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
A study of fundamental limitations to statistical detection of redshifted H i from the epoch of reionization
Astrophysical Journal, Volume 776, No. 1, Article 6, Year 2013
Notification
URL copied to clipboard!
Description
In this paper, we explore for the first time the relative magnitudes of three fundamental sources of uncertainty, namely, foreground contamination, thermal noise, and sample variance, in detecting the H I power spectrum from the epoch of reionization (EoR). We derive limits on the sensitivity of a Fourier synthesis telescope to detect EoR based on its array configuration and a statistical representation of images made by the instrument. We use the Murchison Widefield Array (MWA) configuration for our studies. Using a unified framework for estimating signal and noise components in the H I power spectrum, we derive an expression for and estimate the contamination from extragalactic point-like sources in three-dimensional k-space. Sensitivity for EoR H I power spectrum detection is estimated for different observing modes with MWA. With 1000 hr of observing on a single field using the 128 tile MWA, EoR detection is feasible (S/N >1 for k ≲ 0.8 Mpc-1). Bandpass shaping and refinements to the EoR window are found to be effective in containing foreground contamination, which makes the instrument tolerant to imaging errors. We find that for a given observing time, observing many independent fields of view does not offer an advantage over a single field observation when thermal noise dominates over other uncertainties in the derived power spectrum. © 2013. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Thyagarajan, Nithyanandan
India, Bengaluru
Raman Research Institute
Udaya-Shankar, N.
India, Bengaluru
Raman Research Institute
Subrahmanyan, Ravi
India, Bengaluru
Raman Research Institute
United States, Socorro
National Radio Astronomy Observatory Socorro
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Arcus, Wayne R.
Australia, Perth
Curtin University
Bernardi, Gianni
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Bowman, Judd D.
United States, Tempe
Arizona State University
Briggs, Franklin H.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Canberra
The Australian National University
Bunton, John D.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Cappallo, Roger J.
United States, Westford
Mit Haystack Observatory
Corey, Brian E.
United States, Westford
Mit Haystack Observatory
DeSouza, Ludi
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Australia, Sydney
The University of Sydney
Emrich, David
Australia, Perth
Curtin University
Gaensler, B. M.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Sydney
The University of Sydney
Goeke, Robert F.
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Greenhill, Lincoln J.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Hazelton, Bryna J.
United States, Seattle
University of Washington
Herne, David E.
Australia, Perth
Curtin University
Hewitt, Jacqueline N.
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Johnston-Hollitt, Melanie
New Zealand, Wellington
Victoria University of Wellington
Kaplan, David L.A.
United States, Milwaukee
University of Wisconsin-milwaukee
Kasper, Justin C.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Kincaid, Barton B.
United States, Westford
Mit Haystack Observatory
Koenig, Ronald
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Kratzenberg, Eric
United States, Westford
Mit Haystack Observatory
Lonsdale, Colin J.
United States, Westford
Mit Haystack Observatory
Lynch, Mervyn J.
Australia, Perth
Curtin University
McWhirter, Stephen Russell
United States, Westford
Mit Haystack Observatory
Mitchell, Daniel A.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Melbourne
University of Melbourne
Morales, Miguel F.
United States, Seattle
University of Washington
Morgan, Edward H.
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Oberoi, Divya
India, Mumbai
Tata Institute of Fundamental Research, Mumbai
Ord, Stephen M.
Australia, Perth
Curtin University
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Pathikulangara, Joseph
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Remillard, Ronald A.
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Rogers, Alan E.E.
United States, Westford
Mit Haystack Observatory
Roshi, D. Anish
United States, Charlottesville
National Radio Astronomy Observatory
Salah, Joseph E.
United States, Westford
Mit Haystack Observatory
Sault, Robert J.
Australia, Melbourne
University of Melbourne
Srivani, K. S.
India, Bengaluru
Raman Research Institute
Stevens, Jamie B.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Australia, Hobart
University of Tasmania
Prabu, Thiagaraj
India, Bengaluru
Raman Research Institute
Tingay, Steven John
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Perth
Curtin University
Wayth, Randall B.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Perth
Curtin University
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Waterson, Mark F.
Australia, Perth
Curtin University
Australia, Canberra
The Australian National University
Webster, Rachel L.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Melbourne
University of Melbourne
Whitney, Alan R.
United States, Westford
Mit Haystack Observatory
Williams, Andrew J.
Australia, Perth
Curtin University
Williams, Christopherl L.M.
United States, Cambridge
Mit Kavli Institute for Astrophysics and Space Research
Wyithe, J. S.B.
Australia, Sydney
Arc Centre of Excellence for All-sky Astrophysics
Australia, Melbourne
University of Melbourne
Statistics
Citations: 113
Authors: 49
Affiliations: 18
Identifiers
Doi:
10.1088/0004-637X/776/1/6
ISSN:
0004637X