2015A&A...575A...3P


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.12CEST03:25:40

2015A&A...575A...3P - Astronomy and Astrophysics, volume 575A, 3-3 (2015/3-1)

Light-curve modelling constraints on the obliquities and aspect angles of the young Fermi pulsars.

PIERBATTISTA M., HARDING A.K., GRENIER I.A., JOHNSON T.J., CARAVEO P.A., KERR M. and GONTHIER P.L.

Abstract (from CDS):

In more than four years of observation the Large Area Telescope on board the Fermi satellite has identified pulsed γ-ray emission from more than 80 young or middle-aged pulsars, in most cases providing light curves with high statistics. Fitting the observed profiles with geometrical models can provide estimates of the magnetic obliquity α and of the line of sight angle ζ, yielding estimates of the radiation beaming factor and radiated luminosity. Using different γ-ray emission geometries (Polar Cap, Slot Gap, Outer Gap, One Pole Caustic) and core plus cone geometries for the radio emission, we fit γ-ray light curves for 76 young or middle-aged pulsars and we jointly fit their γ-ray plus radio light curves when possible. We find that a joint radio plus γ-ray fit strategy is important to obtain (α,ζ) estimates that can explain simultaneously detectable radio and γ-ray emission: when the radio emission is available, the inclusion of the radio light curve in the fit leads to important changes in the (α,ζ) solutions. The most pronounced changes are observed for Outer Gap and One Pole Caustic models for which the γ-ray only fit leads to underestimated α or ζ when the solution is found to the left or to the right of the main α-ζ plane diagonal respectively. The intermediate-to-high altitude magnetosphere models, Slot Gap, Outer Gap, and One pole Caustic, are favoured in explaining the observations. We find no apparent evolution of α on a time scale of 106 years. For all emission geometries our derived γ-ray beaming factors are generally less than one and do not significantly evolve with the spin-down power. A more pronounced beaming factor vs. spin-down power correlation is observed for Slot Gap model and radio-quiet pulsars and for the Outer Gap model and radio-loud pulsars. The beaming factor distributions exhibit a large dispersion that is less pronounced for the Slot Gap case and that decreases from radio-quiet to radio-loud solutions. For all models, the correlation between γ-ray luminosity and spin-down power is consistent with a square root dependence. The γ-ray luminosities obtained by using the beaming factors estimated in the framework of each model do not exceed the spin-down power. This suggests that assuming a beaming factor of one for all objects, as done in other studies, likely overestimates the real values. The data show a relation between the pulsar spectral characteristics and the width of the accelerator gap. The relation obtained in the case of the Slot Gap model is consistent with the theoretical prediction.

Abstract Copyright:

Journal keyword(s): stars: neutron - pulsars: general - gamma rays: stars - radiation mechanisms: non-thermal - methods: statistical

Simbad objects: 78

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Number of rows : 78

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PSR J0007+7303 Psr 00 06 34.20 +73 11 06.6           ~ 153 1
2 PSR J0106+4855 Psr 01 06 25.030 +48 55 52.01           ~ 36 0
3 PSR J0205+6449 Psr 02 05 37.92 +64 49 42.8           ~ 220 1
4 PSR J0248+6021 Psr 02 48 18.642 +60 21 34.70           ~ 40 1
5 PSR J0357+32 Psr 03 57 52.161 +32 05 23.63           ~ 78 0
6 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4889 1
7 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5732 4
8 PSR J0622+3749 Psr 06 22 10.411 +37 49 14.60           ~ 30 1
9 PSR J0631+10 Psr 06 31 27.369 +10 37 05.63           ~ 109 0
10 PSR J0633+0632 Psr 06 33 44.136 +06 32 29.48           ~ 66 1
11 NAME Geminga Psr 06 33 54.153 +17 46 12.91           ~ 1112 0
12 PSR B0656+14 Psr 06 59 48.1960 +14 14 19.400   24.85 24.90     ~ 783 1
13 PSR J0729-1448 Psr 07 29 16.45 -14 48 36.8           ~ 45 0
14 PSR J0734-1559 Psr 07 34 45.693 -15 59 18.43           ~ 22 0
15 PSR B0740-28 Psr 07 42 49.0730 -28 22 43.510           ~ 361 0
16 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2110 1
17 PSR B0906-49 Psr 09 08 35.4290 -49 13 05.060           ~ 128 0
18 PSR J0940-5428 Psr 09 40 58.22 -54 28 40.6           ~ 38 0
19 PSR J1016-58 Psr 10 16 21.266 -58 57 11.70           ~ 96 3
20 PSR J1019-5749 Psr 10 19 52.14 -57 49 05.9           ~ 28 0
21 PSR J1023-5746 Psr 10 23 02.388 -57 46 09.86           ~ 49 0
22 PSR J1028-5819 Psr 10 28 27.888 -58 19 06.14           ~ 92 1
23 PSR J1044-5737 Psr 10 44 32.791 -57 37 19.39           ~ 30 0
24 PSR B1046-58 Psr 10 48 13.0500 -58 32 06.200           ~ 239 0
25 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 690 0
26 PSR J1105-6107 Psr 11 05 26.1400 -61 07 48.940           ~ 96 0
27 PSR J1112-6103 Psr 11 12 14.81 -61 03 31.1           ~ 55 0
28 PSR J1119-6127 Psr 11 19 14.30 -61 27 49.5           ~ 350 1
29 PSR J1124-5916 Psr 11 24 39.1 -59 16 20           ~ 138 1
30 PSR J1135-6055 Psr 11 35 08.428 -60 55 36.50           ~ 23 1
31 PSR J1357-6429 Psr 13 57 02.525 -64 29 29.89           ~ 125 1
32 PSR J1410-6132 Psr 14 10 24.000 -61 32 00.00           ~ 116 1
33 PSR J1413-6205 Psr 14 13 30.135 -62 05 37.02           ~ 37 0
34 PSR J1418-6058 Psr 14 18 42.725 -60 58 01.89           ~ 106 0
35 PSR J1420-6048 Psr 14 20 08.190 -60 48 14.85           ~ 166 0
36 PSR J1429-5911 Psr 14 29 58.564 -59 11 36.02           ~ 26 1
37 PSR J1459-60 Psr 14 59 30.222 -60 53 19.87           ~ 45 0
38 PSR J1509-5850 Psr 15 09 27.153 -58 50 56.05           ~ 101 0
39 PSR B1509-58 Psr 15 13 55.52 -59 08 08.8     13.06     ~ 806 1
40 PSR J1531-5610 Psr 15 31 27.91 -56 10 55.0           ~ 40 0
41 PSR J1620-4927 Psr 16 20 41.594 -49 27 36.21           ~ 31 0
42 PSR J1648-4611 Psr 16 48 22.02 -46 11 16.0           ~ 52 0
43 PSR J1702-4128 Psr 17 02 52.52 -41 28 48.2           ~ 49 0
44 PSR B1706-44 Psr 17 09 42.7460 -44 29 07.200     13.30     ~ 591 1
45 PSR J1718-3825 Psr 17 18 13.576 -38 25 18.56           ~ 81 0
46 PSR B1727-33 Psr 17 30 32.559 -33 50 39.40           ~ 101 1
47 PSR J1732-31 Psr 17 32 33.551 -31 31 20.85           ~ 62 0
48 PSR J1741-2054 Psr 17 41 57.282 -20 54 04.11           ~ 97 1
49 PSR J1746-3239 Psr 17 46 55.143 -32 39 36.36           ~ 22 0
50 PSR J1747-2958 Psr 17 47 15.869 -29 58 00.93           ~ 110 1
51 PSR B1757-24 Psr 18 01 00.016 -24 51 27.50           ~ 222 1
52 PSR J1803-2149 Psr 18 03 09.632 -21 49 00.87           ~ 27 0
53 PSR J1809-2332 Psr 18 09 50.250 -23 32 22.68     21.47 19.61 17.48 M5 81 0
54 PSR J1813-1246 Psr 18 13 23.768 -12 46 00.63           ~ 74 0
55 PSR J1826-1256 Psr 18 26 08.570 -12 56 33.53           ~ 104 1
56 SNR G021.5-00.9 SNR 18 33 33.612 -10 34 07.69           ~ 405 1
57 PSR J1835-1106 Psr 18 35 18.287 -11 06 15.10           ~ 56 0
58 PSR J1836+5925 Psr 18 36 13.661 +59 25 29.77           ~ 127 1
59 PSR J1838-0537 Psr 18 38 56.02 -05 37 09.0           ~ 30 0
60 PSR J1846+0919 Psr 18 46 25.864 +09 19 48.99           ~ 25 0
61 PSR J1907+06 Psr 19 07 54.751 +06 02 15.79           ~ 95 0
62 PSR B1951+32 Psr 19 52 58.181 +32 52 40.98           ~ 558 2
63 PSR J1954+2836 Psr 19 54 19.144 +28 36 04.84           ~ 40 0
64 PSR J1957+5033 Psr 19 57 38.391 +50 33 21.24           ~ 26 0
65 PSR J1958+2846 Psr 19 58 40.1020152614 +28 45 54.090901230           ~ 57 0
66 PSR J2021+3651 Psr 20 21 05.40 +36 51 04.5           ~ 156 1
67 PSR J2021+4026 Psr 20 21 30.496 +40 26 53.56           ~ 211 2
68 PSR J2028+3332 Psr 20 28 19.876 +33 32 04.23           ~ 54 0
69 PSR J2030+3641 Psr 20 30 00.241 +36 41 27.30           ~ 28 2
70 PSR J2030+4415 Psr 20 30 51.396 +44 15 38.73           ~ 42 0
71 [MT91] 213 Be* 20 32 13.1248987067 +41 27 24.343749507 13.12 13.08 11.266     B0Vp 227 0
72 PSR J2043+2740 Psr 20 43 43.5 +27 40 56           ~ 98 0
73 PSR J2055+25 Psr 20 55 48.948 +25 39 58.93           ~ 40 0
74 PSR J2111+4606 Psr 21 11 24.125 +46 06 30.66           ~ 31 0
75 PSR J2139+4716 Psr 21 39 55.878 +47 16 13.12           ~ 26 0
76 PSR J2229+6114 Psr 22 29 05.262 +61 14 08.48           ~ 183 2
77 PSR J2238+5903 Psr 22 38 28.089 +59 03 43.37           ~ 25 0
78 PSR J2240+5832 Psr 22 40 42.939 +58 32 37.52           ~ 22 0

    Equat.    Gal    SGal    Ecl

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2021.05.12-03:25:40

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