2026A&A...706A.113D


Query : 2026A&A...706A.113D

2026A&A...706A.113D - Astronomy and Astrophysics, volume 706A113 (2026/2-1)

A survey for radio pulsars and transients in the 10 pc region around Sgr A*.

DESVIGNES G., EATOUGH R.P., MEN Y.P., ABBATE F., KARUPPUSAMY R., KRAMER M., LIU K., SHAO L., TORNE P. and WHARTON R.S.

Abstract (from CDS):

Here we report on a new survey for pulsars and transients in the 10 pc region around Sgr A∗ using the Effelsberg radio telescope at frequencies between 4 and 8 GHz. Our calibrated full-Stokes data were searched for pulsars and transients using PULSARX, TRANSIENTX, and PRESTO. Polarisation information is used in the scoring of the candidates. Our periodicity acceleration and jerk searches allowed us to maintain good sensitivity towards binary pulsars in ≳10-h orbits. In addition, we performed a dedicated search in linear polarisation for slow transients. While our searches yielded no new discovery beyond the redetection of the magnetar SGR J1745-2900, we report on a faint single pulse candidate in addition to several weak periodicity search candidates. After thoroughly assessing our survey's sensitivity, we determined that it is still not sensitive to a population of millisecond pulsars. Next generation radio interferometers can overcome the limitations of traditional single-dish pulsar searches of the Galactic Centre.

Abstract Copyright: © The Authors 2026

Journal keyword(s): methods: data analysis - pulsars: general - galaxy: center

Simbad objects: 13

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Number of rows : 13
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 J1744-2946 Psr 17 44 15.502 -29 46 51.65           ~ 6 0
2 PSR J1745-2910 Psr 17 45 16 -29 10.0           ~ 11 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
5 PSR J1745-2900 Psr 17 45 40.1640 -29 00 29.818           ~ 358 0
6 PSR J1745-2912 Psr 17 45 50 -29 12.0           ~ 14 0
7 PSR J1746-2849 Psr 17 46 03.7 -28 49 19           ~ 22 0
8 PSR J1746-2850 Psr 17 46 06.6 -28 50 42           ~ 18 0
9 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 561 0
10 PSR J1746-2829 Psr 17 46 15.0 -28 29 32           ~ 3 0
11 NAME Galactic Center Radio Arc Rad 17 46 16.9 -28 48 52           ~ 132 0
12 PSR J1746-2856 Psr 17 46 49.50 -28 56 31.0           ~ 28 0
13 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1

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