Edge detection, cosmic strings and the south pole telescope

Journal Article · Sun Feb 15 00:00:00 EST 2009 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2009/02/009· OSTI ID:22156894

Stewart, Andrew; Brandenberger, Robert ^[1]

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1. Physics Department, McGill University, Montreal, QC, H3A 2T8 (Canada)

We develop a method of constraining the cosmic string tension G{mu} which uses the Canny edge detection algorithm as a means of searching CMB temperature maps for the signature of the Kaiser-Stebbins effect. We test the potential of this method using high resolution, simulated CMB temperature maps. By modeling the future output from the South Pole Telescope project (including anticipated instrumental noise), we find that cosmic strings with G{mu} > 5.5 Multiplication-Sign 10{sup -8} could be detected.

• OSTI ID: 22156894
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 02; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ALGORITHMS
BACKGROUND NOISE
DETECTION
RELICT RADIATION
RESOLUTION
SIMULATION
TELESCOPES