2002A&A...387..169V

Query : 2002A&A...387..169V

2002A&A...387..169V - Astronomy and Astrophysics, volume 387169-178 (2002/5-3)

Null-induced mode changes in PSR B0809+74.

VAN LEEUWEN A.G.J., KOUWENHOVEN M.L.A., RAMACHANDRAN R., RANKIN J.M. and STAPPERS B.W.

Abstract (from CDS):

We have found that there are two distinct emission modes in PSR B0809+74. Beside its normal and most common mode, the pulsar emits in a significantly different quasi-stable mode after most or possibly all nulls, occasionally for over 100 pulses. In this mode the pulsar is brighter, the subpulse separation is less, the subpulses drift more slowly and the pulse window is shifted towards earlier longitudes. We can now account for several previously unexplained phenomena associated with the nulling-drifting interaction: the unexpected brightness of the first active pulse and the low post-null driftrate. We put forward a new interpretation of the subpulse-position jump over the null, indicating that the speedup time scale of the post-null drifting is much shorter than previously thought. The speedup time scale we find is no longer discrepant with the time scales found for the subpulse-drift slowdown and the emission decay around the null.

Abstract Copyright: ∼

Journal keyword(s): stars: neutron - pulsars: general - pulsars: individual: PSR B0809+74

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR B0809+74 Psr 08 14 59.500 +74 29 05.70           ~ 425 0

Query : 2002A&A...387..169V

Basic data :
PSR B0809+74 -- Pulsar
Other object types: otypes_help 		Psr (PSR,PULS), Rad (NVSS)
ICRS coord. (ep=J2000) : 		08 14 59.500 +74 29 05.70 [ ] D 2004MNRAS.353.1311H
FK4 coord. (ep=B1950 eq=1950) : 		08 09 02.929 +74 38 11.51 [ ]
Gal coord. (ep=J2000) : 		139.997940 +31.617744 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 102 [~] / z(~) 0.000340 [~] / cz 102.02 [~]
   D 2008ARep...52..736S
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Identifiers (6) :
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PSR B0809+74 PSR B0808+74 PULS CP 0809
NVSS J081458+742905 PSR J0814+7429 PULS CP 0808

References (425 between 1850 and 2026) (Total 425)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Data at NED - NASA/IPAC Extragalactic Database : PSR B0809+74

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NVSS J081458+742905

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