2008MNRAS.387.1755W

Query : 2008MNRAS.387.1755W

2008MNRAS.387.1755W - Mon. Not. R. Astron. Soc., 387, 1755-1760 (2008/July-2)

The population of pulsars with interpulses and the implications for beam evolution.

WELTEVREDE P. and JOHNSTON S.

Abstract (from CDS):

The observed fraction of pulsars with interpulses, their period distribution and the observed pulse width versus pulse period correlation are shown to be inconsistent with a model in which the angle α between the magnetic axis and the rotation axis is random. This conclusion appears to be unavoidable, even when non-circular beams are considered. Allowing the magnetic axis to align from a random distribution at birth with a time-scale of ∼7x107 yr can, however, explain those observations well. The time-scale derived is consistent with that obtained via independent methods. The probability that a pulsar beam intersects the line of sight is a function of the angle α and therefore beam evolution has important consequences for evolutionary models and for estimations of the total number of neutron stars. The validity of the standard formula for the spin-down rate, which is independent of α, appears to be questionable.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): stars: neutron - pulsars: general - stars: rotation

Simbad objects: 29

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Number of rows : 29
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 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
2 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
3 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1
4 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 167 0
5 PSR J0834-4159 Psr 08 34 16.3 -41 59 51           ~ 34 0
6 PSR J0905-5127 Psr 09 05 51.922 -51 27 48.71           ~ 51 0
7 PSR B0906-49 Psr 09 08 35.46000 -49 13 05.0000           ~ 168 0
8 PSR B0950+08 Psr 09 53 09.31210 +07 55 36.9000           ~ 806 2
9 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 757 0
10 PSR B1124-60 Psr 11 26 52.608 -60 54 39.96           ~ 27 0
11 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
12 PSR J1549-4848 Psr 15 49 21.02700 -48 48 36.1000           ~ 55 0
13 PSR B1634-45 Psr 16 37 58.710 -45 53 27.30           ~ 60 0
14 PSR B1702-19 Psr 17 05 36.09300 -19 06 39.2000           ~ 191 1
15 PSR J1713-3945 Psr 17 13 02.4438883512 -38 44 29.816068236           ~ 20 0
16 PSR B1719-37 Psr 17 22 59.17000 -37 12 03.0000           ~ 107 0
17 PSR B1736-29 Psr 17 39 34.28500 -29 03 03.9600           ~ 86 0
18 PSR B1803-19.3 Psr 18 06 06.6 -19 20 23           ~ 13 0
19 PSR J1808-1726 Psr 18 08 42.3 -17 26 27           ~ 9 0
20 PSR B1822-09 Psr 18 25 30.62000 -09 35 22.0000           ~ 382 0
21 PSR J1828-1101 Psr 18 28 18.849 -11 01 50.90           ~ 63 0
22 PSR J1843-0702 Psr 18 43 22.44 -07 02 54.6           ~ 29 0
23 PSR J1849+0409 Psr 18 49 03.47 +04 09 42.3           ~ 20 0
24 PSR B1848+04 Psr 18 51 03.298 +04 18 12.00           ~ 45 0
25 PSR J1852-0118 Psr 18 52 17.15 -01 18 14.8           ~ 13 0
26 PSR B1910+08.4 Psr 19 13 00.50 +08 32 05.1           ~ 25 0
27 PSR J1915+1606 Psr 19 15 27.99999 +16 06 27.4034     22.5     ~ 1032 1
28 PSR B1929+10 Psr 19 32 14.0570 +10 59 33.380           ~ 801 0
29 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 252 0

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