| Description: | [DPS Seminar] Prof. Ajit Mohan Srivastava (IOP, Bhubaneswar) -- High density QCD phase transitions inside neutron stars: Glitches and Gravitational waves |
| Date: | Wednesday, Mar 07, 2018 |
| Time: | 3 p.m. - 4 p.m. |
| Venue: | G02, Lecture Hall Complex |
| Details: | During the evolution of a pulsar, various phase transitions may occur in its dense interior, such as transition to various exotic high density phases of QCD. We discuss a technique which allows to probe these phases and associated transitions by detecting changes in rotation of the star arising from density changes and fluctuations during the transition affecting star's moment of inertia. These results suggest that these changes may be observable in the form of glitches and (recently observed) anti-glitches, and may be used to pin down the specific phase transition occurring inside the pulsar core. Interestingly, rapidly changing quadrupole moment arising from the density fluctuations during the phase transition may provide a new source for gravitational waves which may be detectable in LIGO (with upgrades). |
| Calendar: | Seminar Calendar (entered by anandamohan) |