GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523

Surnis MP, Joshi BC, McLaughlin MA, Lorimer DR, Moochickal Ambalappat K, Manoharan PK, Naidu A (2018)
Monthly Notices of the Royal Astronomical Society 478(4): 4433-4441.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Surnis, Mayuresh P; Joshi, Bhal Chandra; McLaughlin, Maura A; Lorimer, Duncan R; Moochickal Ambalappat, KrishnakumarUniBi ; Manoharan, P K; Naidu, Arun
Abstract / Bemerkung
We report the results of a blind pulsar survey carried out with the Giant Metrewave Radio Telescope (GMRT) at 325 MHz. The survey covered about 10 per cent of the region between Galactic longitude 45° < l < 135° and Galactic latitude 1° < |b| < 10° with a dwell time of 1800 s, resulting in the detection of 28 pulsars. One of these, PSR J1838+1523, was previously unknown and has a period of 549 ms and a dispersion measure of 68 pc cm−3. We also present the timing solution of this pulsar obtained from multifrequency timing observations carried out with the GMRT and the Ooty Radio Telescope. The measured flux density of this pulsar is 4.3±1.8 and 1.2±0.7 mJy at 325 and 610 MHz, respectively. This implies a spectral index of −2 ±0.8, thus making the expected flux density at 1.4 GHz to be about 0.2 mJy, which would be just detectable in the high-frequency pulsar surveys like the Northern High Time Resolution Universe pulsar survey. This discovery underlines the importance of low-frequency pulsar surveys in detecting steep spectrum pulsars, thus providing complementary coverage of the pulsar population.
Erscheinungsjahr
2018
Zeitschriftentitel
Monthly Notices of the Royal Astronomical Society
Band
478
Ausgabe
4
Seite(n)
4433-4441
ISSN
0035-8711
eISSN
1365-2966
Page URI
https://pub.uni-bielefeld.de/record/2953648

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Surnis MP, Joshi BC, McLaughlin MA, et al. GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523. Monthly Notices of the Royal Astronomical Society. 2018;478(4):4433-4441.
Surnis, M. P., Joshi, B. C., McLaughlin, M. A., Lorimer, D. R., Moochickal Ambalappat, K., Manoharan, P. K., & Naidu, A. (2018). GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523. Monthly Notices of the Royal Astronomical Society, 478(4), 4433-4441. https://doi.org/10.1093/mnras/sty1301
Surnis, M. P., Joshi, B. C., McLaughlin, M. A., Lorimer, D. R., Moochickal Ambalappat, K., Manoharan, P. K., and Naidu, A. (2018). GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523. Monthly Notices of the Royal Astronomical Society 478, 4433-4441.
Surnis, M.P., et al., 2018. GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523. Monthly Notices of the Royal Astronomical Society, 478(4), p 4433-4441.
M.P. Surnis, et al., “GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523”, Monthly Notices of the Royal Astronomical Society, vol. 478, 2018, pp. 4433-4441.
Surnis, M.P., Joshi, B.C., McLaughlin, M.A., Lorimer, D.R., Moochickal Ambalappat, K., Manoharan, P.K., Naidu, A.: GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523. Monthly Notices of the Royal Astronomical Society. 478, 4433-4441 (2018).
Surnis, Mayuresh P, Joshi, Bhal Chandra, McLaughlin, Maura A, Lorimer, Duncan R, Moochickal Ambalappat, Krishnakumar, Manoharan, P K, and Naidu, Arun. “GMRT Galactic Plane Pulsar and Transient Survey and the discovery of PSR J1838+1523”. Monthly Notices of the Royal Astronomical Society 478.4 (2018): 4433-4441.

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