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On the methods of determining the radio emission geometry in pulsar magnetospheres
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dyks, J. Rudak, B. Harding, Alice K. |
| Copyright Year | 2004 |
| Description | We present a modification of the relativistic phase shift method of determining the radio emission geometry from pulsar magnetospheres proposed by Gangadhara & Gupta (2001). Our modification provides a method of determining radio emission altitudes which does not depend on the viewing geometry and does not require polarization measurements. We suggest application of the method to the outer edges of averaged radio pulse profiles to identify magnetic field lines associated with'the edges of the pulse and, thereby, to test the geometric method based on the measurement of the pulse width at the lowest intensity level. We show that another relativistic method proposed by Blaskiewicz et al. (1991) provides upper limits for emission altitudes associated with the outer edges of pulse profiles. A comparison of these limits with the altitudes determined with the geometric method may be used to probe the importance of rotational distortions of magnetic field and refraction effects in the pulsar magnetosphere. We provide a comprehensive discussion of the assumptions used in the relativistic methods. |
| File Size | 1481728 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040081413 |
| Archival Resource Key | ark:/13960/t1ng9m794 |
| Language | English |
| Publisher Date | 2004-06-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Radio Emission Viewing Pulsar Magnetospheres Refraction Distortion Magnetic Effects Magnetic Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
