Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...292...67h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 292, no. 1, p. 67-75
Astronomy and Astrophysics
Astronomy
6
Galactic Nuclei, Infrared Astronomy, Infrared Spectra, Near Infrared Radiation, Seyfert Galaxies, Variability, X Ray Sources, Brightness, Extremely High Frequencies, Light Curve, Photometry, Temporal Resolution, Time Measurement
Scientific paper
We present new time-resolved photometric observations and images at 2.2 microns of a small sample of X-ray variable Seyfert 1 nuclei. After correcting for dilution by the host galaxy in the observing aperture, we compare the fractional variation, over the timescales of the observations, in the near-infrared (NIR) to that expected in the X rays. We have not detected with confidence any NIR variability on timescales short enough to be incompatible with the dust reradiation scenario. The galaxy-corrected upper limits which we have obtained for variations on short timescales, typical of non-thermal processes, imply that the NIR emission is dominated by a slowly varying, presumably reprocessed, component which accounts for no less than 80%-90% of the total.
Hunt Leslie K.
Mannucci Filippo
Salvati Marco
Stanga R. M.
Zhekov Svet
No associations
LandOfFree
Limits on the short-timescale near-infrared variability of Seyfert 1 nuclei 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 Limits on the short-timescale near-infrared variability of Seyfert 1 nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limits on the short-timescale near-infrared variability of Seyfert 1 nuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1317539