X-rays from the Corona and Disc of AGN Andy Fabian

52 Pages·2015·7.42 MB·English

X-rays from the Corona and Disc of AGN
Andy Fabian
Institute of Astronomy
University of Cambridge
3C273

N = 0, 1020, 1022, 1024 cm−2
H
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2
−
m Opt UV X−ray
c

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10−4 10−3 0.01 0.1 1 10 100 1000
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Energy (keV)
N = 0, 1020, 1022, 1024 cm−2
H
0
1
−
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1 1
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0 DISK
e 1
k

1
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m Opt UV X−ray
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0 CORONA
( 1
2
V
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k
3
1
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10−4 10−3 0.01 0.1 1 10 100 1000
1
Energy (keV)

N = 0, 1020, 1022, 1024 cm−2
H
0
1
−
0
1
Effect of Galactic absorption
)
1 1
− 1
V −
0
e 1
k

1
−
s

2
−
m Opt UV X−ray
c

s
n
o
t
o
2
h 1
P −
0
( 1
2
V
e
k
3
1
−
0
10−4 10−3 0.01 0.1 1 10 100 1000
1
Energy (keV)
To observer
Direct Power-law
Corona

Accretion disc
(Quasi-blackbody emission in optical and
UV for AGN)
Corona is compact
Rapid variability
in AGN
MCG-6-30-15