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Analysis of GOES and RHESSI Solar Event Light Curves with Associated Radio Bursts

This study presents an analysis of three distinct solar events identified in the GOES and RHESSI light curves, occurring at 07:30 UT, 07:39 UT, and 08:00 UT. The first two events exhibit impulsive characteristics while the third is more gradual and protracted. Concurrently observed Culgoora radio data reveals two type II bursts correlated with the solar events. The bursts occur at different frequencies and shock speeds, providing valuable insights into the temporal relationship between solar emissions and radio wave activity.

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Analysis of GOES and RHESSI Solar Event Light Curves with Associated Radio Bursts

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  1. Event Timing Views JLC

  2. 2 3 1 2 3 1 GOES and RHESSI Solar Event Light-curves Three separate events may be distinguished in the GOES and RHESSI light- curves with start times: E1: 07:30 UT E2: 07:39 UT E3: 08:00 UT Events 1 and 2 are quite impulsive even in the GOES data Event 3 is more gradual and of longer duration

  3. Culgoora radio data • Two type II bursts were observed; • DRIFTING: 180 - 25 MHZ, 0739 UT-0750 UT;SHOCK SPEED ~550 Km/s (2) DRIFTING: 100 - 35 MHZ, 0748 UT-0757 UT; SHOCK SPEED ~ 850 Km/s From fplasma = 9√ne kHz, heights of first detection are h1 ~ 2. 105 km → Dt1 ≥ 6.5 min h2 ~ 3.105 km → Dt2 ≥ 6 min Thus by relating to the event start times, burst #1 is associated with E1 and the faster burst #2 with E2 – burst #2 probably overtakes and merges with the burst #1 shock 19-Jan 20:00UT - 20-Jan 07:59 UT

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