Seventeenth Marcel Grossmann Meeting

What is the true nature of PSR J0901-4046?

9 Jul 2024, 17:15

15m

M1 (Palazzo Micara of the ‘Gabriele d’Annunzio’ University)

Talk in a parallel session Slowly rotating pulsars Slowly rotating pulsars

Speaker

Banibrata Mukhopadhyay (Indian Institute of Science)

Description

The radio pulsar PSR J0901-4046 exhibits very slow rotation with a spin period
76 s, which is unusually low for a neutron star. Typically the spin period of
radio pulsars ranges 1.4 ms to 23.5 s, when they are divided into various
sub-classes, e.g. transient, millisecond pulsar, magnetar. The question
arises, is PSR J0901-4046 really a neutron star? In fact, the spin period
76 s more corroborates with a moderately spinning white dwarf. We plan to
examine the true nature of PSR J0901-4046 assuming it having a complicated
magnetic fields and based on its position with respect to the death line in
the $P-\dot{P}$ plane. We argue that the source seems to be more
plausibly a highly magnetized white dwarf, lying close to the white dwarf,
AR Scorpii, in the $P-\dot{P}$ plane.