Optical Identification of Joint EUVE and ROSAT Detections in the Southern Hemisphere: Soft Active Galactic Nuclei.

1997 ◽  
Vol 114 ◽  
pp. 1356 ◽  
Author(s):  
Nahide Craig ◽  
Antonella Fruscione
Keyword(s):  
Active Galactic Nuclei ◽  
Southern Hemisphere ◽  
Galactic Nuclei ◽  
Optical Identification

scholarly journals The Southern Hemisphere VLBI Experiment (Sheve)

1984 ◽  
Vol 110 ◽  
pp. 67-69
Author(s):  
R.A. Preston ◽  
D.L. Jauncey ◽  
A. Tsioumis ◽  
D.L. Meier ◽  
L.J. Skjerve ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
South African ◽  
Southern Hemisphere ◽  
Galactic Center ◽  
Galactic Nuclei ◽  
Active Galaxy ◽  
Vela Pulsar ◽  
Centaurus A

The Southern Hemisphere VLBI Experiment (or SHEVE) was a joint US-Australian-South African venture with both astronomy and geodesy goals. The principle astronomy goal was to make models or maps of the following sources: at 2.3 GHz (with six antennas and 9 usable baselines) – Centaurus A (the nearest active galaxy), Circinus X-1 (a flaring binary), the VELA pulsar, and 26 other active galactic nuclei and quasars; at 8.4 GHz (only one baseline) – Centaurus A and the galactic center.

scholarly journals A Search for Very High Energy Gamma Rays from Active Galactic Nuclei Visible from the Southern Hemisphere

1999 ◽  
Vol 521 (2) ◽  
pp. 547-551 ◽  
Author(s):  
P. M. Chadwick ◽  
K. Lyons ◽  
T. J. L. McComb ◽  
K. J. Orford ◽  
J. L. Osborne ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Southern Hemisphere ◽  
Gamma Rays ◽  
Galactic Nuclei ◽  
High Energy ◽  
High Energy Gamma ◽  
Very High Energy ◽  
Energy Gamma ◽  
Very High

scholarly journals Optical Identification of the ASCA Medium Sensitivity Survey in the Northern Sky: Nature of Hard X‐Ray–Selected Luminous Active Galactic Nuclei

2003 ◽  
Vol 148 (2) ◽  
pp. 275-315 ◽  
Author(s):  
Masayuki Akiyama ◽  
Yoshihiro Ueda ◽  
Kouji Ohta ◽  
Tadayuki Takahashi ◽  
Toru Yamada
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Optical Identification ◽  
X Ray

scholarly journals Optical Identification of Candidates for Active Galactic Nuclei Detected by the Mikhail Pavlinsky ART-XC Telescope Onboard the SRG Observatory during an All-Sky X-ray Survey

2021 ◽  
Vol 47 (2) ◽  
pp. 71-87
Author(s):  
I. A. Zaznobin ◽  
G. S. Uskov ◽  
S. Yu. Sazonov ◽  
R. A. Burenin ◽  
P. S. Medvedev ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Optical Identification ◽  
X Ray

INVESTIGATION OF INTRADAY VARIABILITY OF ACTIVE GALACTIC NUCLEI IN OPTICAL AND RADIO RANGES

2010 ◽  
Vol 1 (2) ◽  
pp. 111-115
Author(s):  
O. E. Volvach ◽  
L. N. Volvach ◽  
V. S. Bichkova ◽  
M. S. Kardashev ◽  
M. G. Larionov ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Intraday Variability

Hubble Space Telescopeand Ground‐based Observations of I Zw 1 and MRK 486 and the Variability of Polarization in Radio‐quiet Active Galactic Nuclei

1997 ◽  
Vol 488 (1) ◽  
pp. 202-215 ◽  
Author(s):  
Paul S. Smith ◽  
Gary D. Schmidt ◽  
Richard G. Allen ◽  
Dean C. Hines
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei

Polarization Variability of Active Galactic Nuclei and X‐Ray Binaries

1997 ◽  
Vol 487 (1) ◽  
pp. 142-152 ◽  
Author(s):  
Gang Bao ◽  
Petr Hadrava ◽  
Paul J. Wiita ◽  
Ying Xiong
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
X Ray ◽  
X Ray Binaries
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