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Radio Astronomy Kraus
An Introduction to Radio Astronomy Burke & Graham-Smith
Radio Images of Planets de Pater, ARAA, 28, 347 (1990)
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Kraus Radio Astronomy
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=
==
b
Sb
S
Tc
k
dTc
kdBS
2
2
2
2
2
2
0.00160.25180
3.5x104900300
58600
0.75200
920160
7x1059006000
[Jy] @ 8 GHz
[arcsec]
[K]
4
6000 K
0.3 GHz
Kraus Radio Astronomy
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6
17GHz
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Tb6000 K 106 K
Zirin et al. (1991)
106
K
8
log
P
log
2 P
1= xconstant
0 =P
106 K
6000 K
< 1GHzTb=10
4-6 K
> 10GHzTb=6000-10
4 K
9
106 K
6000 K
< 1GHz
> 10GHz
10
106 K
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1992/11/2104 K
109 K
12
MH
z
1000kms-1
Kraus Radio Astronomy
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F
Tl
F= l T
r
R
r
T
Ll
2
24
rR
LF
=
424 Trl =
( ) 41
2
1
4
1
16 LRT=
[K] 11
3004
1
2
1
=
OL
L
AU
RT
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1cmcm
1c
m
cm
k < 0.1 [Wm-1K-1] cf. k ~ 100
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Baars (1973)
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Baars (1973)
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167179.4152.4
137149.3133.0
134.1
126.9
60
206206.8194.3
294367.1446.0
150 GHz90.0 GHz
31.4 GHz
Ulich (1981)
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de Pater (1991)
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de Pater (1991)
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1.
2.
3.
< 3cm
Kraus Radio Astronomy
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de Pater (1990)
2 cm = 15 GHz
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5 GHz
1.46 GHz
333 MHz
de Pater (1991)
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1.4 x 10-3 T
10 MeV
( )
=
c
Fcm
BqP
0
3
8
3
2
4
3
m
eBc =
= 1GHz ~ 10 MeV
NRAO homepage
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10-3 sec
106 Jy
25
30 MHz
Kraus Radio Astronomy
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Kraus Radio Astronomy
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Kraus Radio Astronomy
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Kraus Radio Astronomy