2019A&A...629A..92G


Query : 2019A&A...629A..92G

2019A&A...629A..92G - Astronomy and Astrophysics, volume 629A, 92-92 (2019/9-1)

Timing of PSR J2055+3829, an eclipsing black widow pulsar discovered with the Nancay Radio Telescope.

GUILLEMOT L., OCTAU F., COGNARD I., DESVIGNES G., FREIRE P.C.C., SMITH D.A., THEUREAU G. and BURNETT T.H.

Abstract (from CDS):

We report on the timing observations of the millisecond pulsar PSR J2055+3829 originally discovered as part of the SPAN512 survey conducted with the Nancay Radio Telescope. The pulsar has a rotational period of 2.089ms and is in a tight 3.1 h orbit around a very low mass (0.023≤mc≤0.053M, 90% c.l.) companion. Our 1.4GHz observations reveal the presence of eclipses of the radio signal of the pulsar, caused by the outflow of material from the companion, for a few minutes around superior conjunction of the pulsar. The very low companion mass, the observation of radio eclipses, and the detection of time variations of the orbital period establish PSR J2055+3829 as a "black widow" (BW) pulsar. Inspection of the radio signal from the pulsar during ingress and egress phases shows that the eclipses in PSR J2055+3829 are asymmetric and variable, as is commonly observed in other similar systems. More generally, the orbital properties of the new pulsar are found to be very similar to those of other known eclipsing BW pulsars. No gamma-ray source has been detected at the location of the pulsar in recent Fermi-LAT source catalogs. We used the timing ephemeris to search ten years of Fermi Large Area Telescope (LAT) data for gamma-ray pulsations, but were unable to detect any. This non-detection could be a consequence of the large distance of the pulsar compared to those of known gamma-ray millisecond pulsars outside of globular clusters. We finally compared the mass functions of eclipsing and non-eclipsing BW pulsars and confirmed previous findings that eclipsing BWs have higher mass functions than their non-eclipsing counterparts. Larger inclinations could explain the higher mass functions of eclipsing BWs. On the other hand, the mass function distributions of Galactic disk and globular cluster BWs appear to be consistent, suggesting, despite the very different environments, the existence of common mechanisms taking place in the last stages of evolution of BWs.

Abstract Copyright: © L. Guillemot et al. 2019

Journal keyword(s): pulsars: general - pulsars: individual: PSR J2055+3829 - binaries: eclipsing

CDS comments: PSR J2115+5448 not in SIMBAD.

Simbad objects: 43

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Number of rows : 43
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 PSR J0023+0923 Psr 00 23 16.890 +09 23 24.18           ~ 98 0
2 PSR J0023-7203J Psr 00 23 59.40735 -72 03 58.7914           ~ 81 1
3 PSR J0023-72O Psr 00 24 04.637 -72 04 53.71           ~ 58 1
4 PSR J0024-7204R Psr 00 24 05.670 -72 04 52.62           ~ 44 1
5 PSR B0021-72I Psr 00 24 07.9330 -72 04 39.669           ~ 61 1
6 PSR J0024-7204P Psr 00 24 20.0 -72 04 10           ~ 18 1
7 PSR J0251+2606 Psr 02 51 02.1 +26 05 37           ~ 21 0
8 PSR J0610-2100 Psr 06 10 13.5921 -21 00 28.016           ~ 82 0
9 PSR J0636+5129 Psr 06 36 04.84645 +51 28 59.9625           ~ 61 0
10 PSR J0952-0607 Psr 09 52 08.319 -06 07 23.49           ~ 43 0
11 PSR J1124-36 Psr 11 24 00.000 -36 00 00.00           ~ 44 0
12 PSR J1301+0833 Psr 13 01 38.26 +08 33 57.5           ~ 37 0
13 PSR J1311-3430 Psr 13 11 47.6 -34 30 35           ~ 145 1
14 PSR J1446-4701 Psr 14 46 35.7143 -47 01 26.762           ~ 57 1
15 PMN J1513-2558 Rad 15 13 53.2 -25 58 30           ~ 6 1
16 PSR J1518+0204C Psr 15 18 34.0 +02 04 58           ~ 19 0
17 PSR J1544+4937 Psr 15 44 04.166 +49 37 57.45           ~ 58 1
18 PSR J1641+3627E Psr 16 41 41.0 +36 27 37           ~ 10 0
19 PSR J1701-3006E Psr 17 01 12 -30 06.0           ~ 13 0
20 PSR J1701-3006F Psr 17 01 12 -30 06.0           ~ 15 0
21 PSR J1731-18 Psr 17 31 17.6072 -18 47 32.740           ~ 33 1
22 PSR J1745+1017 Psr 17 45 33.8371 +10 17 52.523           ~ 40 0
23 PSR J1748-2446O Psr 17 48 04.682 -24 46 51.27           ~ 20 0
24 PSR J1805+06 Psr 18 05 +06.0           ~ 3 0
25 PSR J1807-2459A Psr 18 07 20.36 -24 59 52.6           ~ 25 0
26 PSR J1810+17 Psr 18 10 37.2791131488 +17 44 37.425884136           ~ 103 0
27 PSR J1824-2452J Psr 18 24 32.8 -24 52 11           ~ 13 0
28 PSR J1824-2452G Psr 18 24 32.8 -24 52 11           ~ 10 0
29 PSR J1824-2452L Psr 18 24 32.810 -24 52 11.20           ~ 5 0
30 PSR J1836-2354A Psr 18 36 25.4452 -23 54 52.390           ~ 14 0
31 PSR B1908+00A Psr 19 11 11.02 +01 02 10.9           ~ 44 0
32 PSR J1946-5403 Psr 19 46 33.62736 -54 02 36.3948           ~ 25 0
33 PSR J1953+1846A Psr 19 53 46.44 +18 47 04.7         19.96 ~ 23 0
34 PSR J1959+2048 Psr 19 59 36.7480 +20 48 14.599   20.4       ~ 783 2
35 NAME Cyg Complex reg 20 32 +45.0           ~ 585 0
36 PSR J2048+49 Psr 20 48 +49.0           ~ 1 0
37 V* LY Aqr Psr 20 51 07.5145 -08 27 37.795           ~ 196 2
38 PSR J2052+1219 Psr 20 52 47.77844 +12 19 59.0281           ~ 24 0
39 PSR J2055+3829 Psr 20 55 10.3065540 +38 29 30.905710           ~ 8 0
40 PSR J2205+6012 Psr 22 05 35.6 +60 16 10           ~ 4 0
41 PSR J2214+3000 Psr 22 14 38.8480 +30 00 38.209           ~ 101 0
42 PSR J2241-5236 Psr 22 41 42.03161 -52 36 36.2492           ~ 101 1
43 PSR J2256-1024 Psr 22 56 56.390 -10 24 34.37           ~ 54 0

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2023.09.25-16:49:28

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