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Home All issues Volume 502 / No 2 (August I 2009) A&A, 502 2 (2009) 665-678 Full HTML
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Table 5:

Surveys comparing power-law spectrum indices of hard X-ray loop-top and footpoint sources.
  Time Energy Energy Power-law index ${\gamma}^{a}$  
Satellite period range res. loop-top footpoint Refs.b
  [YY/MM] [keV] [keV] N Mn Md SD K S N Mn Md SD K S  
OSO-7 71/10-72/12 10-300 $\sim$30 25 4.8 4.8 1.0 -1.0 0.1 59 3.9 3.8 1.1 -0.6 0.6 (1)
Yohkoh 91/10-96/05 14-33 10 25 8.2 8.1 1.5 -1.1 -0.1 16 7.3 7.7 1.3 -0.9 -0.4 (2)
Yohkoh 91/10-98/08 14-53 10-20 12c 6.6 6.2 1.5 0.2 0.4 18c 5.2 4.9 1.6 -1.0 0.4 (3)
Yohkoh 91/10-98/08 14-93 10-40 5c 5.5 5.3 1.3 -1.5 0.2 13c 4.3 4.1 1.0 -1.0 0.7 (3)
Yohkoh 91/10-01/12 14-33 10 52 7.5 7.6 1.6 -0.5 -0.1 620 4.8 4.6 1.6 -0.6 0.4 (4)
Yohkoh 91/10-01/12 23-53 10-20 23 6.7 6.9 1.4 -0.7 -0.2 338 4.0 3.8 1.1 2.1 1.0 (4)
Yohkoh 91/10-01/12 33-93 20-40 3 - - - - - 155 3.4 3.4 0.7 1.2 0.6 (4)
Yohkoh 91/10-01/12 14-53 10-20 7d 5.6 5.2 1.4 -1.3 0.2 185d 3.9 3.7 1.1 0.8 0.8 (4)
Yohkoh 91/10-01/12 23-93 10-40 1d - - - - - 130d 3.3 3.2 0.7 1.4 0.6 (4)
RHESSI 02/02-05/07 3-1.7 $\times10^4$ 1-5 5c 5.1 5.6 1.2 -2.0 -0.3 10c 2.9 2.8 0.5 -1.4 0.1 (5)
RHESSI 02/02-04/08 3-1.7 $\times10^4$ 1-5 50 5.4 5.5 1.2 -0.8 0.3 0 - - - - - (6)
RHESSI 02/02-05/08 3-1.7 $\times10^4$ 1-5 0 - - - - - 174c 3.3 3.1 0.5 0.3 0.7 (7)
a N - number of events; Mn - mean, Md - median, SD - standard deviation, K - kurtosis; S - skewness.
b (1) - Roy & Datlowe (1975); (2) - Mariska & McTiernan (1999); (3) - Petrosian et al. (2002); (4) - this issue; (5) - Battaglia & Benz (2006, 2007); (6) - Krucker & Lin (2008); (7) - Saint-Hilaire et al. (2008).
c Imaging spectroscopy.
d Events unbiased by the thermal component.

Source LaTeX | All tables | In the text

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