The large scale polarization explorer (LSPE) for CMB measurements: performance forecast
Abstract
[Abridged] The measurement of the polarization of the Cosmic Microwave Background radiation is one of the current frontiers in cosmology. In particular, the detection of the primordial B-modes, could reveal the presence of gravitational waves in the early Universe. The detection of such component is at the moment the most promising technique to probe the inflationary theory describing the very early evolution of the Universe. We present the updated performance forecast of the Large Scale Polarization Explorer (LSPE), a program dedicated to the measurement of the CMB polarization. LSPE is composed of two instruments: Strip, a radiometer-based telescope on the ground in Tenerife, and SWIPE (Short-Wavelength Instrument for the Polarization Explorer) a bolometer-based instrument designed to fly on a winter arctic stratospheric long-duration balloon. The program is among the few dedicated to observation of the Northern Hemisphere, while most of the international effort is focused into ground-based observation in the Southern Hemisphere. Measurements are currently scheduled in Winter 2021/22 for SWIPE, with a flight duration up to 15 days, and in Summer 2021 with two years observations for Strip. We describe the main features of the two instruments, identifying the most critical aspects of the design, in terms of impact into performance forecast. We estimate the expected sensitivity of each instrument and propagate their combined observing power to the sensitivity to cosmological parameters, including the effect of scanning strategy, component separation, residual foregrounds and partial sky coverage. We also set requirements on the control of the most critical systematic effects and describe techniques to mitigate their impact. LSPE can reach a sensitivity in tensor-to-scalar ratio of , and improve constrains on other cosmological parameters.
Cite
@article{arxiv.2008.11049,
title = {The large scale polarization explorer (LSPE) for CMB measurements: performance forecast},
author = {The LSPE collaboration and G. Addamo and P. A. R. Ade and C. Baccigalupi and A. M. Baldini and P. M. Battaglia and E. S. Battistelli and A. Baù and P. de Bernardis and M. Bersanelli and M. Biasotti and A. Boscaleri and B. Caccianiga and S. Caprioli and F. Cavaliere and F. Cei and K. A. Cleary and F. Columbro and G. Coppi and A. Coppolecchia and F. Cuttaia and G. D'Alessandro and G. De Gasperis and M. De Petris and V. Fafone and F. Farsian and L. Ferrari Barusso and F. Fontanelli and C. Franceschet and T. C. Gaier and L. Galli and F. Gatti and R. Genova-Santos and M. Gerbino and M. Gervasi and T. Ghigna and D. Grosso and A. Gruppuso and R. Gualtieri and F. Incardona and M. E. Jones and P. Kangaslahti and N. Krachmalnicoff and L. Lamagna and M. Lattanzi and C. H. López-Caraballo and M. Lumia and R. Mainini and D. Maino and S. Mandelli and M. Maris and S. Masi and S. Matarrese and A. May and L. Mele and P. Mena and A. Mennella and R. Molina and D. Molinari and G. Morgante and U. Natale and F. Nati and P. Natoli and L. Pagano and A. Paiella and F. Panico and F. Paonessa and S. Paradiso and A. Passerini and M. Perez-de-Taoro and O. A. Peverini and F. Piacentini and L. Piccirillo and G. Pisano and D. Poletti and G. Presta and S. Realini and N. Reyes and J. A. Rubino-Martin and M. Sandri and S. Sartor and F. Pezzotta and G. Polenta and A. Rocchi and A. Schillaci and G. Signorelli and B. Siri and M. Soria and F. Spinella and V. Tapia and A. Tartari and A. C. Taylor and L. Terenzi and M. Tomasi and E. Tommasi and C. Tucker and D. Vaccaro and D. M. Vigano and F. Villa and G. Virone and N. Vittorio and A. Volpe and R. E. J. Watkins and A. Zacchei and M. Zannoni},
journal= {arXiv preprint arXiv:2008.11049},
year = {2021}
}
Comments
Submitted to JCAP. Abstract abridged for arXiv submission