2015A&A...583A.105M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST02:07:03

2015A&A...583A.105M - Astronomy and Astrophysics, volume 583A, 105-105 (2015/11-1)

VLT polarimetry observations of the middle-aged pulsar PSR B0656+14.

MIGNANI R.P., MORAN P., SHEARER A., TESTA V., SLOWIKOWSKA A., RUDAK B., KRZESZOWKI K. and KANBACH G.

Abstract (from CDS):

Optical polarisation measurements are key tests for different models of the pulsar magnetosphere. Furthermore, comparing the relative orientation of the phase-averaged linear polarisation direction and the pulsar proper motion vector may unveil a peculiar alignment, clearly seen in the Crab pulsar. Our goal is to obtain the first measurement of the phase-averaged optical linear polarisation of the fifth brightest optical pulsar, PSR B0656+14, which also has a precisely measured proper motion, and to verify a possible alignment between the polarisation direction and the proper motion vector. We carried out observations with the Very Large Telescope (VLT) to measure the phase-averaged optical polarisation degree (PD) and position angle (PA) of PSR B0656+14. We measured a PD of 11.9%±5.5% and a PA of 125.8°±13.2°, measured east of north. Albeit of marginal significance, this is the first measurement of the phase-averaged optical PD for this pulsar. Moreover, we found that the PA of the phase-averaged polarisation vector is close to that of the pulsar proper motion (93.12°±0.38°). Deeper observations are needed to confirm our polarisation measurement of PSR B0656+14, whereas polarisation measurements for more pulsars will better assess possible correlations of the polarisation degree with the pulsar parameters.

Abstract Copyright:

Journal keyword(s): pulsars: individual: PSR B0656+14 - pulsars: general - polarization

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4808 1
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5596 4
3 PSR B0540-69 Psr 05 40 10.84 -69 19 54.2           ~ 797 3
4 PSR B0656+14 Psr 06 59 48.183 +14 14 21.54   24.85 24.90     ~ 759 1
5 NAME Vela XYZ Rad 08 34.0 -45 50           ~ 1110 2
6 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545           ~ 2057 1
7 PSR B1509-58 Psr 15 13 55.52 -59 08 08.8           ~ 796 1

    Equat.    Gal    SGal    Ecl

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2020.07.10-02:07:03

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