Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey
| Autor: | The Polarbear Collaboration, Adachi, S., Adkins, T., Aguilar Faúndez, M. A. O., Arnold, K. S., Baccigalupi, C., Barron, D., Chapman, S., Cheung, K., Chinone, Y., Crowley, K. T., Elleflot, T., Errard, J., Fabbian, G., Feng, C., Fujino, T., Galitzki, N., Halverson, N. W., Hasegawa, M., Hazumi, M., Hirose, H., Howe, L., Ito, J., Jeong, O., Kaneko, D., Katayama, N., Keating, B., Kisner, T., Krachmalnicoff, N., Kusaka, A., Lee, A. T., Linder, E., Lonappan, A. I., Lowry, L. N., Matsuda, F., Matsumura, T., Minami, Y., Murata, M., Nishino, H., Nishinomiya, Y., Poletti, D., Reichardt, C. L., Ross, C., Segawa, Y., Siritanasak, P., Stompor, R., Suzuki, A., Tajima, O., Takakura, S., Takatori, S., Tanabe, D., Teply, G., Yamada, K., Zhou, Y. |
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| Přispěvatelé: | AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), APC - Cosmologie, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), POLARBEAR |
| Rok vydání: | 2022 |
| Předmět: |
Observational cosmology
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Cosmological parameters Cosmic inflation FOS: Physical sciences Molecular Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astronomy & Astrophysics Atomic Particle and Plasma Physics Cosmic microwave background radiation Settore FIS/05 - Astronomia e Astrofisica Space and Planetary Science Nuclear [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Instrumentation and Methods for Astrophysics Instrumentation and Methods for Astrophysics (astro-ph.IM) Astronomical and Space Sciences Astrophysics::Galaxy Astrophysics Physical Chemistry (incl. Structural) Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | The Astrophysical Journal Astrophys.J. Astrophys.J., 2022, 931 (2), pp.101. ⟨10.3847/1538-4357/ac6809⟩ The Astrophysical Journal, vol 931, iss 2 |
| ISSN: | 0004-637X |
| DOI: | 10.3847/1538-4357/ac6809 |
| Popis: | We report an improved measurement of the degree-scale cosmic microwave background $B$-mode angular-power spectrum over 670 square-degree sky area at 150 GHz with POLARBEAR. In the original analysis of the data, errors in the angle measurement of the continuously rotating half-wave plate, a polarization modulator, caused significant data loss. By introducing an angle-correction algorithm, the data volume is increased by a factor of 1.8. We report a new analysis using the larger data set. We find the measured $B$-mode spectrum is consistent with the $\Lambda$CDM model with Galactic dust foregrounds. We estimate the contamination of the foreground by cross-correlating our data and Planck 143, 217, and 353 GHz measurements, where its spectrum is modeled as a power law in angular scale and a modified blackbody in frequency. We place an upper limit on the tensor-to-scalar ratio $r$ < 0.33 at 95% confidence level after marginalizing over the foreground parameters. Comment: 16 pages, 9 figures, 8 tables, Published in ApJ |
| Databáze: | OpenAIRE |
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