دورية أكاديمية
Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey
| العنوان: | Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey |
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| المؤلفون: | 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. |
| المساهمون: | 安達, 俊介, 田島, 治 |
| بيانات النشر: | American Astronomical Society |
| سنة النشر: | 2022 |
| المجموعة: | Kyoto University Research Information Repository (KURENAI) / 京都大学学術情報リポジトリ |
| مصطلحات موضوعية: | Cosmic microwave background radiation, Observational cosmology, Cosmological parameters, Cosmic inflation |
| الوصف: | We report an improved measurement of the degree-scale cosmic microwave background B-mode angular-power spectrum over 670 deg² 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 ΛCDM 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. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0004-637X 1538-4357 |
| العلاقة: | http://hdl.handle.net/2433/282135Test; The Astrophysical Journal; 931; 101 |
| الإتاحة: | http://hdl.handle.net/2433/282135Test |
| حقوق: | © 2022. The Author(s). Published by the American Astronomical Society. ; Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. ; http://creativecommons.org/licenses/by/4.0Test/ |
| رقم الانضمام: | edsbas.46F46184 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 0004637X 15384357 |
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