Showing results for: [ McConnell, David ]
We will carry out high spectral resolution observations of the Large Magellanic Cloud with at least 12 antennas of the Australian SKA Pathfinder (ASKAP) telescope. This will be prefaced by a small pil... moreot program (possibly starting with a smaller bandwidth) to prepare software and techniques. The data collected will primarily serve the GASKAP survey team but data products will be released into the CSIRO ASKAP Science Data Archive (CASDA) for general use.
Australia Square Kilometre Array Pathfinder - AS037 - ASKAP Early Science at High Spectral Resolution - Published 04 Nov 2019
These data are a combined mosaic of two overlapping ASKAP tiles covering the GAMA-23 field.
The following is copied from the validation notes of the source SBIDs and also apply to these data.
These ... moredata represent a test observation with the full ASKAP array. While it may be useful for science purposes the primary goal of the release is to seek feedback on data quality from the science community. Although the image approaches expected noise levels in most areas, a common feature of early ASKAP data has been some low-level artefacts (at ~1%) very close to bright sources (a few hundred mJy and above). These artefacts generally appear as radial stripes and rapidly fade away from the source. The origin of these artefacts is yet to be determined, but they do not seem to emulate any known instrumental effect taken into account in commonly used wideband/widefield calibration and imaging software packages (such as ASKAPsoft, casa etc.). The spectral indices given in the catalogues were derived from Taylor-term imaging, which is a technique not yet widely used in radio astronomy. It has been identified that the distribution of the spectral indices in these catalogues deviates significantly from expectations for reasons that are not yet understood. Fitting spectra to sources in the continuum cubes is recommended to attain more reliable spectral indices. While the commissioning team investigates the cause of these issues in detail, we do not wish to hold the release of otherwise good quality data. Hence these test observations are being released, but with the validation flag set to “uncertain” — meaning user discretion is necessary in the interpretation for science purposes. Users should perform their own analysis of the flux scale, source positions and spectral indices given. The ASKAP operations team would be glad to receive feedback on any issues discovered.less
Australia Square Kilometre Array Pathfinder - AS034 - ASKAP Early Science Broadband Survey - Published 19 Jun 2019
This collection contains data accompanying the paper "A single fast radio burst localized to a massive galaxy at cosmological distance" by Bannister et al (2019) - in Science (manuscript number aaw590... more3).
It contains the following directories. Please consult the README.txt in the directory directory to find out more details on file names/conventions, data formats etc.
FRB180924/ - Data used to find and localise FRB180924
visibilities/ - DIFX correlated visibilities used to calibrate and localize the FRB - i.e. the 7 datasets described in the supplementary
filterbanks/ - filterbanks formed from the incoherent sum of antennas, containing the data in which FRB180924 was originally found
images/ - Images of FRB180924 and in-field sources made from the above visibilities
radio/ATCA - Visibilities and images taken with ATCA.
radio/ATCA/Astrometry - ATCA Images of in-field sources used verify the FRB180924 astrometry
radio/ATCA/4cm and images of the FRB180924 field obtained at 4cm.
radio/askap - Images of the FRB180924 field taken with ASKAP in normal (slow time) observations.
optical/images - FORS2 image of FRB180924 host
For more information please contact email@example.com
CASS Astrophysics Program Operations - - Published 19 Jun 2019
We propose to carry out a wideband (approximately 700 -1800 MHz) early science survey in full polarisation mode with at least 12 antennas of the Australian SKA Pathfinder (ASKAP) telescope. We will be... moregin with a small pilot program (starting with a smaller number of telescopes and possibly a smaller bandwidth) in order to test and prepare software required to carry out the full survey. These data will serve the EMU, POSSUM, FLASH and VAST survey teams.less
Australia Square Kilometre Array Pathfinder - AS034 - ASKAP Early Science Broadband Survey - Published 27 Sep 2018
We will carry out an HI early science survey of several regions of the sky with at least 12 antennas of the Australian SKA Pathfinder (ASKAP) telescope. We will begin with a small pilot program (possi... morebly starting with a smaller bandwidth) in order to test and prepare software required to carry out the full survey. The data collected will primarily serve the WALLABY, FLASH and VAST survey teams.
Australia Square Kilometre Array Pathfinder - AS035 - ASKAP Early Science Widefield HI Survey - Published 08 Jul 2017
This proposal is for ASKAP science commissioning observations taken with Mk II feeds together ASKAP antennas.
Australia Square Kilometre Array Pathfinder - AS033 - ASKAP Science Commissioning - Published 20 Oct 2016
The Boolardy Engineering Test Array (BETA; Hotan et al. 2014) is a six-antenna prototype of the Australian SKA Pathnder (ASKAP) telescope. The ASKAP Commissioning and Early Science team will use BETA ... morefor a limited number of science observations that will exploit the unique wide-eld capabilities of BETA between 700 and 1800 MHz.less
Australia Square Kilometre Array Pathfinder - AS031 - BETA Science Observations - Published 02 Nov 2015
Forming pulsar flux density standards
Australia Telescope National Facility - P489 - Forming pulsar flux density standards - Published 14 Sep 2013