X-rays from Saturn: a study with XMM-Newton and Chandra over the years 2002–05

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Table 3:

Planetary parameters relevant to auroral studies.
Planet	Average solar	Rotation	Equatorial	Surface	Magnetic	FUV aurora	X-ray aurora	Disk X-ray	Magnetospheric
	distance	period	radius	magnetic field	moment	average input	total average	average	ions max.
	(AU)^a	(h)^a	(Earth = 1)^a,b	(G)^a	(Earth = 1)^a	power (GW)^c	power (MW)^d	power (MW)	density (cm $^{\rm -3}$ )^a

Earth	1.0	23.9	1	0.31	1	1-100	10-30	40^d	1-4000
Jupiter	5.2	9.9	11.2	4.28	20 000	few $\times$ 10⁴	400-1000	500-2000^d	>3000
Saturn	9.6	10.7	9.4	0.22	600	10²-10³	?	$\leq$ 230^e	100?
Uranus	19.2	17.2	4.0	0.23	50	$\la$ 40^f	?	?	3
Neptune	30.1	16.1	3.9	0.14	25	$\la$ 0.1^f	?	?	2

Notes. ^(a) From The New Solar System, ed. J. K. Beatty, C. Collins Petersen, & A. Chaikin 1999 (Cambridge University Press). ^(b) For the outer planets, radius at 1 bar atmospheric pressure. ^(c) Clarke et al. (2005). ^(d) Bhardwaj et al. (2007). ^(e) This paper. ^(f) Bhardwaj & Gladstone (2000).

Source LaTeX | All tables | In the text

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