The TRAPUM large magellanic cloud pulsar survey with MeerKAT I: survey set-up and first seven pulsar discoveries

被引：2

作者：

Prayag, V ^{[1
,2
]}

Levin, L. ^{[3
]}

Geyer, M. ^{[1
,2
]}

Stappers, B. W. ^{[3
]}

Carli, E. ^{[3
]}

Barr, E. D. ^{[4
]}

Breton, R. P. ^{[3
]}

Buchner, S. ^{[5
]}

Burgay, M. ^{[6
]}

Kramer, M. ^{[4
]}

Possenti, A. ^{[6
]}

Krishnan, V. Venkatraman ^{[4
]}

Venter, C. ^{[7
,8
]}

Behrend, J. ^{[4
]}

Chen, W. ^{[4
]}

Horn, D. M. ^{[5
]}

Padmanabh, P., V ^{[4
,9
,10
]}

Ridolfi, A. ^{[4
,6
]}

机构：

[1] Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Cape Town, South Africa

[2] Univ Cape Town, Dept Math & Appl Math, High Energy Phys, Cosmol & Astrophys Theory HEPCAT Grp, ZA-7700 Cape Town, South Africa

[3] Univ Manchester, Jodrell Bank Ctr Astrophys, Dept Phys & Astron, Manchester M13 9PL, England

[4] Max Planck Inst Radioastron, Auf Hugel 69, D-53121 Bonn, Germany

[5] South African Radio Astron Observ SARAO, Observ, 2 Fir St, Black River Pk, ZA-7925 Cape Town, South Africa

[6] INAF, Osservatorio Astron Cagliari, via Sci 5, I-09047 Selargius, CA, Italy

[7] North West Univ, Ctr Space Res, Private Bag X6001, ZA-2520 Potchefstroom, South Africa

[8] Natl Inst Theoret & Computat Sci NITheCS, ZA-7604 Stellenbosch, South Africa

[9] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-30167 Hannover, Germany

[10] Leibniz Univ Hannover, D-30167 Hannover, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2024年 / 533卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

pulsars: general; pulsars: individual: PSR J0509; 6838; PSR J0509; 6845; PSR J0518; 6939; 6946; PSR J0519; 6931; PSR J0534; 6905; galaxies: individual: Large Magellanic Cloud; Magellanic Clouds; X-RAY BINARIES; SUPERNOVA REMNANT; RADIO PULSAR; WIND NEBULA; STAR-FORMATION; XMM-NEWTON; SN; 1987A; MULTIFREQUENCY OBSERVATIONS; OPTICAL PULSATIONS; COMPACT OBJECT;

D O I：

10.1093/mnras/stae1917

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 mu Jy on its minimum flux density at 1400 MHz.

引用

页码：2570 / 2581

页数：12

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