| dc.contributor.advisor | Seetha, S | |
| dc.contributor.advisor | Choudhuri, Arnab Rai | |
| dc.contributor.advisor | | |
| dc.contributor.author | V, Girish | |
| dc.date.accessioned | 2005-04-20T09:53:43Z | |
| dc.date.accessioned | 2018-07-31T06:18:54Z | |
| dc.date.available | 2005-04-20T09:53:43Z | |
| dc.date.available | 2018-07-31T06:18:54Z | |
| dc.date.issued | 2005-04-20T09:53:43Z | |
| dc.date.submitted | 2004 | |
| dc.identifier.uri | https://etd.iisc.ac.in/handle/2005/101 | |
| dc.identifier.srno | 113198532 | |
| dc.description.abstract | Rapidly oscillating Ap (roAp) stars are cool, magnetic, chemically peculiar A-F type stars which exhibit high frequency oscillations similar to that of the famous five minute oscillations of Sun. These oscillations are interpreted as low degree (l<3), high order (n >10-30), non-radial p-mode oscillations. The periods of these pulsations lie in the range of 4-16 minutes with typical amplitudes of few milli-magnitudes
(< 8mmag) in the Johnson-B filter. More than a dozen roAp stars are multiperiodic, making them suitable for asteroseismology. The presence of high magnetic fields (of the order of few kG) in these stars gives us a chance to study the effects of magnetic fields on pulsations.
The thesis presents the efforts to search for new roAp stars in the northern hemisphere and its results. | en |
| dc.format.extent | 2846881 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en | |
| dc.publisher | Indian Institute of Science | en |
| dc.rights | I grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation. | en |
| dc.subject.classification | Physics | en |
| dc.subject.keyword | Astronomy and Astrophysics | en |
| dc.subject.keyword | Asteroseismology of roAp stars | en |
| dc.title | Search for Northern Hemisphere Rapidly Oscillating Ap stars | en |
| dc.type | Electronic Thesis and Dissertation | en |
| dc.degree.name | PhD | en |
| dc.degree.level | Doctoral | en |
| dc.degree.grantor | Indian Institute of Science | en |
| dc.degree.discipline | Faculty of Science | en |
