Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Deo, Rajesh"'
Autor:
Deo, Rajesh Narayan1 (AUTHOR) rndeo.nitc@gmail.com, Shrivastava, Ashish2 (AUTHOR) rewa.ashish@gmail.com, Chatterjee, Kalyan1 (AUTHOR) kalyanbit@yahoo.co.in
Publikováno v:
Expert Systems. Jul2023, Vol. 40 Issue 6, p1-17. 17p.
Autor:
Deo, Rajesh
Publikováno v:
Physics and Astronomy Dissertations.
We present a detailed study of mid-infrared spectroscopy and optical imaging of Seyfert galaxies with the goal of understanding the properties of astronomical dust around the central supermassive black hole and the accretion disk. Specifically, we ha
Externí odkaz:
http://digitalarchive.gsu.edu/phy_astr_diss/18
http://digitalarchive.gsu.edu/cgi/viewcontent.cgi?article=1017&context=phy_astr_diss
http://digitalarchive.gsu.edu/cgi/viewcontent.cgi?article=1017&context=phy_astr_diss
Autor:
Kruczek, Nicholas E., Richards, Gordon T., Gallagher, S. C., Deo, Rajesh P., Hall, Patrick B., Hewett, Paul C., Leighly, Karen M., Krawczyk, Coleman M., Proga, Daniel
Publikováno v:
Astron.J.142:130-141,2011
In the restframe UV, two of the parameters that best characterize the range of emission-line properties in quasar broad emission-line regions are the equivalent width and the blueshift of the CIV line relative to the quasar rest frame. We explore the
Externí odkaz:
http://arxiv.org/abs/1109.1515
Autor:
Deo, Rajesh P., Richards, Gordon T., Nikutta, Robert, Elitzur, Moshe, Gallagher, Sarah C., Ivezic, Zeljko, Hines, Dean
We present Spitzer infrared spectra and ultra-violet to mid-infrared spectral energy distributions (SEDs) of 25 luminous type 1 quasars at z \sim 2. In general, the spectra show a bump peaking around 3 {\mu}m, and the 10 {\mu}m silicate emission feat
Externí odkaz:
http://arxiv.org/abs/1101.2855
Autor:
Richards, Gordon T., Kruczek, Nicholas E., Gallagher, S. C., Hall, Patrick B., Hewett, Paul C., Leighly, Karen M., Deo, Rajesh P., Kratzer, Rachael M., Shen, Yue
Publikováno v:
Astron.J.141:167-183,2011
Using a sample of 30,000 quasars from SDSS-DR7, we explore the range of properties exhibited by high-ionization, broad emission lines, such as CIV 1549. Specifically we investigate the anti-correlation between L_UV and emission line EQW (the Baldwin
Externí odkaz:
http://arxiv.org/abs/1011.2282
An analysis of archival mid-infrared (mid-IR) spectra of Seyfert galaxies from the Spitzer Space Telescope observations is presented. We characterize the nature of the mid-IR active nuclear continuum by subtracting a template starburst spectrum from
Externí odkaz:
http://arxiv.org/abs/0910.1614
Publikováno v:
IETE Journal of Research; Mar2024, Vol. 70 Issue 3, p2962-2973, 12p
Autor:
Richards, Gordon T., Deo, Rajesh P., Lacy, Mark, Myers, Adam D., Nichol, Robert C., Zakamska, Nadia L., Brunner, Robert J., Brandt, W. N., Gray, Alexander G., Parejko, John K., Ptak, Andrew, Schneider, Donald P., Storrie-Lombardi, Lisa J., Szalay, Alexander S.
Publikováno v:
Astron.J.137:3884,2009
We explore the multidimensional, multiwavelength selection of quasars from mid-IR (MIR) plus optical data, specifically from Spitzer-IRAC and the Sloan Digital Sky Survey (SDSS). We apply modern statistical techniques to combined Spitzer MIR and SDSS
Externí odkaz:
http://arxiv.org/abs/0810.3567
Autor:
Dunn, Jay P., Jackson, Brian, Deo, Rajesh P., Farrington, Chris, Das, Varendra, Crenshaw, D. Michael
Using the Multimission Archives at Space Telescope (MAST), we have extracted spectra and determined continuum light curves for 175 Seyfert Galaxies that have been observed with the International Ultraviolet Explorer (IUE) and the Faint Object Spectro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603800
Autor:
Collins, Nicholas R., Kraemer, Steven B., Crenshaw, D. Michael, Ruiz, Jose, Deo, Rajesh, Bruhweiler, Frederick C.
Publikováno v:
Astrophys.J. 619 (2005) 116-133
We use Hubble Space Telescope/Space Telescope Imaging Spectrograph (HST/STIS) longslit low-resolution spectroscopy from 1150A to 10,300A to study the physical conditions in the narrow-line region (NLR) of the Seyfert 2 galaxy Markarian 3. We find fro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409487