VLA 20120225

Overview

This observation was made in C configuration (max baseline length 3 km) with 26 antenna in L band (1-2 GHz), with 1 MHz frequency resolution and 1 second time resolution. Two B-class microflares were covered: A B3.6 microflare at 19:59 and a B4.0 microflare at 20:50. RHESSI data is available for both.

• VLA overview movie:

• AIA movie:

List of Events/Features

Time	Feature	Event	AIA Movie	RHESSI	Quicklook Images	Comments
19:43-19:44	small stripes	Maybe A6.4Microflare@19:43	[AR2501]	No	File:1943.png	Few stripes at lower frequency below 1.5GHz, maybe a microflare. Radio flux increase corresponding the west source.
20:08-20:10	Type III	C1.2@19:59	[on the limb]	No	File:2008ty3.png	Type III like features at lower frequency around 1~1.3 GHz, Radio source locate on the limb
20:08-20:10	Broadband GS	C1.2@19:59	[on the limb]	No	File:2008gs.png	Broadband gyrosynchrotron emission across entire 1-2 GHz band, Radio source locate on the limb
21:09-21:12	Pulsations	C1.8@21:08	[Ar2501]	Yes	File:2110.png	Quasi-periodic pulsations in impulsive phase. Highest RHESSI response @ 25keV. Radio source located near a footpoint.