Statistical tests of young radio pulsars with/without supernova remnants: implying two origins of neutron stars

Abstract

The properties of the young pulsars and their relations to the supernova remnants (SNRs) have been the interesting topics. At present, 383 SNRs in the Milky Way galaxy have been published, which are associated with 64 radio pulsars and 46 pulsars with high energy emissions. However, we noticed that 630 young radio pulsars with spin periods of less than half a second have been not yet observed the SNRs surrounding or nearby them, which arises a question of that could the two types of young radio pulsars with/without SNRs hold distinctive characteristics? Here, we employ the statistical tests on the two groups of young radio pulsars with (52) and without (630) SNRs to reveal if they share different origins. Kolmogorov-Smirnov (K-S) and Mann-Whitney-Wilcoxon (M-W-W) tests indicate that the two samples have the different distributions with parameters of spin period ($P$), derivative of spin period ($\dot{P}$), surface magnetic field strength ($B$), and energy loss rate ($\dot{E}$). Meanwhile, the cumulative number ratio between the pulsars with and without SNRs at the different spindown ages decreases significantly after $10-20\mathrm{Kyr}$. So we propose that the existence of the two types of supernovae (SNe), corresponding to their SNR lifetimes, which can be roughly ascribed to the low-energy and high-energy SNe. Furthermore, the low-energy SNe may be formed from the $8-12{\mathrm{M}}_{\odot }$ progenitor, e.g., possibly experiencing the electron capture, while the main sequence stars of $12-25{\mathrm{M}}_{\odot }$ may produce the high-energy SNe probably by the iron core collapse.

8 pages, 10 figures, 3 tables. Published in MNRAS

References in corpus (14)

• The James Webb Space Telescope
• The ATNF Pulsar Catalogue
• A periodically active pulsar giving insight into magnetospheric physics
• 45 Years of Rotation of the Crab Pulsar
• The FAST Galactic Plane Pulsar Snapshot survey: I. Project design and pulsar discoveries
• NS 1987A in SN 1987A
• Rotational evolution of the Crab pulsar in the wind braking model
• Origin and evolution of magnetars
• Indication of a Pulsar Wind Nebula in the hard X-ray emission from SN 1987A
• Energetics and Birth Rates of Supernova Remnants in the Large Magellanic Cloud
• The radio SNR G65.1+0.6 and its associated pulsar J1957+2831
• The SUrvey for Pulsars and Extragalactic Radio Bursts IV: Discovery and polarimetry of a 12.1-second radio pulsar
• Fast radio bursts: do repeaters and non-repeaters originate in statistically similar ensembles
• Evolution implications of neutron star magnetic fields: inferred from pulsars and cyclotron lines of HMXBs

Cited by in corpus (2)

• Evolution of Spin Period and Magnetic Field of the Crab Pulsar: Decay of the Braking Index by the Particle Wind Flow Torque
• A Search for Radio Pulsars in Supernova Remnants Using FAST with One Pulsar Discovered