ChandraX‐Ray Observations of NGC 4258: Iron Absorption Lines from the Nucleus

2004 ◽  
Vol 601 (1) ◽  
pp. 133-141 ◽  
Author(s):  
A. J. Young ◽  
A. S. Wilson
2020 ◽  
Vol 498 (1) ◽  
pp. L140-L144 ◽  
Author(s):  
M L Parker ◽  
G A Matzeu ◽  
W N Alston ◽  
A C Fabian ◽  
A Lobban ◽  
...  

ABSTRACT We present joint NuSTAR and XMM–Newton observations of the bright, variable quasar IRAS 13349+2438. This combined data set shows two clear iron absorption lines at 8 and 9 keV, which are most likely associated with two layers of mildly relativistic blueshifted absorption, with velocities of ∼0.14c and ∼0.27c. We also find strong evidence for a series of Ly α absorption lines at intermediate energies in a stacked XMM–Newton EPIC-pn spectrum, at the same blueshift as the lower velocity iron feature. This is consistent with a scenario where an outflowing wind is radially stratified, so faster, higher ionization material is observed closer to the black hole, and cooler, slower material is seen from streamlines at larger radii.


1983 ◽  
Vol 269 ◽  
pp. L5 ◽  
Author(s):  
C.-C. Wu ◽  
M. Leventhal ◽  
C. L. Sarazin ◽  
T. R. Gull

2005 ◽  
Vol 630 (2) ◽  
pp. L129-L132 ◽  
Author(s):  
G. Risaliti ◽  
S. Bianchi ◽  
G. Matt ◽  
A. Baldi ◽  
M. Elvis ◽  
...  

2007 ◽  
Vol 59 (sp1) ◽  
pp. S185-S198 ◽  
Author(s):  
Aya Kubota ◽  
Tadayasu Dotani ◽  
Jean Cottam ◽  
Taro Kotani ◽  
Chris Done ◽  
...  

2001 ◽  
Vol 120 (5) ◽  
pp. A678-A679
Author(s):  
G ANDERSON ◽  
S WILKINS ◽  
T MURPHY ◽  
G CLEGHORN ◽  
D FRAZER

1964 ◽  
Vol 46 (4) ◽  
pp. 421-423 ◽  
Author(s):  
Ward D. Noyes ◽  
Paul H. Jordan
Keyword(s):  

1964 ◽  
Vol 46 (6) ◽  
pp. 651-661 ◽  
Author(s):  
Mortimer S. Greenberg ◽  
Georg Strohmeyer ◽  
Gerald J. Hine ◽  
Willis R. Keene ◽  
George Curtis ◽  
...  
Keyword(s):  

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