An Energetic Flare on at Microscopium

Details An Energetic Flare on at Microscopium An Energetic Flare on at Microscopium

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995iraj...22...31g&link_type=abstract

Irish Astronomical Journal, 1995, 22(1), 31

Astronomy and Astrophysics

Astronomy

Scientific paper

In this paper we present and discuss observations of an energetic mass flow event associated with a chromospheric flare on AT Mic. AT Mic is a dM4.5e star at 8.8 pc. The spectroscopic observations were made in May 1992 using the SAAO 1.9m telescope. The useful wavelength range covered was 3750 Angstroms to 4150 Angstroms incorporating the higher Balmer lines and Ca II H and K lines. Simple models were applied to derive order of magnitude estimates for the mass and kinetic energy budget of the flare for assumed electron density, ionization fraction and temperature values. It is found that the kinetic energy of the flare plasma is two orders of magnitude less than the radiative energy release.

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