2009 VLF Monitor for Gamma Ray Bursts and Solar Flares Study

VLF Monitor for Gamma Ray Bursts and Solar Flares Study January to August 2009


This resource provides a continuous record of the reception at Moore Observatory in Brownsboro, Kentucky, of the very low frequency (VLF) 24 KHz signal from NAA in Cutler, Maine.

During daylight hours over the path to this source the strength of the reception is modified by solar activity, and a sudden change in the level usually indicates that a solar flare has occurred. The receivers are sensitive to C-class or stronger flares, those that cause an x-ray flux increase of a few microwatts per square meter in the 1 to 8 Angstrom band monitored by the GOES satellites. It also responds to strong gamma-ray bursts.

We automatically record the 24 KHz signal from NAA, and maintain an archive of the original data with jpeg versions of daily graphs. NAA is an indicator of solar flare activity from about 13h to 21h UT during the winter, and from 9h to 1h UT during the summer.

Category:

Science & Technology

Tags:

• VLF Monitor
• Gamma Ray Bursts
• Solar Flares
• Cosmic Rays
• Solar Cycle 24
• grb