Modeling of H alpha Eruptive Events Observed at the Solar Limb

0399166 - ASÚ 2015 RIV NL eng J - Journal Article
Kotrč, Pavel - Bárta, Miroslav - Schwartz, Pavol - Kupryakov, Yu. A. - Kashapova, L. K. - Karlický, Marian
Modeling of H alpha Eruptive Events Observed at the Solar Limb.
Solar Physics. Roč. 284, č. 2 (2013), s. 447-466. ISSN 0038-0938. E-ISSN 1573-093X
R&D Projects: GA ČR GA205/09/1705; GA ČR(CZ) GA205/09/1469; GA ČR GAP209/10/1706; GA ČR GAP209/10/1680; GA ČR GAP209/12/1652; GA ČR GAP209/12/0103
Grant - others:EU(XE) PCIG-GA-2011-304265; EU(XE) People-2011-IRES 295272
Institutional support: RVO:67985815
Keywords : flares * eruptions * spectrum
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 3.805, year: 2013

We present spectra and slit-jaw images of limb and on-disk eruptive events observed with a high temporal resolution by the OndA (TM) ejov Observatory optical spectrograph. Analysis of the time series of full width at half-maximum (FWHM) in H alpha, H beta, and radio and soft X-ray (SXR) fluxes indicates two phenomenologically distinct types of observations which differ significantly in the timing of FWHM and SXR/radio fluxes. We investigated one such unusual case of a limb eruptive event in more detail. Synthesis of all observed data supports the interpretation of the H alpha broadening in the sense of regular macroscopic plasma motions, contrary to the traditional view (emission from warm dense plasma).
Permanent Link: http://hdl.handle.net/11104/0226551