Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...379..324h&link_type=abstract
Astronomy and Astrophysics, v.379, p.324-335 (2001)
Astronomy and Astrophysics
Astrophysics
19
Sun: Uv Radiation, Sun: Activity, Sun: Atmosphere, Sun: Corona
Scientific paper
Jet-like eruptive events have been detected in the extreme ultraviolet (EUV) observations from the Solar and Heliospheric Observatory (SOHO) spacecraft. Some jet-like events are shown and for one event, that of January 22 2000, we provide a detailed analysis of the EUV observations. The January 22 observation was part of an on-going campaign to observe the onset of coronal mass ejections (CMEs) using extreme ultraviolet spectroscopy. A high-temperature fan-like jet was first detected in emission lines from plasmas at one million K and over, and it appears to be the onset of a narrow mass ejection identified later in coronagraph data. This was followed by a dramatic jet or finger of cool (<=250 000 K), rotating plasma which extended vertically, high into the corona. It extended well beyond the field of view of the instrument and appears to relate to a small ejected cloud which is detected in subsequent coronagraph data. The spectroscopic characteristics are used to provide plasma diagnostic information for these two events, and this combined with images for a wide range of temperatures allows a thorough investigation of the processes leading to such eruptions. A simple accreting magnetic field model is used to descibe the basic features of the jet activity.
Bingham Richard
Bryans Paul
Harrison Richard A.
No associations
LandOfFree
EUV Sprays: Jet-like eruptive activity on the solar limb does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with EUV Sprays: Jet-like eruptive activity on the solar limb, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and EUV Sprays: Jet-like eruptive activity on the solar limb will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1232733