干旱区生态环境知识资源中心(Arid): Four-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: On-sky Receiver Performance at 40, 90, 150, and 220 GHz Frequency Bands

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DOI	10.3847/1538-4357/ac397c
	Four-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: On-sky Receiver Performance at 40, 90, 150, and 220 GHz Frequency Bands
	Dahal, Sumit; Appel, John W.; Datta, Rahul; Brewer, Michael K.; Ali, Aamir; Bennett, Charles L.; Bustos, Ricardo; Chan, Manwei; Chuss, David T.; Cleary, Joseph; Couto, Jullianna D.; Denis, Kevin L.; Dunner, Rolando; Eimer, Joseph; Espinoza, Francisco; Essinger-Hileman, Thomas; Golec, Joseph E.; Harrington, Kathleen; Helson, Kyle; Iuliano, Jeffrey; Karakla, John; Li, Yunyang; Marriage, Tobias A.; McMahon, Jeffrey J.; Miller, Nathan J.; Novack, Sasha; Nunez, Carolina; Osumi, Keisuke; Padilla, Ivan L.; Palma, Gonzalo A.; Parker, Lucas; Petroff, Matthew A.; Reeves, Rodrigo; Rhoades, Gary; Rostem, Karwan; Valle, Deniz A. N.; Watts, Duncan J.; Weiland, Janet L.; Wollack, Edward J.; Xu, Zhilei
通讯作者	Dahal, S (corresponding author)，NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA. ; Dahal, S (corresponding author)，Johns Hopkins Univ, Dept Phys & Astron, 3701 San Martin Dr, Baltimore, MI 21218 USA.
来源期刊	ASTROPHYSICAL JOURNAL
ISSN	0004-637X
EISSN	1538-4357
出版年	2022
卷号	926 期号:1
英文摘要	The Cosmology Large Angular Scale Surveyor (CLASS) observes the polarized cosmic microwave background (CMB) over the angular scales of 1 degrees less than or similar to theta <= 90 degrees with the aim of characterizing primordial gravitational waves and cosmic reionization. We report on the on-sky performance of the CLASS Q-band (40 GHz), W-band (90 GHz), and dichroic G-band (150/220 GHz) receivers that have been operational at the CLASS site in the Atacama desert since 2016 June, 2018 May, and 2019 September, respectively. We show that the noise-equivalent power measured by the detectors matches the expected noise model based on on-sky optical loading and lab-measured detector parameters. Using Moon, Venus, and Jupiter observations, we obtain power to antenna temperature calibrations and optical efficiencies for the telescopes. From the CMB survey data, we compute instantaneous array noise-equivalent-temperature sensitivities of 22, 19, 23, and 71 mu K-cmp root s for the 40, 90, 150, and 220 GHz frequency bands, respectively. These noise temperatures refer to white noise amplitudes, which contribute to sky maps at all angular scales. Future papers will assess additional noise sources impacting larger angular scales.
类型	Article
语种	英语
开放获取类型	Green Submitted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000753151700001
WOS关键词	B-MODE POLARIZATION ; CIRCULAR-POLARIZATION ; INFLATIONARY UNIVERSE ; MILLIMETER ; SUBMILLIMETER ; SPECTRUM ; FLATNESS ; HORIZON ; TIME
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376437
作者单位	[Dahal, Sumit; Denis, Kevin L.; Essinger-Hileman, Thomas; Helson, Kyle; Rostem, Karwan; Wollack, Edward J.] NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA; [Dahal, Sumit; Appel, John W.; Datta, Rahul; Brewer, Michael K.; Ali, Aamir; Bennett, Charles L.; Chan, Manwei; Cleary, Joseph; Couto, Jullianna D.; Eimer, Joseph; Essinger-Hileman, Thomas; Harrington, Kathleen; Iuliano, Jeffrey; Karakla, John; Li, Yunyang; Marriage, Tobias A.; Miller, Nathan J.; Novack, Sasha; Nunez, Carolina; Osumi, Keisuke; Padilla, Ivan L.; Parker, Lucas; Petroff, Matthew A.; Rhoades, Gary; Valle, Deniz A. N.; Watts, Duncan J.; Weiland, Janet L.; Xu, Zhilei] Johns Hopkins Univ, Dept Phys & Astron, 3701 San Martin Dr, Baltimore, MI 21218 USA; [Ali, Aamir] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA; [Bustos, Ricardo; Espinoza, Francisco] Univ Catolica Santisima Concepcion, Fac Ingn, Alonso de Ribera 2850, Concepcion, Chile; [Chuss, David T.] Villanova Univ, Dept Phys, 800 Lancaster Ave, Villano...
推荐引用方式 GB/T 7714	Dahal, Sumit,Appel, John W.,Datta, Rahul,et al. Four-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: On-sky Receiver Performance at 40, 90, 150, and 220 GHz Frequency Bands[J],2022,926(1).
APA	Dahal, Sumit.,Appel, John W..,Datta, Rahul.,Brewer, Michael K..,Ali, Aamir.,...&Xu, Zhilei.(2022).Four-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: On-sky Receiver Performance at 40, 90, 150, and 220 GHz Frequency Bands.ASTROPHYSICAL JOURNAL,926(1).
MLA	Dahal, Sumit,et al."Four-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: On-sky Receiver Performance at 40, 90, 150, and 220 GHz Frequency Bands".ASTROPHYSICAL JOURNAL 926.1(2022).