Table 1: Local (r<1 kpc) population of young (age <4.25 Myrs) isolated neutron stars.
Source name Period, Count rate, $\dot P$ Distance Agea Ref.
  s ROSAT cts s-1 10-15 ss-1 kpc Myrs  
RX J185635-3754 - 3.64 - 0.117d $\sim$0.5 [1, 2]
RX J0720.4-3125 8.37 1.69 $\sim$30-60 - - [1, 3]
1RXS J130848.6+212708 (RBS 1223) 10.3 0.29 <104? - - [1, 4]
RX J1605.3+3249 (RBS 1556) - 0.88 - - - [1]
RX J0806.4-4123 11.37 0.38 - - - [1, 5]
RX J0420.0-5022 22.7 0.11 - - - [1]
1RXS J214303.7+065419 (RBS 1774) - 0.18 - - - [6]
PSR B0633+17 (Geminga) 0.237 0.54c 10.97 0.16d 0.34 [7]
RX J1836.2+5925 (3EG J1835+5918) - 0.015 - - - [8]
PSR B0833-45 (Vela) 0.089 3.4c 124.88 0.294d 0.01 [7, 9, 10]
PSR B0656+14 0.385 1.92c 55.01 0.762e 0.11 [7, 10]
PSR B1055-52 0.197 0.35c 5.83 $\sim$1b 0.54 [7, 10]
PSR B1929+10 0.227 0.012c 1.16 0.33d 3.1 [7, 10]
PSR J0056+4756 0.472 - 3.57 0.998e 2.1 [10]
PSR J0454+5543 0.341 - 2.37 0.793e 2.3 [10]
PSR J1918+1541 0.371 - 2.54 0.684e 2.3 [10]
PSR J2048-1616 1.962 - 10.96 0.639e 2.8 [10]
PSR J1848-1952 4.308 - 23.31 0.956e 2.9 [10]
PSR J0837+0610 1.274 - 6.8 0.722e 3.0 [10]
PSR J1908+0734 0.212 - 0.82 0.584e 4.1 [10]
a Radio pulsar ages are estimated as $P/(2\dot P)$,
for RX J1856-3754 the age estimate comes from kinematical considerations (Walter & Lattimer 2002).
b Distance to PSR 1055-52 is uncertain ($\sim$0.9-1.5 kpc)
c Total count rate (blackbody + non-thermal)
d Distances from parallactic measurements
e Distances from the dispersion measure
(1) Treves et al.  (2000),  (2) Kaplan et al. (2002),  (3) Zane et al. (2002), (4) Hambaryan et al. (2001), Haberl (2003),
(5) Haberl & Zavlin (2002), (6) Zampieri et al. (2001), (7) Becker & Trümper (1997), (8) Mirabal & Halpern (2001),
(9) Pavlov et al. (2001), (10) ATNF Pulsar Catalogue, (http://wwwatnf.atnf.csiro.au/research/pulsar/catalogue/)

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