Bright 30 THz Impulsive Solar Bursts

Abstract

Impulsive 30 THz continuum bursts have been recently observed in solar flares, utilizing small telescopes with a unique and relatively simple optical setup concept. The most intense burst was observed together with a GOES X2 class event on October 27, 2014, also detected at two sub-THz frequencies, RHESSI X-rays and SDO/HMI and EUV. It exhibits strikingly good correlation in time and in space with white light flare emission. It is likely that this association may prove to be very common. All three 30 THz events recently observed exhibited intense fluxes in the range of 104 solar flux units, considerably larger than those measured for the same events at microwave and sub-mm wavelengths. The 30 THz burst emission might be part of the same spectral burst component found at sub-THz frequencies. The 30 THz solar bursts open a promising new window for the study of flares at their origin

11 pages, 4 Figures J. Geophys. Res - Space Physics, accepted, May 21, 2015

References in corpus (1)

• Association of mid-infrared solar plages with Calcium K line emissions and magnetic structures

Cited by in corpus (6)

• Solar science with the Atacama Large Millimeter/submillimeter Array - A new view of our Sun
• Spectral and Imaging Observations of a White-light Flare in the Mid-Infrared
• Origin of the 30 THz emission detected during the 2012 March 13 solar flare at 17:20 UT
• A solar flare driven by thermal conduction observed in mid-infrared
• HATS: A Ground-Based Telescope to Explore the THz Domain
• Comparison of 30 THz impulsive burst time development to microwaves, H-alpha, EUV, and GOES soft X-rays