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Estimates of maximum energy density of cosmological gravitational-wave backgrounds

Giblin, John T., Jr. and Thrane, Eric (2014) Estimates of maximum energy density of cosmological gravitational-wave backgrounds. Physical Review D, 90 (10). Art. No. 107502. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20150106-140411993

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Abstract

The recent claim by BICEP2 of evidence for primordial gravitational waves has focused interest on the potential for early-Universe cosmology using gravitational waves. In addition to cosmic microwave background detectors, efforts are underway to carry out gravitational-wave astronomy with pulsar timing arrays, space-based detectors, and terrestrial detectors. These efforts will probe a wide range of times in the early Universe, during which backgrounds may have been produced through processes such as phase transitions or preheating. We derive a rule of thumb (not so strong as an upper limit) governing the maximum energy density of cosmological backgrounds. For most scenarios, we expect the energy density spectrum to peak at values of Ω_(gw)(f)≲10^(−12±2). We discuss the applicability of this rule and the implications for gravitational-wave astronomy.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.90.107502 DOIArticle
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.107502PublisherArticle
Additional Information:© 2014 American Physical Society. Received 20 June 2014; published 24 November 2014. T. G. is supported by the National Science Foundation, Grant No. PHY-1068080. E. T. is a member of the LIGO Laboratory, supported by funding from the United States National Science Foundation. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation and operates under cooperative agreement Grant No. PHY-0757058.
Funders:
Funding AgencyGrant Number
NSFPHY-1068080
NSFPHY-0757058
Classification Code:PACS: 04.30.Db, 04.30.-w, 04.80.Nn, 98.80.Es
Record Number:CaltechAUTHORS:20150106-140411993
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150106-140411993
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53221
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:07 Jan 2015 00:39
Last Modified:20 Apr 2016 23:20

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