@article{10902/27705,
year = {2022},
url = {https://hdl.handle.net/10902/27705},
abstract = {We present constraints on the tensor-to-scalar ratio  r  using a combination of BICEP/Keck 2018 (BK18) and Planck PR4 data allowing us to fit for  r  consistently with the six parameters of the  ? CDM  model. We discuss the sensitivity of constraints on  r  to uncertainties in the  ? CDM  parameters as defined by the Planck data. In particular, we are able to derive a constraint on the reionization optical depth  ?  and thus propagate its uncertainty into the posterior distribution for  r . While Planck sensitivity to  r  is slightly lower than the current ground-based measurements, the combination of Planck with BK18 and baryon-acoustic-oscillation data yields results consistent with  r = 0  and tightens the constraint to  r < 0.032  at 95% confidence.},
organization = {Planck is a project of the European Space Agency (ESA) with instruments provided by two scientific consortia funded by ESA member states and led by Principal Investigators from France and Italy, telescope reflectors provided through a collaboration between ESA and a scientific consortium led and funded by Denmark, and additional contributions from NASA (USA). We gratefully acknowledge support from the CNRS/IN2P3 Computing Center for providing computing and data-processing resources needed for this work. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231. Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (Grant No. 80NM0018D0004).},
publisher = {American Physical Society},
publisher = {Physical Review D, 2022, 105, 083524},
title = {Improved limits on the tensor-to-scalar ratio using BICEP and Planck data},
author = {Tristram, M. and Banday, A.J. and Górski, K.M. and Keskitalo, R. and Lawrence, C.R. and Andersen, K.J. and Barreiro Vilas, Rita Belén and Borrill, J. and Colombo, L.P.L. and Fernández Cobos, Raúl and Eriksen, H.K. and Martínez González, Enrique and Partridge, B. and Scott, D. and Svalheim, T.L. and Wehus, I.K.},
}