2002A&A...388..483S


Query : 2002A&A...388..483S

2002A&A...388..483S - Astronomy and Astrophysics, volume 388, 483-491 (2002/6-3)

Microlensing neutron stars.

SCHWARZ D.J. and SEIDEL D.

Abstract (from CDS):

We investigate the chances that neutron stars act as the lens in a gravitational microlensing event towards the galactic bulge or a spiral arm. The observation of neutron stars by means of gravitational microlensing would allow the estimation of neutron star masses independently of the property of being a pulsar in a binary system. We estimate the contribution of neutron stars to the optical depth and the lensing rate based on two different models of pulsar distribution in the galaxy. Since only a small fraction of all neutron stars are pulsars, it is unlikely to find a pulsar that acts as a microlens by chance. A position comparison of known radio pulsars with observed microlensing candidates towards the galactic bulge and spiral arms shows no candidate pairs, which is consistent with the theoretical expectation. To improve the probability of microlensing a pulsar, we suggest a search for gravitational microlensing events of known nearby high proper motion pulsars. The pulsar PSR J1932+1059 is a good candidate for an astrometric detection of gravitational lensing.

Abstract Copyright:

Journal keyword(s): gravitational lensing - stars: neutron - stars: pulsars: individual: PSR J1932+1059

Simbad objects: 19

goto Full paper

goto View the references in ADS

Number of rows : 19
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 USNO-A2.0 0375-01566415 * 04 37 15.568 -47 15 07.08           ~ 1 0
2 PSR J0437-47 Psr 04 37 15.7994581776 -47 15 08.544351636           DC 829 0
3 RX J0720.4-3125 N* 07 20 24.961 -31 25 50.21   26.1   27.0   ~ 292 0
4 PSR B0823+26 Psr 08 26 51.438 +26 37 22.83           ~ 483 1
5 PSR B1133+16 Psr 11 36 03.0720 +15 51 15.500           ~ 635 0
6 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 437 0
7 PSR B1804-27 Psr 18 07 08.5000 -27 15 02.000           ~ 41 0
8 RX J1856.6-3754 Psr 18 56 35.11 -37 54 30.5     25.7     ~ 413 0
9 GSC2 N023210363839 * 19 32 13.132 +10 59 26.71           ~ 1 0
10 USNO-A2.0 0975-15207539 * 19 32 13.1828958816 +10 59 37.541149188           ~ 1 0
11 USNO-A2.0 0975-15208295 * 19 32 13.5975611736 +10 59 39.167607300           ~ 1 0
12 GSC 01060-01374 * 19 32 13.7583075360 +10 59 28.080908412   15.4 13.4     K5II/III 3 1
13 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 722 0
14 GSC2 N023210364008 * 19 32 14.2110124872 +10 59 36.937078044           ~ 1 0
15 PSR B2223+65 Psr 22 25 52.36 +65 35 33.8           ~ 310 0
16 USNO-A2.0 1500-09063417 * 22 25 52.5542059992 +65 35 19.098645000           ~ 1 0
17 GSC2 N013123248640 * 22 25 52.572 +65 35 19.15           ~ 1 0
18 NAME Galactic Bulge reg ~ ~           ~ 3895 0
19 OGLE BUL-SC18 2757 * ~ ~           ~ 1 0

To bookmark this query, right click on this link: simbad:objects in 2002A&A...388..483S and select 'bookmark this link' or equivalent in the popup menu


2022.08.10-08:07:54

© Université de Strasbourg/CNRS

    • Contact