Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Multi-scale clean: A Comparison of its performance against classical clean on galaxies using things
Astronomical Journal, Volume 136, No. 6, Year 2008
Notification
URL copied to clipboard!
Description
A practical evaluation of the multi-scale CLEAN algorithm is presented. The data used in the comparisons are taken from The H I Nearby Galaxy Survey. The implementation of multi-scale CLEAN in the CASA software package is used, although comparisons are made against the very similar multi-resolution CLEAN algorithm implemented in AIPS. Both are compared against the classical CLEAN algorithm (as implemented in AIPS). The results of this comparison show that several of the well-known characteristics and issues of using classical CLEAN are significantly lessened (or eliminated completely) when using the multi-scale CLEAN algorithm. Importantly, multi-scale CLEAN significantly reduces the effects of the clean "bowl" that is caused by missing short-spacings, and the "pedestal" of low-level un-cleaned flux (which affects flux scales and resolution). Multi-scale CLEAN can clean down to the noise level without the divergence suffered by classical CLEAN. We discuss practical applications of the added contrast provided by multi-scale CLEAN using two selected astronomical examples: H I holes in the interstellar medium and anomalous gas structures outside the main galactic disk. © 2008. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Rich, J. W.
Australia, Canberra
The Australian National University
de Blök, Willem J.G.
South Africa, Cape Town
University of Cape Town
Cornwell, Timothy J.
Australia, Sydney
Australia Telescope National Facility
Brinks, Elias
United Kingdom, Hatfield
University of Hertfordshire
Walter, Fabian W.
Germany, Heidelberg
Max Planck Institute for Astronomy
Bagetakos, Ioannis
United Kingdom, Hatfield
University of Hertfordshire
Kennicutt, Robert C.
United Kingdom, Cambridge
Institute of Astronomy
Statistics
Citations: 50
Authors: 7
Affiliations: 6
Identifiers
Doi:
10.1088/0004-6256/136/6/2897
ISSN:
00046256
Study Design
Cross Sectional Study
Study Approach
Quantitative