26 August 2024 to 4 September 2024
Orthodox Academy of Crete, Kolymbari, Crete, Greece
Europe/Athens timezone
The extended day of ICNFP 2024 will be 12 December 2024: https://indico.cern.ch/event/1486482/

X-ray Emission spectrum from strongly magnetized neutron stars due to axion to photon conversion

28 Aug 2024, 11:20
20m
Room 3

Room 3

Talk Workshop on Astro-Cosmo-Gravity Workshop on Astro-Cosmo-Gravity

Speaker

Prof. Madhukar Mishra (Department of Physics, Birla Institute of Technology and Science, Pilani, Pilani Campus)

Description

, We employ here the modified system of Tolman–Oppenheimer–Volkoff (TOV) equations due to the presence of a magnetic field to study the emission properties of the strongly magnetized neutron stars (NSs). We have considered the distance-dependent magnetic field in the modified TOV system of equations. We used three different equations of states (EoSs), namely APR, FPS, and SLY to solve these equations. We then obtain the axions emission rate by including the Cooper-pair-breaking formation process and Bremsstrahlung process in the core of NSs using the NSCool code. We primarily focus on Magnificent seven (M7) star RXJ 1856.5-3754. We further investigate the impact of the magnetic field on the actual observables, such as axion energy spectrum and axion-converted-photon flux at an axion mass in meV range for NSs with mass 1.4 solar mass. We finally compare our prediction of axion-converted-photon flux with PN + MOS + Chandra data sets and obtained a reasonable agreement with the data. .

Details

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Internet talk No
Is this an abstract from experimental collaboration? No
Name of experiment and experimental site NA
Is the speaker for that presentation defined? Yes

Author

Prof. Madhukar Mishra (Department of Physics, Birla Institute of Technology and Science, Pilani, Pilani Campus)

Co-authors

Mr Shubham Yadav (Department of Physics, Birla Institute of Technology and Science, Pilani, Pilani Campus) Prof. Tapomoy G Sarkar (Department of Physics, Birla Institute of Technology and Science, Pilani, Pilani Campus)

Presentation materials