2009MNRAS.393.1617K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST14:08:11

2009MNRAS.393.1617K - Mon. Not. R. Astron. Soc., 393, 1617-1624 (2009/March-2)

On the aberration-retardation effects in pulsars.

KRZESZOWSKI K., MITRA D., GUPTA Y., KIJAK J., GIL J. and ACHARYYA A.

Abstract (from CDS):

The magnetospheric locations of pulsar radio emission region are not well known. The actual form of the so-called radius-to-frequency mapping should be reflected in the aberration-retardation (A/R) effects that shift and/or delay the photons depending on the emission height in the magnetosphere. Recent studies suggest that in a handful of pulsars the A/R effect can be discerned with respect to the peak of the central core emission region. To verify these effects in an ensemble of pulsars, we launched a project analysing multifrequency total intensity pulsar profiles obtained from the new observations from the Giant Meterwave Radio Telescope (GMRT), Arecibo Observatory (AO) and archival European Pulsar Network (EPN) data. For all these profiles, we measure the shift of the outer cone components with respect to the core component, which is necessary for establishing the A/R effect. Within our sample of 23 pulsars, seven show the A/R effects, 12 of them (doubtful cases) show a tendency towards this effect, while the remaining four are obvious counterexamples. The counterexamples and doubtful cases may arise from uncertainties in the determination of the location of the meridional plane and/or the core emission component. Hence, it appears that the A/R effects are likely to operate in most pulsars from our sample. We conclude that in cases where those effects are present the core emission has to originate below the conal emission region.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): radiation mechanism: non-thermal-methods: data analysis - stars: neutron - pulsars: general

CDS comments: In table 1 : PSR B1848+08 is a misprint for PSR B1848+04.

Simbad objects: 33

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Number of rows : 33

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 B0329+54 Psr 03 32 59.3462817079 +54 34 45.047901390           ~ 588 1
2 PSR B0402+61 Psr 04 06 30.046 +61 38 40.92           ~ 76 0
3 PSR B0410+69 Psr 04 15 55.653 +69 54 09.89           ~ 37 0
4 PSR B0450-18 Psr 04 52 34.1150 -17 59 23.300           ~ 172 0
5 PSR B0621-04 Psr 06 24 20.028 -04 24 50.45           ~ 61 0
6 PSR B0656+14 Psr 06 59 48.1960 +14 14 19.400   24.85 24.90     ~ 780 1
7 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 134 0
8 PSR B0950+08 Psr 09 53 09.2970 +07 55 36.400           ~ 701 2
9 PSR B1039-19 Psr 10 41 36.196 -19 42 13.61           ~ 65 0
10 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 421 0
11 PSR B1508+55 Psr 15 09 25.7 +55 31 33           ~ 275 1
12 PSR B1541+09 Psr 15 43 38.815 +09 29 16.50           ~ 183 0
13 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 156 0
14 PSR B1738-08 Psr 17 41 22.555 -08 40 31.80           ~ 75 0
15 PSR B1821+05 Psr 18 23 30.9731 +05 50 24.310           ~ 111 0
16 PSR B1831-04 Psr 18 34 25.6320 -04 26 15.200           ~ 81 0
17 PSR B1839+09 Psr 18 41 55.9380 +09 12 08.300           ~ 107 0
18 PSR B1848+04 Psr 18 51 03.298 +04 18 12.00           ~ 36 0
19 PSR B1857-26 Psr 19 00 47.5440 -26 00 44.200           ~ 158 0
20 PSR B1859+03 Psr 19 01 31.7700 +03 31 04.960           ~ 133 0
21 PSR B1911+13 Psr 19 13 24.3574 +14 00 52.720           ~ 58 0
22 PSR B1916+14 Psr 19 18 23.638 +14 45 06.00           ~ 117 0
23 PSR B1917+00 Psr 19 19 50.6820 +00 21 39.600           ~ 92 0
24 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 216 0
25 PSR B1946+35 Psr 19 48 25.0067 +35 40 11.057           ~ 156 0
26 PSR B2002+31 Psr 20 04 52.286 +31 37 10.01           ~ 125 0
27 PSR B2020+28 Psr 20 22 37.0671 +28 54 23.104           ~ 286 1
28 PSR B2045-16 Psr 20 48 35.7700 -16 16 47.000           ~ 289 0
29 PSR B2053+36 Psr 20 55 31.3552 +36 30 21.489           ~ 90 0
30 PSR B2053+21 Psr 20 55 39.151 +22 09 27.22           ~ 44 0
31 PSR B2111+46 Psr 21 13 24.2 +46 44 09           ~ 190 1
32 PSR B2315+21 Psr 23 17 57.828 +21 49 48.03           ~ 91 0
33 PSR B2319+60 Psr 23 21 55.213 +60 24 30.71     13.80     ~ 172 0

    Equat.    Gal    SGal    Ecl

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2021.04.14-14:08:11

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