dc.contributor.author |
Kathiravan, C |
|
dc.contributor.author |
Ramesh, R |
|
dc.date.accessioned |
2008-09-09T10:43:59Z |
|
dc.date.available |
2008-09-09T10:43:59Z |
|
dc.date.issued |
2005-07 |
|
dc.identifier.citation |
Astrophysical Journal, Vol. 627, No. 1, Part 2, pp. L77 - L80 |
en |
dc.identifier.issn |
0004-637X |
|
dc.identifier.uri |
http://hdl.handle.net/2248/3498 |
|
dc.description.abstract |
We present meter-wavelength observations of the solar corona close to the onset of the ``halo'' coronal mass ejection (CME) of 1998 January 21 and estimate the change in electron density with time through a reproduction of the observed two-dimensional radio brightness distribution using a ray-tracing technique. Our calculations show that the average density above the background in the southeast quadrant of the corona overlying the visible solar disk had increased significantly (from 0 to 18), in the aftermath of the CME liftoff. This indicates that the source region of the event must have been located at a lower level of the solar atmosphere in that area. The rate of mass injection corresponding to the above change in density was found to be ~8.8×10/sup15 g hr/sup-1. |
en |
dc.language.iso |
en |
en |
dc.publisher |
The American Astronomical Society |
en |
dc.relation.uri |
http://www.journals.uchicago.edu/doi/abs/10.1086/431930 |
en |
dc.relation.uri |
http://dx.doi.org/10.1086/431930 |
en |
dc.subject |
Sun: Solar-terrestrial Relations |
en |
dc.subject |
Sun: Activity |
en |
dc.subject |
Sun: Corona |
en |
dc.subject |
Sun: Radio Radiation |
en |
dc.title |
Identification of the Source Region of a ``Halo'' Coronal Mass Ejection Using Meter-Wavelength Radio Data |
en |
dc.type |
Article |
en |