OVSA-LWA Spectroscopy AI Summary for 2026/04/02

Section: Summary
Solar radio activity on 2026-04-02 was characterized by a quiet morning followed by a period of significant activity starting in the late afternoon. Solar tracking by the OVRO-LWA array began at approximately 13:42 UTC. Prior to 17:00 UTC, the solar emission was quiet, punctuated only by very weak, isolated spikes below 5 sfu. The first significant activity occurred between 17:01 and 17:04 UTC with a discrete group of Type III bursts reaching a peak flux of about 60 sfu.

The most intense activity of the day took place shortly after 18:04 UTC, consisting of a series of strong Type III bursts. This group peaked at 18:07 UTC with an estimated flux of 150 sfu, marking it as the strongest event of the day. This period of impulsive activity transitioned into a long-duration radio continuum, likely a Type IV burst or a noise storm, which persisted from roughly 18:35 UTC until 19:50 UTC. This storm covered a wide frequency range (25–85 MHz) and reached a peak flux of approximately 50 sfu. Activity levels declined significantly after 20:00 UTC, with only occasional faint bursts observed for the remainder of the tracking day.

Section: Events
Event # | Begin UT | Peak UT | End UT | Freq Range | Peak Flux | Type | Spectrogram URL
1 | 1701 | 1702 | 1704 | 20-80 | 60 sfu | Type III burst group | https://ovsa.njit.edu/lwa-data/qlook_spectra/2026/04/02/20260402-171040-lwa_beam.png
2 | 1804 | 1807 | 1811 | 20-85 | 150 sfu | Strong Type III burst group | https://ovsa.njit.edu/lwa-data/qlook_spectra/2026/04/02/20260402-181218-lwa_beam.png
3 | 1835 | 1850 | 1950 | 25-85 | 50 sfu | Noise storm / Type IV continuum | https://ovsa.njit.edu/lwa-data/qlook_spectra/2026/04/02/20260402-184307-lwa_beam.png, https://ovsa.njit.edu/lwa-data/qlook_spectra/2026/04/02/20260402-191356-lwa_beam.png, https://ovsa.njit.edu/lwa-data/qlook_spectra/2026/04/02/20260402-194444-lwa_beam.png