Gravity seminar -ÌýMayusree Das Seminar
- Time:
- 14:00
- Date:
- 20 February 2025
- Venue:
- Building 54, room 10037
For more information regarding this seminar, please email Jonathan Thompson at J.E.Thompson@soton.ac.uk .
Event details
Title: Exploring neutron star superconductivity by solving the Einstein-Maxwell equations
Abstract: Neutron stars (NSs) are believed to become superconducting a few years after formation. In contrast to laboratory superconductors, protons form Cooper pairs below a critical temperature, enabling superconductivity. The NS core is thought to be type-II superconductor. The questions are: is it completely superconducting, what is its type? Is there any observational evidence? By solving the Einstein-Maxwell equations, we map superconducting regions in rotating, magnetized, cooling NSs under various magnetic field strengths and configurations. Our 2D models show that low-mass NSs develop superconductivity in a wider region than heavier ones. Additionally, some magnetized NSs have non-superconducting donut-shaped regions. Onset of superconductivity indirectly affects continuous gravitational wave signals from millisecond pulsars (e.g., PSR J1843-1113), which future detectors could identify, providing insight into hidden magnetic fields in NSs and confirming the existence of buried magnetic fields.
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Speaker information
Mayusree Das (Bangalore)