel #15930; Jincen Jose, Suvendu Rakshit, Shivangi Pandey (ARIES), Amitesh Omar (IIT Kanpur)
on 6 Mar 2023; 08:50 UT
Credential Certification: Suvendu Rakshit (suvenduat@gmail.com)
Subjects: Optical, AGN, Blazar
Referred to by ATel #: 15931
Authors: Jincen Jose, Suvendu Rakshit, Shivangi Pandey (ARIES), Amitesh Omar (IIT Kanpur)
The blazar B2 1308+326 (ICRS coords. (ep=J2000): RA 13 10 28.664 Dec +32 20 43.774, (z=0.996)) has been noted to undergo optical variability in recent years (reported R-mag; ATel #15441; ATel #15447; ATel #15515; ATel #15895).
At MJD = 59976.0975 (2023-02-09) Atel #15895, reported that value was R=13.757 +/- 0.004.
Then, on 2023-02-17, we performed an imaging-polarimetric observation of the blazar. The results are shown below.
__________________________________
| MJD | r- mag | error(mag)|
|---------------------------------|
|59988.19476 | 14.047 | 0.017 |
|59988.19895 | 13.904 | 0.017 |
|_________________________________|
______________________________________________
| MJD | p (%) | PA (deg) |
|----------------------------|----------------|
| 59988.19 | 17.121 +- 0.002 | 54.36 +- 0.41 |
|_____________________________________________|
note: no correction over the degree of polarisation was done.
The observation was carried out under instrument verification observations using a polarimeter setup under commissioning in the ARIES Devasthal Faint Object Spectrograph and Camera (ADFOSC; Omar et al. 2019 current science 116 1472) at 3.6-meter Devsthal Optical Telescope of ARIES, Nainital, India. Partial support of SRG-SERB, DST, New Delhi through SRG grant number SRG/2021/001334 is acknowledged.
