Evidence for spatial structure in the population of gamma-ray bursts detected by the gamma-ray spectrometer on the solar maximum mission

1991 ◽  
Author(s):  
J. C. Higdon ◽  
S. M. Matz ◽  
G. H. Share ◽  
D. C. Messina ◽  
A. Iadicicco
Solar Physics ◽  
1980 ◽  
Vol 65 (1) ◽  
pp. 15-23 ◽  
Author(s):  
D. J. Forrest ◽  
E. L. Chupp ◽  
J. M. Ryan ◽  
M. L. Cherry ◽  
I. U. Gleske ◽  
...  

Science ◽  
1989 ◽  
Vol 244 (4903) ◽  
pp. 441-444 ◽  
Author(s):  
E. RIEGER ◽  
G. KANBACH ◽  
C. REPPIN ◽  
W. T. VESTRAND ◽  
D. J. FORREST ◽  
...  

2000 ◽  
Vol 543 (1) ◽  
pp. 77-89 ◽  
Author(s):  
P. Kurczynski ◽  
D. Palmer ◽  
H. Seifert ◽  
B. J. Teegarden ◽  
N. Gehrels ◽  
...  

1980 ◽  
Vol 27 (1) ◽  
pp. 381-386 ◽  
Author(s):  
Mark Staples ◽  
Indulis Gleske ◽  
Klaus Kubierschky

1999 ◽  
Vol 120 (2) ◽  
pp. 409-467 ◽  
Author(s):  
W. Thomas Vestrand ◽  
Gerald H. Share ◽  
Ronald J. Murphy ◽  
David J. Forrest ◽  
Erich Rieger ◽  
...  

X -ray and ultraviolet observations of flares have provided much important information on their spatial structure and magnetic topology. The early observations from Skylab emphasized the role of simple loops and loop arcades, but later observations from the Solar Maximum Mission have greatly complicated this picture. Flares appear in a multitude of loops with complex spatial and temporal interrelations. In many cases, interactions between different loops appear to play a crucial role. The inferred magnetic topology of solar flares will be reviewed with emphasis on the implications for processes of energy release and transfer. It will be shown that the spatial resolution of the observations obtained so far is still inadequate for solving many basic questions of solar flare research.


1986 ◽  
Vol 7 ◽  
pp. 739-742
Author(s):  
Chung-Chieh Cheng

In the past decade, impulsive hard X-ray bursts have been extensively observed (cf. Kane et al., 1980). These observations have increased our knowledge of the energy spectrum of the accelerated electrons and their temporal evolution. However, because of the lack of spatial resolution and direct plasma diagnostics, many important questions concerning the nature of the impulsive phase are still left unanswered. Since direct imaging of hard X-rays above 30 keV with high resolution of is still beyond our present technology, we have to use other indirect means to deduce the spatial structure of the hard X-ray source. With the recent launch of the Solar Maximum Mission (SMM) satellite, we are able to obtain correlated observations of the flare impulsive phase in hard X-ray and simultaneously in the UV lines of Si IV (1402 Å) and 0 IV (1401 Å). The Si IV/0 IV intensity ratio is density sensitive and therefore provides plasma diagnostics in the emission region. Analysis of the spatially resolved UV observations with the correlated hard X-ray observations allows us to study the spatial structure and physical conditions in the UV and hard X-ray sources (Cheng et al., 1981; 1982; 1984). Descriptions of the various solar instruments on SMM can be found in Solar Physics (vol. 65, pp 5-116). In this paper, I briefly summarize the important observational results and discuss their theoretical interpretation.


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