The TRAPUM Small Magellanic Cloud pulsar survey with MeerKAT -- II. Nine new radio timing solutions and glitches from young pulsars

Abstract

We report new radio timing solutions from a three-year observing campaign conducted with the MeerKAT and Murriyang telescopes for nine Small Magellanic Cloud pulsars, increasing the number of characterised rotation-powered extragalactic pulsars by 40 per cent. We can infer from our determined parameters that the pulsars are seemingly all isolated, that six are ordinary pulsars, and that three of the recent MeerKAT discoveries have a young characteristic age of under 100 kyr and have undergone a spin-up glitch. Two of the sources, PSRs J0040$-$7337 and J0048$-$7317, are energetic young pulsars with spin-down luminosities of the order of 10${}^{36}$ erg s${}^{-1}$. They both experienced a large glitch, with a change in frequency of about 30 $\mu$Hz, and a frequency derivative change of order $-10^{-14}$ Hz s${}^{-1}$. These glitches, the inferred glitch rate, and the properties of these pulsars (including potentially high inter-glitch braking indices) suggest these neutron stars might be Vela-like repeating glitchers and should be closely monitored in the future. The position and energetics of PSR J0048$-$7317 confirm it is powering a new Pulsar Wind Nebula (PWN) detected as a radio continuum source; and similarly the association of PSR J0040$-$7337 with the PWN of Supernova Remnant (SNR) DEM S5 (for which we present a new Chandra image) is strengthened. Finally, PSR J0040$-$7335 is also contained within the same SNR but is a chance superposition. It has also been seen to glitch with a change of frequency of $10^{-2}$ $\mu$Hz. This work more than doubles the characterised population of SMC radio pulsars.

arXiv comment20 pages, 13 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (61)

• The ATNF Pulsar Catalogue
• The SIMBAD astronomical database
• TEMPO2, a new pulsar timing package. I: Overview
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• Tempo2, a new pulsar timing package. II: The timing model and precision estimates
• DSPSR: Digital Signal Processing Software for Pulsar Astronomy
• A study of 315 glitches in the rotation of 102 pulsars
• An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102
• The Star Formation History of the Small Magellanic Cloud
• An ultra-wide bandwidth (704 to 4032 MHz) receiver for the Parkes radio telescope
• Spectral properties of 441 radio pulsars
• Pulsar Wind Nebulae in the Chandra Era
• High time resolution observations of the January 2000 glitch in the Vela pulsar
• Predicting the Starquakes in PSR J0537-6910
• The Carnegie Hubble Program: The Distance and Structure of the SMC as Revealed by Mid-infrared Observations of Cepheids
• The glitch activity of neutron stars
• Pulsar Braking Indices Revisited
• Timing of young radio pulsars I: Timing noise, periodic modulation and proper motion
• Discovery of 14 radio pulsars in a survey of the Magellanic Clouds
• Pulsar spin-down: the glitch-dominated rotation of PSR J0537-6910
• Dispersion and Rotation Measure of Supernova Remnants and Magnetized Stellar Winds: Application to Fast Radio Bursts
• Pinning down the superfluid and measuring masses using pulsar glitches
• Investigation of the bi-drifting subpulses of radio pulsar B1839-04 utilising the open-source data-analysis project PSRSALSA
• Pulsar Wind Nebulae Created by Fast-Moving Pulsars
• Radio efficiency of pulsars
• Modelling pulsar glitches with realistic pinning forces: a hydrodynamical approach
• The largest glitch observed in the Crab pulsar
• ROSAT and ASCA observations of the Crab-Like Supernova Remnant N157B in the Large Magellanic Cloud
• The XMM-Newton survey of the Small Magellanic Cloud
• A spatially resolved plerionic X-ray nebula around PSR B0540-69
• Detection of an X-ray Pulsar Wind Nebula and Tail in SNR N157B
• Radio Pulsars in the Magellanic Clouds
• Discovery of a Possible Anomalous X-ray Pulsar in the Small Magellanic Cloud
• Timing of young radio pulsars II. Braking indices and their interpretation
• New XMM-Newton observations of SNRs in the SMC
• The MPIfR-MeerKAT Galactic Plane survey I -- System setup and early results
• The supernova remnant population of the Small Magellanic Cloud
• The Thousand-Pulsar-Array programme on MeerKAT IV: Polarisation properties of young, energetic pulsars
• The TRAPUM L-band survey for pulsars in Fermi-LAT gamma-ray sources
• TRAPUM discovery of thirteen new pulsars in NGC 1851 using MeerKAT
• Wide field beamformed observation with MeerKAT
• A multi-wavelength look at the young plerionic supernova remnant 0540-69.3
• IKT 16: A Composite SNR in the SMC
• The glitches and rotational history of the highly energetic young pulsar PSR J0537$-$6910
• X-ray and Rotational Luminosity Correlation and Magnetic Heating of the Radio Pulsars
• Generating quasiperiodic pulsar glitches using a state-dependent Poisson process
• PulsarX: a new pulsar searching package -I. A high performance folding program for pulsar surveys
• Pulsar polarization: a broad-band population view with the Parkes Ultra-Wideband receiver
• Discovery of a Pulsar-powered Bow Shock Nebula in the Small Magellanic Cloud Supernova Remnant DEMS5
• Targeted search for young radio pulsars in the SMC: Discovery of two new pulsars
• Discovery of the first anti-glitch event in the rotation-powered pulsar PSR B0540-69
• An updated glitch rate law inferred from radio pulsars
• The radio pulsar population of the Small Magellanic Cloud
• Physical Properties of the Supernova Remnant Population in the Small Magellanic Cloud
• IKT 16: the first X-ray confirmed composite SNR in the SMC
• The Thousand-Pulsar-Array programme on MeerKAT VII: Polarisation properties of pulsars in the Magellanic Clouds
• Measuring glitch recoveries and braking indices with Bayesian model selection
• The TRAPUM Small Magellanic Cloud pulsar survey with MeerKAT: I. Discovery of seven new pulsars and two Pulsar Wind Nebula associations
• IKT16: Discovery of a 22 ms energetic rotation-powered pulsar in the Small Magellanic Cloud
• TRAPUM upper limits on pulsed radio emission for SMC X-ray pulsar J0058-7218