Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Frances Tang"'
Publikováno v:
The Astrophysical Journal. 540:583-587
We have studied 8 yr of active region observations from the United States Air Force/Mount Wilson data set, supplied by the NOAA World Data Center, to confirm the relation between δ spots and large flares. We found that after correcting some errors w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25005a82252df39fdbfd19b32a35faef
https://doi.org/10.1086/309303
https://doi.org/10.1086/309303
Publikováno v:
Solar Physics. 165:223-235
We analyzed two sequences of quiet-Sun magnetograms obtained on June 4, 1992 and July 28, 1994. Both were observed during excellent seeing conditions such that the weak intranetwork (IN) fields are observed clearly during the entire periods. Using th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3762faefdaa31b4ba868b7adfa01b9ef
https://doi.org/10.1007/bf00149712
https://doi.org/10.1007/bf00149712
Autor:
Alicia L. Clúa de Gonzalez, Bruce T. Tsurutani, Masaki Okada, Walter D. Gonzalez, J. K. Arballo, Frances Tang
Publikováno v:
Journal of Geophysical Research: Space Physics. 100:21717-21733
Interplanetary magnetic field and plasma data are compared with ground-based geomagnetic Dst and AE indices to determine the causes of magnetic storms, substorms, and quiet during the descending phase of the solar cycle. The primary focus is on 1974
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e29993420f30e85e35192ceaa3b620d3
https://doi.org/10.1029/95ja01476
https://doi.org/10.1029/95ja01476
Publikováno v:
Solar Physics. 160:277-288
Big Bear deep magnetograms of June 4, 1992 provide unprecedented observations for direct measurements of solar intranetwork (IN) magnetic fields. More than 2500 individual IN elements and 500 network elements are identified and their magnetic flux me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f9dfc9eae38f688ab9d88a9f0ece2bb
https://doi.org/10.1007/bf00732808
https://doi.org/10.1007/bf00732808
Autor:
Frances Tang, Haimin Wang
Publikováno v:
Solar Physics. 143:107-118
A study of registered, highly time-compressed, white-light movies, made from digital data obtained at Big Bear, revealed dynamic and complex photospheric activity for the first time inside the large delta spot of the March 1989 region. Similar activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::670a224e2f5724efd8f74243f2c0581b
https://doi.org/10.1007/bf00619099
https://doi.org/10.1007/bf00619099
Publikováno v:
Geophysical Research Letters. 19:73-76
The five largest magnetic storms that occurred between 1971 to 1986 are studied to determine their solar and interplanetary causes. All of the events are found to be associated with high speed solar wind streams led by collisionless shocks. The high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8d3c9fc7e526329ac5652eaee7719de
https://doi.org/10.1029/91gl02783
https://doi.org/10.1029/91gl02783
Publikováno v:
Solar Physics. 134:145-169
Detailed H-alpha, UV-line, and X-ray observations are presented of an extended arch that developed as a consequence of a compact subflare to a length of 300,000 km, in an 'included' magnetic polarity of low magnetic field strength. This great arch wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f06efca7e47ffd204a592dd3a2d2480b
https://doi.org/10.1007/bf00148745
https://doi.org/10.1007/bf00148745
Autor:
Haimin Wang, Frances Tang
Publikováno v:
Solar Physics. 132:247-256
High-resolution magnetograph observations of the polar magnetic fields have been obtained at intervals of time since the end of 1986 at Big Bear Solar Observatory. The Big Bear data differ from the low-resolution, full-disk magnetograph observations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2df42dbe6ddd55a362e6415cb2ff4e3
https://doi.org/10.1007/bf00152286
https://doi.org/10.1007/bf00152286
Publikováno v:
Solar Physics. 127:149-163
We present evidence of X-ray emission from surges that are bright in Hα. These surges have many features common to flaring arches of Martin and Svestka (1988); the basic difference between the two is that in flaring arches cold and hot plasma are in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbdf74757181af372fc4673fd44e7c74
https://doi.org/10.1007/bf00158520
https://doi.org/10.1007/bf00158520
Autor:
Roger R. Anderson, Edward J. Smith, Bruck E. Goldstein, Frances Tang, Bruce T. Tsurutani, Walter D. Gonzalez, S.-I. Akasofu
Publikováno v:
Planetary and Space Science. 38:109-126
Recent data on the interplanetary and solar causes of geomagnetic activity are reviewed. Emphasis is given to the interplanetary source of southward Bz for magnetic storms, the solar sources of magnetic storms, and the roles of 'great' solar flares,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::237a43a5df0440d47397603034980ad1
https://doi.org/10.1016/0032-0633(90)90010-n
https://doi.org/10.1016/0032-0633(90)90010-n