Details
| Original language | English |
|---|---|
| Pages (from-to) | 2570-2581 |
| Number of pages | 12 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 533 |
| Issue number | 3 |
| Early online date | 9 Aug 2024 |
| Publication status | Published - Sept 2024 |
Abstract
The Large Magellanic Cloud (LMC) presents a unique environment for pulsar population studies due to its distinct star formation characteristics and proximity to the Milky Way. As part of the TRAPUM (TRAnsients and PUlsars with MeerKAT) Large Survey Project, we are using the core array of the MeerKAT radio telescope (MeerKAT) to conduct a targeted search of the LMC for radio pulsars at L-band frequencies, 856–1712 MHz. The excellent sensitivity of MeerKAT, coupled with a 2-h integration time, makes the survey 3 times more sensitive than previous LMC radio pulsar surveys. We report the results from the initial four survey pointings which have resulted in the discovery of seven new radio pulsars, increasing the LMC radio pulsar population by 30 per cent. The pulse periods of these new pulsars range from 278 to 1690 ms, and the highest dispersion measure is 254.20 pc cm−3. We searched for, but did not find any significant pulsed radio emission in a beam centred on the SN 1987A remnant, establishing an upper limit of 6.3 μJy on its minimum flux density at 1400 MHz.
Keywords
- galaxies: individual: Large Magellanic Cloud, Magellanic Clouds, pulsars: general, pulsars: individual: PSR J0509−6838, PSR J0509−6845, PSR J0518−6939, PSR J0518−6946, PSR J0519−6931, PSR J0534−6905
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. 3, 09.2024, p. 2570-2581.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The TRAPUM Large Magellanic Cloud pulsar survey with MeerKAT
T2 - I. Survey set-up and first seven pulsar discoveries
AU - Prayag, V.
AU - Levin, L.
AU - Geyer, M.
AU - Stappers, B. W.
AU - Carli, E.
AU - Barr, E. D.
AU - Breton, R. P.
AU - Buchner, S.
AU - Burgay, M.
AU - Kramer, M.
AU - Possenti, A.
AU - Krishnan, V. Venkatraman
AU - Venter, C.
AU - Behrend, J.
AU - Chen, W.
AU - Horn, D. M.
AU - Padmanabh, P. V.
AU - Ridolfi, A.
N1 - Publisher Copyright: © 2024 The Author(s).
PY - 2024/9
Y1 - 2024/9
N2 - The Large Magellanic Cloud (LMC) presents a unique environment for pulsar population studies due to its distinct star formation characteristics and proximity to the Milky Way. As part of the TRAPUM (TRAnsients and PUlsars with MeerKAT) Large Survey Project, we are using the core array of the MeerKAT radio telescope (MeerKAT) to conduct a targeted search of the LMC for radio pulsars at L-band frequencies, 856–1712 MHz. The excellent sensitivity of MeerKAT, coupled with a 2-h integration time, makes the survey 3 times more sensitive than previous LMC radio pulsar surveys. We report the results from the initial four survey pointings which have resulted in the discovery of seven new radio pulsars, increasing the LMC radio pulsar population by 30 per cent. The pulse periods of these new pulsars range from 278 to 1690 ms, and the highest dispersion measure is 254.20 pc cm−3. We searched for, but did not find any significant pulsed radio emission in a beam centred on the SN 1987A remnant, establishing an upper limit of 6.3 μJy on its minimum flux density at 1400 MHz.
AB - The Large Magellanic Cloud (LMC) presents a unique environment for pulsar population studies due to its distinct star formation characteristics and proximity to the Milky Way. As part of the TRAPUM (TRAnsients and PUlsars with MeerKAT) Large Survey Project, we are using the core array of the MeerKAT radio telescope (MeerKAT) to conduct a targeted search of the LMC for radio pulsars at L-band frequencies, 856–1712 MHz. The excellent sensitivity of MeerKAT, coupled with a 2-h integration time, makes the survey 3 times more sensitive than previous LMC radio pulsar surveys. We report the results from the initial four survey pointings which have resulted in the discovery of seven new radio pulsars, increasing the LMC radio pulsar population by 30 per cent. The pulse periods of these new pulsars range from 278 to 1690 ms, and the highest dispersion measure is 254.20 pc cm−3. We searched for, but did not find any significant pulsed radio emission in a beam centred on the SN 1987A remnant, establishing an upper limit of 6.3 μJy on its minimum flux density at 1400 MHz.
KW - galaxies: individual: Large Magellanic Cloud
KW - Magellanic Clouds
KW - pulsars: general
KW - pulsars: individual: PSR J0509−6838, PSR J0509−6845, PSR J0518−6939, PSR J0518−6946, PSR J0519−6931, PSR J0534−6905
UR - http://www.scopus.com/inward/record.url?scp=85202900303&partnerID=8YFLogxK
U2 - 10.1093/mnras/stae1917
DO - 10.1093/mnras/stae1917
M3 - Article
AN - SCOPUS:85202900303
VL - 533
SP - 2570
EP - 2581
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 3
ER -