Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- PAR Ade
- Z Ahmed
- RW Aikin
- KD Alexander
- D Barkats
- SJ Benton
- CA Bischoff
- JJ Bock
- R Bowens-Rubin
- JA Brevik
- I Buder
- E Bullock
- V Buza
- J Connors
- BP Crill
- L Duband
- C Dvorkin
- JP Filippini
- S Fliescher
- J Grayson
- M Halpern
- S Harrison
- GC Hilton
- H Hui
- KD Irwin
- KS Karkare
- E Karpel
- JP Kaufman
- BG Keating
- S Kefeli
- SA Kernasovskiy
- JM Kovac
- CL Kuo
- EM Leitch
- M Lueker
- KG Megerian
- CB Netterfield
- HT Nguyen
- R O’Brient
- RW Ogburn
- A Orlando
- C Pryke
- S Richter
- R Schwarz
- CD Sheehy
- ZK Staniszewski
- B Steinbach
- RV Sudiwala
- GP Teply
- KL Thompson
- JE Tolan
- C Tucker
- AD Turner
- AG Vieregg
- AC Weber
- DV Wiebe
- J Willmert
- CL Wong
- WLK Wu
- KW Yoon
- DOI
- 10.1103/physrevlett.116.031302
- eISSN
- 1079-7114
- ISSN
- 0031-9007
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- Physical Review Letters
- Sprache
- en
- Artikelnummer
- 031302
- Online publication date
- 2016
- Status
- Published online
- Herausgeber
- American Physical Society (APS)
- Herausgeber URL
- http://dx.doi.org/10.1103/physrevlett.116.031302
- Datum der Datenerfassung
- 2017
- Titel
- Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band
- Ausgabe der Zeitschrift
- 116
Data source: Crossref
- Other metadata sources:
-
- Abstract
- We present results from an analysis of all data taken by the BICEP2 and Keck Array cosmic microwave background (CMB) polarization experiments up to and including the 2014 observing season. This includes the first Keck Array observations at 95 GHz. The maps reach a depth of 50 nK deg in Stokes Q and U in the 150 GHz band and 127 nK deg in the 95 GHz band. We take auto- and cross-spectra between these maps and publicly available maps from WMAP and Planck at frequencies from 23 to 353 GHz. An excess over lensed ΛCDM is detected at modest significance in the 95×150 BB spectrum, and is consistent with the dust contribution expected from our previous work. No significant evidence for synchrotron emission is found in spectra such as 23×95, or for correlation between the dust and synchrotron sky patterns in spectra such as 23×353. We take the likelihood of all the spectra for a multicomponent model including lensed ΛCDM, dust, synchrotron, and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r) using priors on the frequency spectral behaviors of dust and synchrotron emission from previous analyses of WMAP and Planck data in other regions of the sky. This analysis yields an upper limit r_{0.05}<0.09 at 95% confidence, which is robust to variations explored in analysis and priors. Combining these B-mode results with the (more model-dependent) constraints from Planck analysis of CMB temperature plus baryon acoustic oscillations and other data yields a combined limit r_{0.05}<0.07 at 95% confidence. These are the strongest constraints to date on inflationary gravitational waves.
- Addresses
- School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, United Kingdom.
- Autoren
- PAR Ade
- Z Ahmed
- RW Aikin
- KD Alexander
- D Barkats
- SJ Benton
- CA Bischoff
- JJ Bock
- R Bowens-Rubin
- JA Brevik
- I Buder
- E Bullock
- V Buza
- J Connors
- BP Crill
- L Duband
- C Dvorkin
- JP Filippini
- S Fliescher
- J Grayson
- M Halpern
- S Harrison
- GC Hilton
- H Hui
- KD Irwin
- KS Karkare
- E Karpel
- JP Kaufman
- BG Keating
- S Kefeli
- SA Kernasovskiy
- JM Kovac
- CL Kuo
- EM Leitch
- M Lueker
- KG Megerian
- CB Netterfield
- HT Nguyen
- R O'Brient
- RW Ogburn
- A Orlando
- C Pryke
- S Richter
- R Schwarz
- CD Sheehy
- ZK Staniszewski
- B Steinbach
- RV Sudiwala
- GP Teply
- KL Thompson
- JE Tolan
- C Tucker
- AD Turner
- AG Vieregg
- AC Weber
- DV Wiebe
- J Willmert
- CL Wong
- WLK Wu
- KW Yoon
- Keck Array and BICEP2 Collaborations
- DOI
- 10.1103/physrevlett.116.031302
- eISSN
- 1079-7114
- Externe Identifier
- PubMed Identifier: 26849583
- Funding acknowledgements
- U.S. Department of Energy:
- JPL Research and Technology: 06-ARPA206-0040
- W.M. Keck Foundation:
- National Science Foundation: ANT-1145143 (Minnesota)
- National Science Foundation: ANT-1145248 (Stanford)
- Canada Foundation for Innovation:
- Gordon and Betty Moore Foundation:
- Harvard University:
- JPL Research and Technology: 10-SAT10-0017
- National Aeronautics and Space Administration:
- National Science Foundation: ANT-1145172 (Harvard)
- Science and Technology Facilities Council: ST/N000706/1
- Open access
- false
- ISSN
- 0031-9007
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- Physical review letters
- Schlüsselwörter
- Keck Array and BICEP2 Collaborations
- Sprache
- eng
- Medium
- Print-Electronic
- Online publication date
- 2016
- Paginierung
- 031302
- Datum der Veröffentlichung
- 2016
- Status
- Published
- Datum der Datenerfassung
- 2016
- Titel
- Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 116
Data source: Europe PubMed Central
- Abstract
- We present results from an analysis of all data taken by the BICEP2 and Keck Array cosmic microwave background (CMB) polarization experiments up to and including the 2014 observing season. This includes the first Keck Array observations at 95 GHz. The maps reach a depth of 50 nK deg in Stokes Q and U in the 150 GHz band and 127 nK deg in the 95 GHz band. We take auto- and cross-spectra between these maps and publicly available maps from WMAP and Planck at frequencies from 23 to 353 GHz. An excess over lensed ΛCDM is detected at modest significance in the 95×150 BB spectrum, and is consistent with the dust contribution expected from our previous work. No significant evidence for synchrotron emission is found in spectra such as 23×95, or for correlation between the dust and synchrotron sky patterns in spectra such as 23×353. We take the likelihood of all the spectra for a multicomponent model including lensed ΛCDM, dust, synchrotron, and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r) using priors on the frequency spectral behaviors of dust and synchrotron emission from previous analyses of WMAP and Planck data in other regions of the sky. This analysis yields an upper limit r_{0.05}<0.09 at 95% confidence, which is robust to variations explored in analysis and priors. Combining these B-mode results with the (more model-dependent) constraints from Planck analysis of CMB temperature plus baryon acoustic oscillations and other data yields a combined limit r_{0.05}<0.07 at 95% confidence. These are the strongest constraints to date on inflationary gravitational waves.
- Autoren
- PAR Ade
- Z Ahmed
- RW Aikin
- KD Alexander
- D Barkats
- SJ Benton
- CA Bischoff
- JJ Bock
- R Bowens-Rubin
- JA Brevik
- I Buder
- E Bullock
- V Buza
- J Connors
- BP Crill
- L Duband
- C Dvorkin
- JP Filippini
- S Fliescher
- J Grayson
- M Halpern
- S Harrison
- GC Hilton
- H Hui
- KD Irwin
- KS Karkare
- E Karpel
- JP Kaufman
- BG Keating
- S Kefeli
- SA Kernasovskiy
- JM Kovac
- CL Kuo
- EM Leitch
- M Lueker
- KG Megerian
- CB Netterfield
- HT Nguyen
- R O'Brient
- RW Ogburn
- A Orlando
- C Pryke
- S Richter
- R Schwarz
- CD Sheehy
- ZK Staniszewski
- B Steinbach
- RV Sudiwala
- GP Teply
- KL Thompson
- JE Tolan
- C Tucker
- AD Turner
- AG Vieregg
- AC Weber
- DV Wiebe
- J Willmert
- CL Wong
- WLK Wu
- KW Yoon
- Keck Array and BICEP2 Collaborations
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/26849583
- DOI
- 10.1103/PhysRevLett.116.031302
- eISSN
- 1079-7114
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- Phys Rev Lett
- Sprache
- eng
- Country
- United States
- Paginierung
- 031302
- Datum der Veröffentlichung
- 2016
- Status
- Published
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2016
- Titel
- Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 116
Data source: PubMed
- Beziehungen:
- Property of