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Maximum likelihood map making with the Laser Interferometer Space Antenna
File(s)
2006.03313v1.pdf (1.72 MB)
Accepted version
Author(s)
Contaldi, Carlo R
Pieroni, Mauro
Renzini, Arianna
Cusin, Giulia
Karnesis, Nikos
Type
Journal Article
Abstract
Given the recent advances in gravitational-wave detection technologies, the detection and characterization of gravitational-wave backgrounds (GWBs) with the Laser Interferometer Space Antenna (LISA) is a real possibility. To assess the abilities of the LISA satellite network to reconstruct anisotropies of different angular scales and in different directions on the sky, we develop a map-maker based on an optimal quadratic estimator. The resulting maps are maximum likelihood representations of the GWB intensity on the sky integrated over a broad range of frequencies. We test the algorithm by reconstructing known input maps with different input distributions and over different frequency ranges. We find that, in an optimal scenario of well understood noise and high frequency, high SNR signals, the maximum scales LISA may probe are
ℓ
max
≲
15
. The map-maker also allows to test the directional dependence of LISA noise, providing insight on the directional sky sensitivity we may expect.
Date Issued
2020-08-03
Date Acceptance
2020-08-01
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2020, 102 (4), pp.043502 – 1-043502 – 13
URI
URL
DOI
ISSN
1550-2368
Publisher
American Physical Society
Start Page
043502 – 1
End Page
043502 – 13
Journal / Book Title
Physical Review D: Particles, Fields, Gravitation and Cosmology
Volume
102
Issue
4
Copyright Statement
© 2020 American Physical Society
Sponsor
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000554826900003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/P000762/1
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
ANISOTROPIES
BINARIES
Publication Status
Published
Article Number
ARTN 043502
Date Publish Online
2020-08-03