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Titolo:
Observations of the 24 September 1997 coronal flare waves
Autore:
Thompson, BJ; Reynolds, B; Aurass, H; Gopalswamy, N; Gurman, JB; Hudson, HS; Martin, SF; St Cyr, OC;
Indirizzi:
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA NASA Greenbelt MDUSA 20771 ard Space Flight Ctr, Greenbelt, MD 20771 USA Astrophys Inst Potsdam, Potsdam, Germany Astrophys Inst Potsdam Potsdam Germany s Inst Potsdam, Potsdam, Germany Catholic Univ Amer, Washington, DC 20064 USA Catholic Univ Amer Washington DC USA 20064 Amer, Washington, DC 20064 USA Solar Phys Res Corp, Tucson, AZ USA Solar Phys Res Corp Tucson AZ USASolar Phys Res Corp, Tucson, AZ USA Helio Res, La Crescenta, CA USA Helio Res La Crescenta CA USAHelio Res, La Crescenta, CA USA Computat Phys Inc, Fairfax, VA USA Computat Phys Inc Fairfax VA USAComputat Phys Inc, Fairfax, VA USA
Titolo Testata:
SOLAR PHYSICS
fascicolo: 1-2, volume: 193, anno: 2000,
pagine: 161 - 180
SICI:
0038-0938(200004)193:1-2<161:OOT2S1>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
II RADIO-BURSTS; MASS EJECTION; WIND SPACECRAFT; ORIGIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: Thompson, BJ NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA NASAGreenbelt MD USA 20771 ght Ctr, Greenbelt, MD 20771 USA
Citazione:
B.J. Thompson et al., "Observations of the 24 September 1997 coronal flare waves", SOLAR PHYS, 193(1-2), 2000, pp. 161-180

Abstract

We report coincident observations of coronal and chromospheric 'flare wave' transients in association with a flare, large-scale coronal dimming, metric radio activity and a coronal mass ejection. The two separate eruptions occurring on 24 September 1997 originate in the same active region and display similar morphological features. The first wave transient was observed inEUV and H alpha data, corresponding to a wave disturbance in both the chromosphere and the solar corona, ranging from 250 to approaching 1000 km s(-1) at different times and locations along the wavefront. The sharp wavefronthad a similar extent and location in both the EUV and H alpha data. The data did not show clear evidence of a driver, however. Both events display a coronal EUV dimming which is typically used as an indicator of a coronal mass ejection in the inner corona. White-light coronagraph observations indicate that the first event was accompanied by an observable coronal mass ejection while the second event did not have clear evidence of a CME. Both eruptions were accompanied by metric type II radio bursts propagating at speedsin the range of 500-750 km s(-1), and neither had accompanying interplanetary type II activity. The timing and location of the flare waves appear to indicate an origin with the flaring region, but several signatures associated with coronal mass ejections indicate that the development of the CME mayoccur in concert with the development of the flare wave.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 15:19:13