2023MNRAS.525..211B

Query : 2023MNRAS.525..211B

2023MNRAS.525..211B - Mon. Not. R. Astron. Soc., 525, 211-220 (2023/October-2)

High-resolution VLBI astrometry of pulsar scintillation screens with the θ - θ transform.

BAKER D., BRISKEN W., VAN KERKWIJK M.H., VAN LIESHOUT R. and PEN U.-L.

Abstract (from CDS):

The recent development of $\theta - \theta$ techniques in pulsar scintillometry has opened the door for new high-resolution imaging techniques of the scattering medium. By solving the phase retrieval problem and recovering the wavefield from a pulsar dynamic spectrum, the Doppler shift, time delay, and phase offset of individual images can be determined. However, the results of phase retrieval from a single dish are only known up to a constant phase rotation, which introduces extra parameters when doing astrometry using very long baseline interferometry. We present an extension to previous $\theta - \theta$ methods using the interferometric visibilities between multiple stations to calibrate the wavefields. When applied to existing data for PSR B0834+06, we measure the effective screen distance and lens orientation with five times greater precision than was possible in previous work.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): methods: data analysis - techniques: high angular resolution - pulsars: general - pulsars: individual: B0834+06 - ISM: structure

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 B0834+06 Psr 08 37 05.64620 +06 10 15.8700           ~ 472 0

Query : 2023MNRAS.525..211B

Basic data :
PSR B0834+06 -- Pulsar
Other object types: otypes_help 		Psr (PSR,PULS), Rad (NVSS)
ICRS coord. (ep=J2000) : 		08 37 05.64620 +06 10 15.8700 (Radio) [ 1 60 90 ] B 2020MNRAS.494..228L
FK4 coord. (ep=B1950 eq=1950) : 		08 34 26.20139 +06 20 43.1673 [ 1 60 90 ]
Gal coord. (ep=J2000) : 		219.72078247 +26.27234035 [ 1 60 90 ]
Proper motions mas/yr : 		2.16 51.64 [19 13 90] E 2016MNRAS.458.1289L
Parallaxes (mas): 		1.63 [15] E 2016MNRAS.458.1289L
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Identifiers (4) :
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PSR B0834+06 NVSS J083704+061013 PSR J0837+0610 PULS CP 0834

References (472 between 1850 and 2026) (Total 472)
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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Plx : 1   

   

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Data at NED - NASA/IPAC Extragalactic Database : PSR B0834+06

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NVSS J083704+061013

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