[ITAL]Chandra[/ITAL] Observations of the X-Ray Narrow-Line Region in NGC 4151

2000 ◽  
Vol 545 (2) ◽  
pp. L81-L84 ◽  
Author(s):  
P. M. Ogle ◽  
H. L Marshall ◽  
J. C. Lee ◽  
C. R. Canizares
Keyword(s):  
Narrow Line ◽  
X Ray ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region

scholarly journals A Separation of Systematic and Turbulent Motions in the Narrow-Line Region of NGC 4151

1989 ◽  
Vol 134 ◽  
pp. 352-354
Author(s):  
Hartmut Schulz ◽  
Berto Boer
Keyword(s):  
Radio Source ◽  
Galactic Disk ◽  
Narrow Line ◽  
Line Profiles ◽  
X Ray ◽  
Ngc 4151 ◽  
Spatially Resolved ◽  
Line Region ◽  
Bulk Motion ◽  
Narrow Line Region

Line profiles from the spatially resolved narrow-line region of NGC 4151 are separated into several bulk-motion components which show velocity dispersions two to three times larger than starburst nuclei with similar luminosity. The components are suggested to arise within the galactic disk and by filaments entrained in or situated along the shells of two super-bubbles. The large cone-like SW bubble is able to account for the SW soft-X ray excess and the hole in the NLR disk through which a UV-radiation cone emerges. The bubbles appear to be related to the nuclear radio source.

High-Velocity Line Emission in the Narrow-Line Region of NGC 4151

1999 ◽  
Vol 118 (5) ◽  
pp. 2101-2107 ◽  
Author(s):  
J. B. Hutchings ◽  
D. M. Crenshaw ◽  
A. C. Danks ◽  
T. R. Gull ◽  
S. B. Kraemer ◽  
...  
Keyword(s):  
High Velocity ◽  
Line Emission ◽  
Narrow Line ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region

Subaru High-Dispersion Spectroscopy of the Narrow-Line Region in the Seyfert Galaxy NGC 4151

2003 ◽  
Vol 126 (3) ◽  
pp. 1167-1182 ◽  
Author(s):  
Tohru Nagao ◽  
Takashi Murayama ◽  
Yasuhiro Shioya ◽  
Yoshiaki Taniguchi
Keyword(s):  
Seyfert Galaxy ◽  
High Dispersion ◽  
Narrow Line ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region

scholarly journals Probing the Ionization Structure of the Narrow‐Line Region in the Seyfert 1 Galaxy NGC 4151

2008 ◽  
Vol 679 (2) ◽  
pp. 1128-1143 ◽  
Author(s):  
S. B. Kraemer ◽  
H. R. Schmitt ◽  
D. M. Crenshaw
Keyword(s):  
Narrow Line ◽  
Ngc 4151 ◽  
Ionization Structure ◽  
Line Region ◽  
Narrow Line Region

Space Telescope Imaging Spectrograph Long‐Slit Spectroscopy of the Narrow‐Line Region of NGC 4151. II. Physical Conditions along Position Angle 221o

2000 ◽  
Vol 531 (1) ◽  
pp. 278-295 ◽  
Author(s):  
S. B. Kraemer ◽  
D. M. Crenshaw ◽  
J. B. Hutchings ◽  
T. R. Gull ◽  
M. E. Kaiser ◽  
...  
Keyword(s):  
Position Angle ◽  
Narrow Line ◽  
Space Telescope ◽  
Physical Conditions ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region ◽  
Imaging Spectrograph

scholarly journals Change in the Warm Absorber in MR 2251-178

1998 ◽  
Vol 188 ◽  
pp. 436-437
Author(s):  
C. Otani ◽  
T. Kii ◽  
K. Miya
Keyword(s):  
Absorption Edge ◽  
Lower Energy ◽  
Intensity Change ◽  
Narrow Line ◽  
X Ray ◽  
Line Region ◽  
Narrow Line Region ◽  
Edge Features ◽  
The Stability ◽  
Bright Phase

We report the results of the search for the change in the warm absorber of the quasar MR 2251-178 with ASCA. We detected its change along with the X-ray intensity change. In the bright phase in 1993, its X-ray spectra showed the absorption edge features by OVII and OVIII edges. In contrast, in the medium intensity (in 1996), the absorption apparently increased and the edge energy was shifted to the lower energy. These results are well explained by the ionization change of the same absorber. The timescale of the change requires moderately high density and the location to be nearer to the center than the Narrow Line Region. We briefly discuss the stability of the warm absorber.

Kinematics and Morphology of the Resolved Narrow Line Region in NGC 4151

2000 ◽  
pp. 431-434
Author(s):  
M. E. Kaiser ◽  
L. D. Bradley ◽  
J. B. Hutchings ◽  
D. M. Crenshaw ◽  
S. B. Kraemer ◽  
...  
Keyword(s):  
Narrow Line ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region
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