Zobrazeno 1 - 10
of 106
pro vyhledávání: '"M. D. Andrews"'
Autor:
Christopher T. Russell, Peter W. Schuck, Mario H. Acuña, M. D. Andrews, David M. Rust, Brian J. Anderson, Tamitha Mulligan
Publikováno v:
The Astrophysical Journal. 621:524-536
We examined interplanetary (IP) magnetic field disturbances recorded by the Near Earth Asteroid Rendezvous-Shoemaker spacecraft (NEAR) when it was above either the east or west solar limb as seen from Earth; we then identified the associated coronal
Autor:
Alexander Nindos, M. D. Andrews
Publikováno v:
The Astrophysical Journal. 616:L175-L178
In a recent study Andrews found that approximately 40% of M-class flares between 1996 and 1999, classified according to GOES X-ray flux, are not associated with Coronal Mass Ejections (CMEs). Using 133 events from his dataset for which suitable photo
Autor:
Timothy Gallagher, Jonathan M. Large, Neil James Hales, Dominique Urban, M. D. Andrews, David Brown, Giles A. Brown, Craig P. Butts
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :2014-2021
Reaction of the β-lactam-based oxazolidinone 5 with N-sulfonylimines provides the exo and endo azapenams 8 in 22–54% yield. The reactivity of 2H-azirines as 1,3-dipolarophiles towards β-lactam-based azomethine ylides derived from oxazolidinones 5
Autor:
M. D. Andrews, Russell A. Howard
Publikováno v:
Space Science Reviews. 95:147-163
The causes and origins of Coronal Mass Ejections (CMEs) remain among the outstanding questions in Space Physics. The observations of CMEs by the LASCO coronagraphs on SOHO suggest that there are two distinct types of CMEs. The two types of events can
Publikováno v:
The Astrophysical Journal. 546:569-575
Using the Large-Angle Spectrometric Coronagraph (LASCO) aboard the Solar and Heliospheric Observatory (SOHO) spacecraft, we have imaged polar plumes extending 30 R☉ from disk center in the image plane and ~45 R☉ in three-dimensional space, a fact
Autor:
M D, Andrews
Publikováno v:
Academic Medicine. 75:S302-S305
Publikováno v:
The Astrophysical Journal. 511:451-465
This study presents data on two events from the Extreme-UV Imaging Telescope (EIT) and the Large Angle and Spectroscopic Coronagraph instruments (C1, C2, and C3), Geostationary Operational Environmental Satellite (GOES) soft X-ray data, and 40-800 MH
Publikováno v:
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science. 24:57-60
The January 6, 1997 halo CME is the subject of continuing research due to the large geomagnetic effects of this event. This paper presents a very simplified model which explains the key observational features. The CME is modelled as a hemispherical s
Autor:
M. Karlicky, M. J. Koomen, Rainer Schwenn, Murray Dryer, Howard A. Garcia, Antoinette B. Galvin, Zdenka Smith, D. J. Michels, Philippe Lamy, M. D. Andrews, R. Meisner, F. M. Ipavich, H. Aurass, Andreas Klassen, Craig DeForest, K. Arzner, Barbara J. Thompson, S. E. Paswaters, A. L. Kiplinger, Russell A. Howard, S. J. Tappin, Shinichi Watari, Guenter E. Brueckner, G. Mann
Publikováno v:
Solar Physics. 181:159-183
The first X-class flare in four years occurred on 9 July 1996. This X2.6/1B flare reached its maximum at 09:11 UT and was located in active region 7978 (S10° W30°) which was an old-cycle sunspot polarity group. We report the SOHO LASCO/EIT/MDI and
Autor:
S. E. Paswaters, R. A. Howard, Dennis G. Socker, M. J. Koomen, Y.-M. Wang, M. D. Andrews, John D. Moses, N. Rich, D. Vibert, Rainer Schwenn, Guenter E. Brueckner, G. M. Simnett, Kenneth P. Dere, A. Llebaria, Dennis Wang, J. R. Kraemer, D. J. Michels, N. R. Sheeley, Philippe Lamy, Clarence M. Korendyke
Publikováno v:
The Astrophysical Journal. 485:875-889
We employ coronal extrapolations of solar magnetograph data to interpret observations of the white-light streamer structure made with the LASCO coronagraph in 1996. The topological appearance of the streamer belt during the present minimum activity p