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VLA observations at 333 MHz: A Search for pancakes
Published online by Cambridge University Press: 12 April 2016
Abstract
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The P-band is the most recently completed observing band at the VLA. The aperture efficiency of the antennas is 0.4 and the system temperature is ∼ 130 K. The primary beam is slightly off-axis and its half-power width is steeply frequency dependent, which induces abnormal spectral indices on off-axis (≥ 1°) sources. We have searched for Zel’dovich “pancakes” and reached a level of ΔSrms ∼ 3.5 mJy for spectral channels of width Δν ∼ 100 kHz. We find no pancake with MHI ≳5 × 1014 M⊙.
- Type
- Imaging
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- Copyright
- Copyright © Astronomical Society of the Pacific 1991
References
Cornwell, T.J. and Perley, R.A. (1990), in “Digital Image Synthesis and Inverse Optics”, Arthur F., Gmitro, Paul S., Idell, Ivan J., LaHaie, Eds., Proc. SPIE
1351, p706.Google Scholar
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