2003ApJ...584..418G


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST10:50:12

2003ApJ...584..418G - Astrophys. J., 584, 418-426 (2003/February-2)

Understanding the radio emission geometry of multiple-component radio pulsars from retardation and aberration effects.

GUPTA Y. and GANGADHARA R.T.

Abstract (from CDS):

We have conducted a detailed analysis of the emission geometry of a handful of radio pulsars that have prominent, multiple-component profiles at meter wavelengths. From careful determination of the total number of emission components and their locations in pulse longitude, we find that all of the six pulsars show clear evidence for retardation and aberration effects in the conal emission beams. Using this information, coupled with a dipolar field geometry, we obtain estimates of the height and transverse location in the magnetosphere for each of the emitting cones in these pulsars. These results support our earlier conclusions for PSR B0329+54 in that we find successive outer cones (in cases of multiple-cone pulsars) being emitted at higher altitudes in the magnetosphere. The range of inferred heights is from ∼200 to 2200 km. The set of ``active'' field lines from which the conal emissions originate are located in the region from ∼0.22 to ∼0.74 times the polar cap radius. At the neutron star surface, these conal rings map to radii of a few to several tens of meters, and the separation between successive rings is about 10-20 m. We discuss the implications of these findings for the understanding of the pulsar emission geometry and for current theories and models of the emission mechanism.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: General - Radiation Mechanisms: Nonthermal - Stars: Magnetic Fields - Stars: Neutron

Simbad objects: 17

goto Full paper

goto View the reference in ADS

Number of rows : 17

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 B0105+68 Psr 01 08 29.500 +69 05 52.63           ~ 26 0
2 PSR B0329+54 Psr 03 32 59.3462817079 +54 34 45.047901390           ~ 588 1
3 PSR B0450-18 Psr 04 52 34.1150 -17 59 23.300           ~ 172 0
4 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 134 0
5 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 421 0
6 PSR B1541+09 Psr 15 43 38.815 +09 29 16.50           ~ 183 0
7 PSR B1700-32 Psr 17 03 22.5200 -32 41 48.300           ~ 92 0
8 PSR B1737+13 Psr 17 40 07.3455 +13 11 56.690           ~ 156 0
9 PSR B1821+05 Psr 18 23 30.9731 +05 50 24.310           ~ 111 0
10 PSR B1826-17 Psr 18 29 43.1670 -17 51 01.000           ~ 105 0
11 PSR B1857-26 Psr 19 00 47.5440 -26 00 44.200           ~ 158 0
12 PSR B1916+14 Psr 19 18 23.638 +14 45 06.00           ~ 117 0
13 PSR B1946+35 Psr 19 48 25.0067 +35 40 11.057           ~ 157 0
14 PSR B2002+31 Psr 20 04 52.286 +31 37 10.01           ~ 125 0
15 PSR B2003-08 Psr 20 06 16.3300 -08 07 01.000           ~ 74 0
16 PSR B2045-16 Psr 20 48 35.7700 -16 16 47.000           ~ 289 0
17 PSR B2111+46 Psr 21 13 24.2 +46 44 09           ~ 190 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2003ApJ...584..418G and select 'bookmark this link' or equivalent in the popup menu


2021.04.18-10:50:13

© Université de Strasbourg/CNRS

    • Contact