elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Flux density measurements of gigahertz-peaked spectra candidate Pulsars at 610 MHz using an interferometric imaging technique

Dembska, M. and Basu, R. and Kijak, J. and Lewandowski, W. (2015) Flux density measurements of gigahertz-peaked spectra candidate Pulsars at 610 MHz using an interferometric imaging technique. Monthly Notices of the Royal Astronomical Society, 449 (2), pp. 1869-1875. Oxford University Press. DOI: 10.1093/mnras/stv333 ISSN 0035-8711

[img] PDF - Registered users only
525kB

Abstract

We conducted radio interferometric observations of six pulsars at 610 MHz using the Giant Metrewave Radio Telescope. All these objects were claimed or suspected to be gigahertzpeaked spectra (GPS) pulsars. For half of the sources in our sample, interferometric imaging is the only way to estimate their flux at 610 MHz due to strong pulse scatter-broadening. In our case, these pulsars have very high dispersion measure values and we present their spectra with, for the first time, low-frequency measurements. The remaining three pulsars were observed at low frequencies using the conventional pulsar flux measurement method. The interferometric imaging technique allowed us to re-examine their fluxes at 610 MHz. We were able to confirm the GPS feature in the PSR B1823−13 spectrum and select a GPS candidate pulsar. These results clearly demonstrate that the interferometric imaging technique can be successfully applied to estimate the flux density of pulsars even in the presence of strong scattering.

Item URL in elib:https://elib.dlr.de/103070/
Document Type:Article
Title:Flux density measurements of gigahertz-peaked spectra candidate Pulsars at 610 MHz using an interferometric imaging technique
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dembska, M.marta.dembska (at) dlr.deUNSPECIFIED
Basu, R.Institute of Astronomy, University of Zielona Góra, Zielona Góra, PolandUNSPECIFIED
Kijak, J.Institute of Astronomy, University of Zielona Góra, Zielona Góra, PolandUNSPECIFIED
Lewandowski, W.Institute of Astronomy, University of Zielona Góra, Zielona Góra, PolandUNSPECIFIED
Date:2015
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:449
DOI :10.1093/mnras/stv333
Page Range:pp. 1869-1875
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:pulsars: general – pulsars: individual: B1750−24, B1800−21, B1815−14, B1822−14, B1823−13, B1849+00
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment, R - Vorhaben Systemkonditionierung
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systemkonditionierung
Deposited By: Dembska, Marta
Deposited On:12 Feb 2016 12:17
Last Modified:06 Sep 2019 15:17

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.