Search for evidence of low energy protons in solar flares

Details Search for evidence of low energy protons in solar flares Search for evidence of low energy protons in solar flares

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992nascp3137..536m&link_type=abstract

In NASA. Goddard Space Flight Center, The Compton Observatory Science Workshop p 536-541 (SEE N92-21874 12-90)

Computer Science

5

Emission Spectra, H Alpha Line, Linear Polarization, Polarimeters, Proton Energy, Solar Flares, Solar Protons, Solar X-Rays, Charge Coupled Devices, Field Of View, Gamma Ray Observatory, Imaging Techniques, Scanners, Solar Observatories, Solar Spectra, Spectrographs

Scientific paper

We searched for linear polarization in the H alpha line using the Stokes Polarimeter at Mees Solar Observatory and present observations of a flare from NOAA active region 6659 which began at 01:30 UT on 14 Jun. 1991. Our dataset also includes H alpha spectra from the Mees charge coupled device (MCCD) imaging spectrograph as well as hard x ray observations from the Burst and Transient Source Experiment (BATSE) instrument on board the Gamma Ray Observatory (GRO). The polarimeter scanned a 40 x 40 inch field of view using 16 raster points in a 4 x 4 grid. Each scan took about 30 seconds with 2 seconds at each raster point. The polarimeter stopped 8.5 inches between raster points and each point covered a 6 inch region. This sparse sampling increased the total field of view without reducing the temporal cadence. At each raster point, an H alpha spectrum with 20 mA spectral sampling is obtained covering 2.6 A centered on H alpha line center. The preliminary conclusions from the research are presented.

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