Details
| Original language | English |
|---|---|
| Pages (from-to) | 3957-3974 |
| Number of pages | 18 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 533 |
| Issue number | 4 |
| Early online date | 6 Aug 2024 |
| Publication status | Published - Oct 2024 |
Abstract
We report new radio timing solutions from a 3-yr observing campaign conducted with the MeerKAT and Murriyang telescopes for nine Small Magellanic Cloud pulsars, increasing the number of characterized 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 J00407337 and J00487317, are energetic young pulsars with spin-down luminosities of the order of 1036 erg s-1. They both experienced a large glitch, with a change in frequency of about 30 μHz, and a frequency derivative change of order -10-14Hz 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 J00487317 confirm it is powering a new pulsar wind nebula (PWN) detected as a radio continuum source; and similarly the association of PSR J00407337 with the PWN of supernova remnant (SNR) DEM S5 (for which we present a new Chandra image) is strengthened. Finally, PSR J00407335 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 Hz. This work more than doubles the characterized population of SMC radio pulsars.
Keywords
- galaxies: individual: Small Magellanic Cloud, ISM: supernova remnants, Magellanic Clouds, pulsars: general, pulsars: individual: PSR J0040-7326, PSR J0040-7335, PSR J0040-7337, PSR J0043-7319, PSR J0044-7314, PSR J0048-7317, PSR J0051-7204, PSR J0054-7228, PSR J0105-7208, stars: neutron
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Monthly Notices of the Royal Astronomical Society, Vol. 533, No. 4, 10.2024, p. 3957-3974.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The TRAPUM Small Magellanic Cloud pulsar survey with MeerKAT
T2 - II. Nine new radio timing solutions and glitches from young pulsars
AU - Carli, E.
AU - Antonopoulou, D.
AU - Burgay, M.
AU - Keith, M. J.
AU - Levin, L.
AU - Liu, Y.
AU - Stappers, B. W.
AU - Turner, J. D.
AU - Barr, E. D.
AU - Breton, R. P.
AU - Buchner, S.
AU - Kramer, M.
AU - Padmanabh, P. V.
AU - Possenti, A.
AU - Venkatraman Krishnan, V.
AU - Venter, C.
AU - Becker, W.
AU - Maitra, C.
AU - Haberl, F.
AU - Thongmeearkom, T.
N1 - Publisher Copyright: © 2024 The Author(s).
PY - 2024/10
Y1 - 2024/10
N2 - We report new radio timing solutions from a 3-yr observing campaign conducted with the MeerKAT and Murriyang telescopes for nine Small Magellanic Cloud pulsars, increasing the number of characterized 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 J00407337 and J00487317, are energetic young pulsars with spin-down luminosities of the order of 1036 erg s-1. They both experienced a large glitch, with a change in frequency of about 30 μHz, and a frequency derivative change of order -10-14Hz 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 J00487317 confirm it is powering a new pulsar wind nebula (PWN) detected as a radio continuum source; and similarly the association of PSR J00407337 with the PWN of supernova remnant (SNR) DEM S5 (for which we present a new Chandra image) is strengthened. Finally, PSR J00407335 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 Hz. This work more than doubles the characterized population of SMC radio pulsars.
AB - We report new radio timing solutions from a 3-yr observing campaign conducted with the MeerKAT and Murriyang telescopes for nine Small Magellanic Cloud pulsars, increasing the number of characterized 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 J00407337 and J00487317, are energetic young pulsars with spin-down luminosities of the order of 1036 erg s-1. They both experienced a large glitch, with a change in frequency of about 30 μHz, and a frequency derivative change of order -10-14Hz 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 J00487317 confirm it is powering a new pulsar wind nebula (PWN) detected as a radio continuum source; and similarly the association of PSR J00407337 with the PWN of supernova remnant (SNR) DEM S5 (for which we present a new Chandra image) is strengthened. Finally, PSR J00407335 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 Hz. This work more than doubles the characterized population of SMC radio pulsars.
KW - galaxies: individual: Small Magellanic Cloud
KW - ISM: supernova remnants
KW - Magellanic Clouds
KW - pulsars: general
KW - pulsars: individual: PSR J0040-7326, PSR J0040-7335, PSR J0040-7337, PSR J0043-7319, PSR J0044-7314, PSR J0048-7317, PSR J0051-7204, PSR J0054-7228, PSR J0105-7208
KW - stars: neutron
UR - http://www.scopus.com/inward/record.url?scp=85203858886&partnerID=8YFLogxK
U2 - 10.1093/mnras/stae1897
DO - 10.1093/mnras/stae1897
M3 - Article
AN - SCOPUS:85203858886
VL - 533
SP - 3957
EP - 3974
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 4
ER -