Mathematics – Logic
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.2001b&link_type=abstract
American Astronomical Society, 185th AAS Meeting, #20.01; Bulletin of the American Astronomical Society, Vol. 26, p.1342
Mathematics
Logic
1
Scientific paper
In our ongoing project to survey nearby AGN's for H_2O maser emission, we have recently discovered 3 new H_2O megamaser sources with the Parkes 64-m telescope. They are NGC 1386, ESO 103--G35, and IC 2560. To date, this project has provided 8 new sources to the list of H_2O megamasers, which now numbers 13 in all. We have begun to accumulate various morphological, photometric, and geometric data for all of the sources in our sample ( ~ 250 in total), and by comparing properties of the general sample population with those of the H_2O megamaser population, we are beginning to uncover several intriguing trends. The H_2O megamaser sources seem to prefer active galaxies with heavily obscured nuclei (Seyfert 2 galaxies and obscured LINERs), and they may also prefer sources with inclined galactic disks. Several of the megamaser sources have been found to have extremely large column densities based on X-ray spectra. Recent studies of the physical conditions of near-nuclear molecular gas in AGN's suggests that H_2O megamasers should be common in molecular gas near the powerful X-ray sources in the AGN's. Nevertheless, only about 6% of these sources have observable emission. We will present several possibilities to explain the apparent deficit.
Braatz James A.
Henkel Carsten
Wilson Andrew S.
No associations
LandOfFree
H_2O Megamasers as Probes of Molecular Gas in AGN's 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 H_2O Megamasers as Probes of Molecular Gas in AGN's, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and H_2O Megamasers as Probes of Molecular Gas in AGN's will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1318937