2023ApJ...954..160S


Query : 2023ApJ...954..160S

2023ApJ...954..160S - Astrophys. J., 954, 160 (2023/September-2)

The GMRT High Resolution Southern Sky Survey for Pulsars and Transients. VI. Discovery of Nulling, Localization, and Timing of PSR J1244-4708.

SINGH S., ROY J., SHARMA S.S., BHATTACHARYYA B. and KUDALE S.

Abstract (from CDS):

Many pulsars in the known population exhibit nulling, which is characterized by a sudden cessation and subsequent restoration of radio emission. In this work, we present the localization, timing, and emission properties of a pulsar discovered by the GMRT High Resolution Southern Sky survey: J1244-4708. Moreover, we find that this pulsar shows nulling, with a nulling fraction close to 60%. A quasiperiodicity is also seen in the nulling from this pulsar with two timescales. We demonstrate the broadband nature of nulling in this pulsar using simultaneous observations in band-3 (300-500 MHz) and band-4 (550-750 MHz) with the upgraded GMRT. We also present a comparison of the efficiency of various search approaches such as single pulse search, fast folding algorithm (FFA)-based search, and fast Fourier transform-based search to search for nulling pulsars. We demonstrated that the FFA search is advantageous for detecting extreme nulling pulsars, which is also confirmed with multiple epochs of observations for the nulling pulsars using the GMRT.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Radio pulsars - Observational astronomy - Astronomical techniques

Simbad objects: 3

goto Full paper

goto View the references in ADS

Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 PSR J1242-4712 Psr 12 42 12.80 -47 12 17.3           ~ 7 0
2 PSR J1244-4708 Psr 12 44 27.236 -47 08 01.90           ~ 1 0
3 PSR J1936-30 Psr 19 37.0 -29 37           ~ 2 0

To bookmark this query, right click on this link: simbad:objects in 2023ApJ...954..160S and select 'bookmark this link' or equivalent in the popup menu