| Issue |
A&A
Volume 447, Number 3, March I 2006
|
|
|---|---|---|
| Page(s) | 1121 - 1123 | |
| Section | The Sun | |
| DOI | https://doi.org/10.1051/0004-6361:20052857 | |
| Published online | 10 February 2006 | |
Occultation of a solar active region at 1.5 GHz during the eclipse of November 3, 1994
1
Indian Institute of Astrophysics, Bangalore, 560 034, India e-mail: subra@iiap.res.in
2
Instituto Nacional de Pesquisas Espaciais, 515, 12201-970, San Jose Dos Campos, SP, Brazil
Received:
10
February
2005
Accepted:
30
August
2005
We observed the solar eclipse of November 3, 1994 with a 4-m diameter antenna and a radio spectrograph operating at
GHz with a time resolution of 100 ms. Here we present
the observations of the occultation of the solar active region AR 7798
by the lunar limb. From the derivative of the eclipse curve, we found
a source with an angular size of
12 s of arc associated with this active region.
Key words: Sun: radio radiation / Sun: activity / sunspots / Sun: chromosphere
© ESO, 2006
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