Table 1: Parameters for some "Hot Jupiters''. The values used for the calculation of the magnetic moments are given in units normalized to Jupiter. The lower part shows the scaling results for a stellar system of 4.6 Gyr age: planetary dipole moment, total emitted radio power, radio flux at 1 AU from the planet, radio flux at Earth (distance s) and maximum frequency. Values calculated for Jupiter are given for comparison. Sources of parameters: ^(a) Burrows et al. (2003), ^(b) Konacki et al. (2003), ^(c) Melo et al. (2004), ^(d) Moutou et al. (2004), ^(e) Leigh et al. (2003), ^(f) Cody & Sasselov (2002), ^(g) Torres et al. (2004), ^(h) Bouchy et al. (2004). See text for details.
Jupiter HD 209458b OGLE-TR-56b OGLE-TR-113b OGLE-TR-132b $\tau$ Boo

s (distance from Earth) [parsec] - 47.3^a 1500^b 370^c 2500^d 15.6^e

d (semimajor axis) [AU] 5.2 0.045 0.0225^g 0.0228^h 0.0306 0.0489^e

R (radius) [ $R_{\rm J}$ ] 1 1.42^f 1.23^g 1.08^h 1.13^d 1.2 ...1.58

M (mass) [ $M_{\rm J}$ ] 1 0.69^f 1.45^g 1.35^h 1.19^d 4.4 ...10.0

$\omega$ (rotation rate) [ $\omega_{\rm J}$ ] 1 0.12 0.34 0.29 0.24 0.12

$\rho_{\rm c}$ (core density) [ $\rho_{c,{\rm J}}$ ] 1 0.24 0.78 1.07 0.82 $1.77\ldots3.1$

$\mathcal{M}$ (magnetic moment) [ $\mathcal{M}_{\rm J}$ ] 1 0.005 ...0.10 0.4 ...0.8 $0.5\ldots0.9$ $0.2\ldots0.6$ $0.5\ldots2.7$

$P_{{\rm rad}}$ (emitted radio power) [10¹⁴ W] $2.1\times 10^{-3}$ $0.037\ldots0.26$ $1.6\ldots2.7$ $1.8\ldots2.7$ $0.74\ldots1.3$ $0.69\ldots2.1$

$\Phi_{{\rm AU}}$ (flux density at 1 AU) [10¹⁰ Jy] $5.1\times 10^{-3}$ $17\ldots50$ $14\ldots18$ $9.3\ldots11$ $8.4\ldots11$ $4.0\ldots9.7$

$\Phi_s$ (flux density at distance s) [mJy] - $1.8\ldots5.3$ $\mathcal{O}(10^{-3})$ $\mathcal{O}(10^{-2})$ $\mathcal{O}(10^{-3})$ $3.9\ldots9.4$

$f_{\rm c}^{\max}$ (maximum frequency) [MHz] 23 $0.04\ldots0.84$ $4.9\ldots10.4$ $8.7\ldots16$ $3.6\ldots8.9$ $6.7\ldots19$

**Table 1:** Parameters for some "Hot Jupiters''. The values used for the calculation of the magnetic moments are given in units normalized to Jupiter. The lower part shows the scaling results for a stellar system of 4.6 Gyr age: planetary dipole moment, total emitted radio power, radio flux at 1 AU from the planet, radio flux at Earth (distance s) and maximum frequency. Values calculated for Jupiter are given for comparison. Sources of parameters: ^(a) Burrows et al. (2003), ^(b) Konacki et al. (2003), ^(c) Melo et al. (2004), ^(d) Moutou et al. (2004), ^(e) Leigh et al. (2003), ^(f) Cody & Sasselov (2002), ^(g) Torres et al. (2004), ^(h) Bouchy et al. (2004). See text for details.
	Jupiter	HD 209458b	OGLE-TR-56b	OGLE-TR-113b	OGLE-TR-132b	$\tau$ Boo
s (distance from Earth) [parsec]	-	47.3^a	1500^b	370^c	2500^d	15.6^e
d (semimajor axis) [AU]	5.2	0.045	0.0225^g	0.0228^h	0.0306	0.0489^e
R (radius) [ $R_{\rm J}$ ]	1	1.42^f	1.23^g	1.08^h	1.13^d	1.2 ...1.58
M (mass) [ $M_{\rm J}$ ]	1	0.69^f	1.45^g	1.35^h	1.19^d	4.4 ...10.0
$\omega$ (rotation rate) [ $\omega_{\rm J}$ ]	1	0.12	0.34	0.29	0.24	0.12
$\rho_{\rm c}$ (core density) [ $\rho_{c,{\rm J}}$ ]	1	0.24	0.78	1.07	0.82	$1.77\ldots3.1$
$\mathcal{M}$ (magnetic moment) [ $\mathcal{M}_{\rm J}$ ]	1	0.005 ...0.10	0.4 ...0.8	$0.5\ldots0.9$	$0.2\ldots0.6$	$0.5\ldots2.7$
$P_{{\rm rad}}$ (emitted radio power) [10¹⁴ W]	$2.1\times 10^{-3}$	$0.037\ldots0.26$	$1.6\ldots2.7$	$1.8\ldots2.7$	$0.74\ldots1.3$	$0.69\ldots2.1$
$\Phi_{{\rm AU}}$ (flux density at 1 AU) [10¹⁰ Jy]	$5.1\times 10^{-3}$	$17\ldots50$	$14\ldots18$	$9.3\ldots11$	$8.4\ldots11$	$4.0\ldots9.7$
$\Phi_s$ (flux density at distance s) [mJy]	-	$1.8\ldots5.3$	$\mathcal{O}(10^{-3})$	$\mathcal{O}(10^{-2})$	$\mathcal{O}(10^{-3})$	$3.9\ldots9.4$
$f_{\rm c}^{\max}$ (maximum frequency) [MHz]	23	$0.04\ldots0.84$	$4.9\ldots10.4$	$8.7\ldots16$	$3.6\ldots8.9$	$6.7\ldots19$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Stellar radio flux
	3 Planetary radio flux
	4 Radio emission and stellar system age
	5 Radio comparison
	6 Conclusion
	References