ISO observations of the BL Lac object PKS 2155-304

Details ISO observations of the BL Lac object PKS 2155-304 ISO observations of the BL Lac object PKS 2155-304

1999-08-06

arxiv.org/abs/astro-ph/9908069v1

Astronomy and Astrophysics

Astrophysics

2 pages, 4 figures, contributed paper at the OJ-94 annual meeting, Torino, Italy, May 19-21, 1999

Scientific paper

The Infrared Space Observatory (ISO) observed the BL Lac object PKS 2155-304 16 times from 1996, May 7 to June 8, with both the ISOCAM camera and the ISOPHOT photometer, as part of a more general multiwavelength campaign. Two additional observations were performed on 1996, November 23 and 1997, May 15. This is the first time that there are simultaneous mid and far infrared data in a multiwavelength monitoring of a BL Lac object. We obtained four light curves at 4.0, 14.3, 60 and 90 microns, and a broad-band filter spectrum from 2.8 to 170 micron. No variability was detected in the infrared, although the source was varying at shorter wavelengths. The IR spectrum can be fitted by a single power law with an energy spectral index alfa = 0.40 +/- 0.06 and it can be explained as due to synchrotron emission only, with no noticeable contributions from thermal sources. Using the simultaneous data, we constructed the SED of PKS 2155-304.

Affiliated with

Also associated with

No associations

Rating

ISO observations of the BL Lac object PKS 2155-304 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 ISO observations of the BL Lac object PKS 2155-304, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ISO observations of the BL Lac object PKS 2155-304 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-75359