Characterisation of Long Baseline Calibrators at 2.3 GHz
| dc.contributor.author | HUNGWE, F. | |
| hal.structure.identifier | US Naval Observatory [US NAVAL OBSERVATORY] | |
| dc.contributor.author | OJHA, R. | |
| dc.contributor.author | BOOTH, R. S. | |
| dc.contributor.author | BIETENHOLZ, M. F. | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | COLLIOUD, A. | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | CHARLOT, P. | |
| dc.contributor.author | BOBOLTZ, D. | |
| hal.structure.identifier | US Naval Observatory [US NAVAL OBSERVATORY] | |
| dc.contributor.author | FEY, A. L. | |
| dc.date.created | 2011-06-14 | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0035-8711 | |
| dc.description.abstractEn | We present a detailed multi-epoch analysis of 31 potential southern hemisphere radio calibrators that were originally observed as part of a program to maintain the International Celestial Reference Frame (ICRF). At radio wavelengths, the primary calibrators are Active Galactic Nuclei (AGN), powerful radio emitters which exist at the centre of most galaxies. These are known to vary at all wavelengths at which they have been observed. By determining the amount of radio source structure and variability of these AGN, we determine their suitability as phase calibrators for long baseline radio interferometry at 2.3 GHz. For this purpose, we have used a set of complementary metrics to classify these 31 southern sources into five categories pertaining to their suitability as VLBI calibrators. We find that all of the sources in our sample would be good interferometric calibrators and almost ninety per cent would be very good calibrators. | |
| dc.language.iso | en | |
| dc.publisher | Oxford University Press (OUP): Policy P - Oxford Open Option A | |
| dc.subject.en | Astrophysics | |
| dc.subject.en | Cosmology and Extragalactic Astrophysics | |
| dc.title.en | Characterisation of Long Baseline Calibrators at 2.3 GHz | |
| dc.type | Article de revue | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM] | |
| dc.identifier.arxiv | 1106.2669 | |
| bordeaux.journal | Monthly Notices of the Royal Astronomical Society | |
| bordeaux.page | 2113-2120 | |
| bordeaux.volume | 418 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00606073 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00606073v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Monthly%20Notices%20of%20the%20Royal%20Astronomical%20Society&rft.date=2011&rft.volume=418&rft.issue=4&rft.spage=2113-2120&rft.epage=2113-2120&rft.eissn=0035-8711&rft.issn=0035-8711&rft.au=HUNGWE,%20F.&OJHA,%20R.&BOOTH,%20R.%20S.&BIETENHOLZ,%20M.%20F.&COLLIOUD,%20A.&rft.genre=article |
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