Hanoi National University of Education Faculty of Physics
Astrophysics seminar
Fourteen years of solar corona observations with the SOHO-LASCO coronagraphs
Dr. Philippe LAMY
Laboratoire d'Astrophysique de Marseille, France
The SOHO solar observatory, a joint project of the European (ESA) and American (NASA) space agencies has been launched in late 1995 and has now completed almost 14 years of quasi continuous observation of the Sun and its corona, that is more than a solar cycle (11 years). Its Large Angle Spectrometric Coronagraph (LASCO) has been designed to observe the solar corona in natural and polarized white light from 2.5 to 30 solar radii. This is practically achieved by two separate instruments, LASCO-C2 (2.5 to 6) and LASCO-C3 (4 to 30 solar radii). The LASCO observations have revolutionized our perception and understanding of the dynamical processes in the corona. I will highlight some of the most important results on the quiet corona, the temporal evolution of the streamer belt, the Coronal Mass Ejections, the sungrazing and sunskirting comets.
Time: Tuesday, December 1, 200910:00a.m.
Location: Meeting room, Building C, Faculty of Physics,
136 Xuan Thuy, Cau Giay
All interested person are cordially invited to attend.
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