Spectroscopic monitoring of the Blazar 3C 454.3

Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2 pages, 2 figures, ASPC (Proceeding Accretion and Ejection in AGN: A Global View)

Scientific paper

We performed an optical spectroscopic monitoring of the blazar 3C 454.3 from September 2003 to July 2008. Sixteen optical spectra were obtained during different runs, which constitute the first spectroscopic monitoring done in the rest-frame UV region (z=0.859). An overall flux variation of the MgII (2800 A) by a factor ~ 3 was observed, while the corresponding UV continuum (F_cont at 3000 A) changed by a factor ~ 14. The MgII emission lines respond proportionally to the continuum variations when the source is in a low-activity state. In contrast, near the optical outbursts detected in 2005 and 2007, the MgII emission lines showed little response to the continuum flux variations. During the monitored period the UV FeII flux changed by a factor ~ 6 and correlated with F_cont (r = 0.92). A negative correlation between EW(Mg II) and F_cont was found, i.e. the so-called "Intrinsic Baldwin Effect".

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Spectroscopic monitoring of the Blazar 3C 454.3 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 Spectroscopic monitoring of the Blazar 3C 454.3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic monitoring of the Blazar 3C 454.3 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-26595

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.