66 citations · 189 across the 16 of their papers we have counts for
6 papers · 1 filter
Local and Large scale Environment of Seyfert Galaxies
E. Koulouridis, M. Plionis, V. Chavushyan +3
We present a three-dimensional study of the local (<100 h^-1} kpc) and the large scale (<1 h^{-1} Mpc) environment of the two main types of Seyfert AGN galaxies. For this purpose w…
Dust and the far-UV spectral energy distribution of quasars
Luc Binette, Yair Krongold, Gladis Magris Crestini +1
The spectral energy distribution of quasars shows a sharp steepening of the continuum shortward of ~ 1100 A. We present a new dust extinction model consisting of crystalline carbon…
Nanodiamond dust and the far-ultraviolet quasar break
L. Binette, G. Magris C., Y. Krongold +5
We explore the possibility that the steepening observed shortward of 1000A in the energy distribution of quasars may result from absorption by dust, being either intrinsic to the q…
Probing the Local Group Medium Toward Mkn 421 with Chandra and FUSE
Rik J. Williams, Smita Mathur, Fabrizio Nicastro +7
We report the detection of highly-ionized gas at z~0 seen in resonant UV and X-ray absorption lines toward the z=0.03 blazar Mkn 421. A total of 13 X-ray and 3 UV lines were measur…
Chandra Detection of the First X-ray Forest along the Line of Sight To Mkn 421
Fabrizio Nicastro, Smita Mathur, Martin Elvis +7
We present the first >=3.5 sigma (conservative) or >=5.8 sigma (sum of lines significance) detection of two Warm-Hot Intergalactic Medium (WHIM) filaments at z>0, which we find alo…
Super-solar Metallicity in the NLS1 Galaxy Markarian 1044
Dale L. Fields, Smita Mathur, Richard W. Pogge +3
The determination of the bulk metallicity and the abundance mixture of various elements is very difficult in quasars and AGNs because only a few lines are observed and the ionizati…