This list was started on 2010/09/24, and the goal is to get the greatest (or lowest in certain cases) recorded fluxes or flux densities (eventually also fluences for transient events) in all bands of the electromagnetic spectrum, and of solar origin. I'm in no rush to get it completed: entries will be added as I stumble upon them... I have sometimes concentrated on certain features, and might have ignored less prominent neighbouring ones.
These values are for approximately 1 AU, unless otherwise specified.
Wavelength or wavebandFlux or flux density (at 1 AU)DateInstrument and its locationReference
Type III, ~1 MHz 10^16 K, 10^8 sfu Wind/WAVES ? Dulk in "Radio Astronomy at Long Wavelengths" (Stone, Weiler, Goldstein, Bougeret Eds, 2000)
1227 MHz (GPS L2) 1.85x10^6 sfu 2006 December 06, ~19:35 UT FASR testbed (FST), Owens Valley, California Dale Gary, Proceedings, 2008?
1405 (or 1415?) MHz 2.05x10^6 sfu 2006 December 06, ~19:35 UT FASR testbed (FST), Owens Valley, California Dale Gary, Proceedings, 2008?
2800 MHz (10.7 cm) 55000 sfu 1991 June 06 Penticton? Ottawa?
2800 MHz (10.7 cm) 64.8 sfu (MIN!) 1954 June 02 Ottawa? article
1-8 A (GOES LO) >X28 (X45?) 2003 November 04, 19:29 UT GOES, geosynchronous orbit Top 10
2.223 MeV (neutron-capture line)1400 ph/cm^2; ~4 photons/s/cm^2/keV2003 October 28 INTEGRAL/SPI Kiener et al. (2006)
TSI (total solar irradiance) (at least during a flare) 268 ppm increase (0.36 W/m^2) 2003 October 28 11:05 UT SORCE TIM, LEO (645 km altitude) Woods et al. (2004)


Contributors to this list (in alphabetical order):

  • Pascal Saint-Hilaire
  • Albert Shih

    Any contribution (and corrections) to this list are most welcome!!! Please send me an email at shilaire@ssl.berkeley.edu