NGC-1068 - A GENUINE HIDDEN SEYFERT-1 GALAXY

Authors
JOURDAIN E COLLIN S DENNEFELD M BALLET J ROQUES JP LEBRUN F MANDROU P CORDIER B FINOGUENOV A CHURAZOF E GILFANOV M SUNYAEV R KULESHOVA N SHEIKHET A SUKHANOV K TSERENIN I
Citation
E. Jourdain et al., NGC-1068 - A GENUINE HIDDEN SEYFERT-1 GALAXY, Astronomy and astrophysics, 281(2), 1994, pp. 57-60
Citations number
28
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
281
Issue
2
Year of publication
1994
Pages
57 - 60
Database
ISI
SICI code
0004-6361(1994)281:2<57:N-AGHS>2.0.ZU;2-W
Abstract
An observation performed by the SIGMA experiment on board the GRANAT s atellite has given a negative result for the detection of hard X-rays from the Seyfert galaxy NGC 1068. We discuss the implications of this result for the ''Unified Scheme'' of Active Galactic Nuclei and for th is galaxy in particular. It imposes conditions on the absorbing materi al, if one assumes that a typical Seyfert 1 hard X-ray continuum is in deed hidden in the nucleus.