TY - JOUR
T1 - Constraining the central engine of radio-loud AGNs
AU - Sambruna, Rita M.
AU - Eracleous, Michael
AU - Mushotzky, Richard F.
N1 - Funding Information:
This work was supported by NASA contract NAS-38252 and NASA grants NAG5-7276 and NAG5-7733.
PY - 2002
Y1 - 2002
N2 - We present an X-ray spectral survey of radio-loud (RL) AGNs using ASCA and RXTE. The goal was to study the structure of their central engines and compare it to that of their radio-quiet (RQ) counterparts. We find systematic differences in the X-ray properties of the two AGN classes. Specifically, RL AGNs exhibit weaker Fe lines and reflection components than RQ AGNs, indicating smaller solid angles subtended by the re-processing medium to the X-ray source. The circumnuclear environs of RL and RQ AGNs also differ: large amounts of cold gas are detected in Broad Line Radio Galaxies and Quasars, contrary to what is found in Seyfert galaxies of similar X-ray luminosity. We also discuss ASCA observations of Weak Line Radio Galaxies, a distinct subset of radio galaxies which may harbor a low-luminosity AGN powered by an advection-dominated accretion flow.
AB - We present an X-ray spectral survey of radio-loud (RL) AGNs using ASCA and RXTE. The goal was to study the structure of their central engines and compare it to that of their radio-quiet (RQ) counterparts. We find systematic differences in the X-ray properties of the two AGN classes. Specifically, RL AGNs exhibit weaker Fe lines and reflection components than RQ AGNs, indicating smaller solid angles subtended by the re-processing medium to the X-ray source. The circumnuclear environs of RL and RQ AGNs also differ: large amounts of cold gas are detected in Broad Line Radio Galaxies and Quasars, contrary to what is found in Seyfert galaxies of similar X-ray luminosity. We also discuss ASCA observations of Weak Line Radio Galaxies, a distinct subset of radio galaxies which may harbor a low-luminosity AGN powered by an advection-dominated accretion flow.
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U2 - 10.1016/S1387-6473(01)00183-X
DO - 10.1016/S1387-6473(01)00183-X
M3 - Short survey
AN - SCOPUS:0036221010
SN - 1387-6473
VL - 46
SP - 215
EP - 220
JO - New Astronomy Reviews
JF - New Astronomy Reviews
IS - 2-7
ER -