Accession Number : ADA267274


Title :   Energetics and Timing of the Hard and Soft X-Ray Emissions in White Light Flares


Corporate Author : PHILLIPS LAB HANSCOM AFB MA


Personal Author(s) : Neidig, Donald F ; Kane, Sharad R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267274.pdf


Report Date : Jan 1993


Pagination or Media Count : 5


Abstract : By comparing the Light curves in optical, hard x-ray, and soft x-ray wavelengths for 8 well-observed flares, we confirm previous results indicating that the white light flare (WLF) is associated with the flare impulsive phase. The WLF emission peaks within seconds after the associated hard x-ray peak, and nearly two minutes before the 1-8 A soft x-ray peak. It is further shown that the peak power in nonthermal electrons above 50 keV is typically an order of magnitude larger, and the power in 1-8 A soft x-rays radiated over 2pi strdn at the time of the WLF peak is an order of magnitude smaller, than the peak WLF power.... Solar flares, White light flares, Solar Hard X-ray Bursts.


Descriptors :   *X RAYS , *SOLAR FLARES , EMISSION , REPRINTS , PEAK POWER , SOFT X RAYS , HARD X RAYS , WHITE LIGHT , POWER , ELECTRONS , TIME , LIGHT


Subject Categories : Astrophysics
      Nuclear Physics & Elementary Particle Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE