# 2006A&A...453..679R

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 Query : 2006A&A...453..679R

2006A&A...453..679R - Astronomy and Astrophysics, volume 453, 679-686 (2006/7-2)

The topology and polarisation of subbeams associated with the drifting'' subpulse emission of pulsar B0943+10. IV. Q-to-B-mode recovery dynamics.

RANKIN J.M. and SULEYMANOVA S.A.

Abstract (from CDS):

Pulsar B0943+10 is well known for its B'' (burst) mode, characterized by accurately drifting subpulses, in contrast to its chaotic Q'' (quiet) mode. Six new Arecibo observations at 327MHz with durations of 2+h each have shed considerable light on the modal dynamics of this pulsar. Of these, three were found to be exclusively B'' mode, and three were discovered to exhibit transitions from the Q'' to the B'' mode. One of these observations has permitted us to determine the circulation time of the subbeam carousel in the Q'' mode for the first time, at some 36.4±0.9 stellar rotation periods. The onset of the B'' mode is then observed to commence similarly in all three observations. The initial circulation time is about 36 periods and relaxes to nearly 38 periods in a roughly exponential fashion with a characteristic time of some 1.2h. This is the longest characteristic time ever found in a mode-switching pulsar. Moreover, just after the B''-mode onset the pulsar exhibits a symmetrical resolved-double profile form with a somewhat stronger trailing component, but this second component slowly dies away leaving the usual single B''-mode profile with the longitude of the magnetic axis falling at about its trailing half power point. Thus it would appear that Q-to-B- and B-to-Q-transitions have different characteristic times. Some speculations are given on the nature of this slow modal alternation.

Journal keyword(s): magnetohydrodynamics (MHD) - plasmas - pulsars: general - pulsars: individual: B0943+10 - radiation mechanism: nonthermal - polarization

Full paper

 Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 PSR B0031-07 Psr 00 34 08.9100 -07 21 56.000           ~ 306 0
2 PSR B0329+54 Psr 03 32 59.3370698592 +54 34 45.028206408           ~ 618 1
3 PSR B0826-34 Psr 08 28 16.6 -34 17 07           ~ 146 0
4 PSR B0943+10 Psr 09 46 07.31 +09 51 57.3           ~ 325 1
5 PSR B1237+25 Psr 12 39 40.386 +24 53 49.87           ~ 448 0
6 PSR B1944+17 Psr 19 46 53.044 +18 05 41.24           ~ 225 0
7 PSR B2016+28 Psr 20 18 03.8999255016 +28 39 54.940329468           ~ 345 0
8 PSR B2303+30 Psr 23 05 58.324 +31 00 01.76           ~ 192 0
9 PSR B2319+60 Psr 23 21 55.213 +60 24 30.71     13.80     ~ 183 0

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2023.03.27-06:52:34