Solar Burst on 2014 October 27, 14:12 UT

• 40-hour plot of received power vs. time, showing diurnal enhancements in over-the-horizon radio-frequency interference (RFI, which includes ambient noise brief spikes from radiosonde and other sources). This is carried by the ionosphere much more during day than night. Roughly between hours 38 and 39 (14-15h UT = 9-10am CDT on Monday, October 27) the RFI drops dramatically in a Sudden Ionospheric Disturbance (SID), in which the ionosphere is abruptly excited following a Solar flare and absorbs rather than reflects most signals.

• 50-minute plot received power vs. time - from single recording file, covering solar flare event at 14:11-14:13 UT (peaking at 14:12 UT) and start of resulting Sudden Ionospheric Disturbance event

• Flare report (The Watchers) - Optical, UV, and X-ray images and light curves of Sun during flare event, including originating sunspot group

• Solar Dynamical Observatory daily data for 2014 October 27

• Received signal wave form - 2-minute window of flare activity marked (Audacity)

• MP3 audio - compressed recording of 2-minute flare window

• WAV audio file - original, uncompressed 2-minute recording segment

• Active Region 2192 Sunspot Group

  • Jupiter-Size Sunspot Group Now in View (Sky & Telescope, 2014 Oct 22)

  • Sunspot Group AR 2192 Crackles (APOD video, 2014 Oct 19-21; 2014 Oct 22)

  • `Freakish' Sunspot Wows Astronomers (NPR article on AR 2192, 2014 Oct 24)

  • AR 2192: Giant on the Sun (APOD close view, 2014 Oct 24)

  • Sunspots and Solar Eclipse (APOD, 2014 Oct 25)

  • Sunspot AR2192 Flare Family Portrait (NASA images of AR 2192 flares over 2014 Oct 19-28)