Preliminary VLA limits on the Sunyaev-Zel'dovich effect in Abell 2218

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165259· OSTI ID:5954774

Partridge, R B; Perley, R A; Mandolesi, N; Delpino, F

In an attempt to apply radio interferometry or Fourier-synthesis methods to the search for the Suniaev-Zel'dovich effect, the VLA is used in its D configuration to map Abell cluster 2218 at 6 cm. The phase center of the maps was offset from the cluster center to minimize systematic effects seen in other deep surveys. The presence of radio sources in the cluster (and other apparently instrumental effects discussed here) limited the sensitivity to the Suniaev-Zel'dovich effect to Delta T = about 0.7 mK at an angular resolution of 60-80 arcsec. 24 references.

• Research Organization: Haverford College, PA; National Radio Astronomy Observatory, Socorro, NM; CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy; Bologna Universita, Italy
• OSTI ID: 5954774
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 317; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTENNAS
COSMIC GASES
COSMIC RADIO SOURCES
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUIDS
GALAXY CLUSTERS
GASES
INTERFEROMETRY
INTERGALACTIC SPACE
MAPS
RADIATIONS
RADIO EQUIPMENT
RADIO TELESCOPES
RADIOWAVE RADIATION
SPACE
TELESCOPES