LINEWIDTHS OF LOW-DEGREE ACOUSTIC MODES OF THE SUN

被引：20

作者：

ELSWORTH, Y ^{[1
]}

ISAAK, GR ^{[1
]}

JEFFERIES, SM ^{[1
]}

MCLEOD, CP ^{[1
]}

NEW, R ^{[1
]}

PALLE, PL ^{[1
]}

REGULO, C ^{[1
]}

CORTES, TR ^{[1
]}

机构：

[1] INST ASTROFIS CANARIAS,TENERIFE,SPAIN

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1990年 / 242卷 / 01期

关键词：

D O I：

10.1093/mnras/242.2.135

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Estimates of the spectral linewidths of low-degree (l= 0 and l= 1), '5-min' p-modes obtained from Doppler shift observations in 1984 (63 d) and 1986 (63 d) are reported. The observed linewidths increase from 0.5 μHz at 2000 μHz to 3 μHz at 3800 μHz for l= 0. Comparison with other data suggests that for a given frequency the linewidth increases with increasing values of l. On the assumption that the linewidth is substantially due to damping processes, the linewidths are consistent with e-folding times between 3.7 and 0.6 d. © Royal Astronomical Society. Provided by the NASA Astrophysics Data System.

引用

页码：135 / 140

页数：6

共 20 条

[1]

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[2]

CHRISTENSENDALS.J, 1986, SEISMOLOGY SUN DISTA, P23

[3]

DUVALL TL, 1988, IAU S, V123, P37

[4]

ELSWORTH YP, 1988, ADV HELIO ASTEROSEIS, P535