PhysRevD.83.043003.pdf (383.11 kB)
Detecting and distinguishing topological defects in future data from the CMBPol satellite
journal contribution
posted on 2023-06-07, 23:01 authored by Pia Mukherjee, Jon Urrestilla, Martin Kunz, Andrew R Liddle, Neil Bevis, Mark HindmarshMark HindmarshThe proposed CMBPol mission will be able to detect the imprint of topological defects on the CMB provided the contribution is sufficiently strong. We quantify the detection threshold for cosmic strings and for textures, and analyze the satellite's ability to distinguish between these different types of defects. We also assess the level of danger of misidentification of a defect signature as from the wrong defect type or as an effect of primordial gravitational waves. A 0.002 fractional contribution of cosmic strings to the CMB temperature spectrum at multipole ten, and similarly a 0.001 fractional contribution of textures, can be detected and correctly identified at the 3 level. We also confirm that a tensor contribution of r=0.0018 can be detected at over 3, in agreement with the CMBPol mission concept study. These results are supported by a model selection analysis.
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Journal
Physical Review DISSN
1550-7998Publisher
American Physical SocietyExternal DOI
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4Volume
83Page range
043003Department affiliated with
- Physics and Astronomy Publications
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- Yes
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- Yes
Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
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