AN ESTIMATE OF THE MAGNETIC FIELD STRENGTH ASSOCIATED WITH A SOLAR CORONAL MASS EJECTION FROM LOW FREQUENCY RADIO OBSERVATIONS

作者：Raja K Sasikumar^*; Ramesh R; Hariharan K; Kathiravan C; Wang T J

来源：Astrophysical Journal, 2014, 796(1): 56.

DOI：10.1088/0004-637X/796/1/56

• Sun: activity
• Sun: corona
• Sun: coronal mass ejections (CMEs)
• Sun: flares
• Sun: magnetic fields
• Sun: radio radiation

We report ground based, low frequency heliograph (80 MHz), spectral (85-35 MHz), and polarimeter (80 and 40 MHz) observations of drifting, non-thermal radio continuum associated with the %26quot;halo%26quot; coronal mass ejection that occurred in the solar atmosphere on 2013 March 15. The magnetic field strengths (B) near the radio source were estimated to be B approximate to 2.2 +/- 0.4 G at 80 MHz and B approximate to 1.4 +/- 0.2 G at 40 MHz. The corresponding radial distances (r) are r approximate to 1.9 R-circle dot (80 MHz) and r approximate to 2.2 R-circle dot (40 MHz).

• 出版日期2014-11-20