Photopolarimetry of Bl-Lacertae

Details Photopolarimetry of Bl-Lacertae Photopolarimetry of Bl-Lacertae

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.206...55s&link_type=abstract

Astrophysics and Space Science, Volume 206, Issue 1, pp.55-70

Astronomy and Astrophysics

Astrophysics

9

Scientific paper

This paper presents results of our monitoring of BL Lac at the 2.56 m Nordic Optical Telescope in La Palma and at the 0.91 m telescope at National Astronomical Observatory in Dodaira, Japan. On La Palma we used aUBVRI-photopolarimeter which gives truly simultaneous observations in all five colour bands. At Dodaira we used a photopolarimeter which gives simultaneously photometry atB, V andR-bands and polarimetry atV-band. We have observations of BL Lac during flare behaviour and during these times we have observed a clear rotation of the polarization position angle. During these flares the polarization level has also been strongly variable and the object has lost its preferred direction of the polarization position angle. The reason for this behaviour remains still unclear, but there are two possible explanations: shocks in the helical magnetic field in the jet pointing nearly towards us or polarized synchrotron flares rotating within the accretion disk (seen nearly face on) of the supermassive central black hole.

Affiliated with

Also associated with

No associations

Rating

Photopolarimetry of Bl-Lacertae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Photopolarimetry of Bl-Lacertae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photopolarimetry of Bl-Lacertae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1490943