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Observational data needs for plasma phenomena
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Niedner Jr., M. B. |
| Copyright Year | 1981 |
| Description | Bright comets display a rich variety of interesting plasma phenomena which occur over an enormous range of spatial scales, and which require different observational techniques to be studied effectively. Wide-angle photography of high time resolution is probably the best method of studying the phenomenon of largest known scale: the plasma tail disconnection event (DE), which has been attributed to magnetic reconnection at interplanetary sector boundary crossings. These structures usually accelerate as they recede from the head region and observed velocities are typically in the range 50 V km/s. They are often visible for several days following the time of disconnection, and are sometimes seen out past 0.2 AU from the cometary head. The following areas pertaining to plasma phenomena in the ionoshere are addressed: the existence, size, and heliocentric distance variations of the contact surface, and the observational signatures of magnetic reconnection at sector boundary crossings. |
| File Size | 1687386 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820006119 |
| Archival Resource Key | ark:/13960/t15n11r19 |
| Language | English |
| Publisher Date | 1981-10-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Comet Heads Comet Tails Magnetic Fields Solar Wind Plasmas Physics Radiation Pressure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
