VlA And SOHO Observations Of Decimetric Bursts And Type I Noise Storm Depressions In Association With Evolving Coronal Loops And Coronal Mass Ejections

Details VlA And SOHO Observations Of Decimetric Bursts And Type I Noise Storm Depressions In Association With Evolving Coronal Loops And Coronal Mass Ejections VlA And SOHO Observations Of Decimetric Bursts And Type I Noise Storm Depressions In Association With Evolving Coronal Loops And Coronal Mass Ejections

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.1818w&link_type=abstract

American Astronomical Society, SPD meeting #42, #18.18; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Very Large Array (VLA) observations at 91 cm wavelength have been combined with data from the SOHO (EIT and LASCO) solar mission to investigate evolving magnetic fields above active regions and their association with nonthermal electrons that give rise to Type I noise storms and impulsive decimetric bursts in the middle corona. The VLA observations provide information about the medium-sized and large-scale magnetic structures in the corona where nonthermal particle acceleration and energy release take place. On one day, a decimetric pulsation source at the limb appeared to be associated with coronal heating and structural changes in the underlying loops imaged by EIT on SOHO. On another day, the intensity of a long-lasting type I noise storm source transiently decreased as a coronal mass ejection, observed by LASCO, propagated outwardly from the limb. These observations suggest that the thermal environment of the corona above the region where the quiescent noise storm was detected was affected by energy deposited in this region of the corona by the CME.

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