Back to the Starting Point: on the Simulation of Initial Magnetic Fields and Spin Periods of Non-accretion Pulsars

Abstract

Neutron stars (NSs) play essential roles in modern astrophysics. Magnetic fields and spin periods of newborn (zero age) NSs have large impact on the further evolution of NSs, which are however poorly explored in observation due to the difficulty of finding newborn NSs. In this work, we aim to infer the magnetic fields and spin periods (Bi and Pi) of zero-age NSs from the observed properties of NS population. We select non-accretion NSs (NANSs) whose evolution is solely determined by magnetic dipole radiation. We find that both Bi and Pi can be described by log-normal distribution and the fitting sensitively depends on our parameters.

8 pages, 5 figures, accepted for publication in ApJ

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Cited by in corpus (4)

• Isolated pulsar population synthesis with simulation-based inference
• On the initial spin period distribution of neutron stars
• Radio pulsar population synthesis with consistent flux measurements using simulation-based inference
• Pulsar Population Synthesis with Magnetorotational Evolution: Constraining the Decay of Magnetic field