Zobrazeno 1 - 10
of 68
pro vyhledávání: '"John W. Appel"'
Autor:
Rui Shi, John W. Appel, Charles L. Bennett, Ricardo Bustos, David T. Chuss, Sumit Dahal, Jullianna Denes Couto, Joseph R. Eimer, Thomas Essinger-Hileman, Kathleen Harrington, Jeffrey Iuliano, Yunyang Li, Tobias A. Marriage, Matthew A. Petroff, Karwan Rostem, Zeya Song, Deniz A. N. Valle, Duncan J. Watts, Janet L. Weiland, Edward J. Wollack, Zhilei Xu
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 41 (2024)
Improved polarization measurements at frequencies below 70 GHz with degree-level angular resolution are crucial for advancing our understanding of the Galactic synchrotron radiation and the potential polarized anomalous microwave emission and ultimat
Externí odkaz:
https://doaj.org/article/d3cb1977f73b49dcbf6b27c8cb4c1de0
Autor:
Rahul Datta, Michael K. Brewer, Jullianna Denes Couto, Joseph Eimer, Yunyang Li, Zhilei Xu, Aamir Ali, John W. Appel, Charles L. Bennett, Ricardo Bustos, David T. Chuss, Joseph Cleary, Sumit Dahal, Francisco Raul Javier Espinoza Inostroza, Thomas Essinger-Hileman, Pedro Fluxá, Kathleen Harrington, Kyle Helson, Jeffrey Iuliano, John Karakla, Tobias A. Marriage, Sasha Novack, Carolina Núñez, Ivan L. Padilla, Lucas Parker, Matthew A. Petroff, Rodrigo Reeves, Karwan Rostem, Rui Shi, Deniz A. N. Valle, Duncan J. Watts, Janet L. Weiland, Edward J. Wollack, Lingzhen Zeng
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 273, Iss 2, p 26 (2024)
The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over ∼75% of the sky from the Atacama Desert, Chile, at frequency bands centered near 40, 90, 150, and 220 GHz. CLASS measur
Externí odkaz:
https://doaj.org/article/6ff41d98986b4abd95adbda36f6edb7c
Autor:
Joseph R. Eimer, Yunyang Li, Michael K. Brewer, Rui Shi, Aamir Ali, John W. Appel, Charles L. Bennett, Sarah Marie Bruno, Ricardo Bustos, David T. Chuss, Joseph Cleary, Sumit Dahal, Rahul Datta, Jullianna Denes Couto, Kevin L. Denis, Rolando Dünner, Thomas Essinger-Hileman, Pedro Fluxá, Johannes Hubmayer, Kathleen Harrington, Jeffrey Iuliano, John Karakla, Tobias A. Marriage, Carolina Núñez, Lucas Parker, Matthew A. Petroff, Rodrigo A. Reeves, Karwan Rostem, Deniz A. N. Valle, Duncan J. Watts, Janet L. Weiland, Edward J. Wollack, Zhilei Xu, Lingzhen Zeng
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 92 (2024)
Measurement of the largest angular scale ( ℓ < 30) features of the cosmic microwave background (CMB) polarization is a powerful way to constrain the optical depth to reionization and search for the signature of inflation through the detection of pr
Externí odkaz:
https://doaj.org/article/4857ebe3c0504e12aa497e8a6a01a5ff
Autor:
Yunyang Li, John W. Appel, Charles L. Bennett, Ricardo Bustos, David T. Chuss, Joseph Cleary, Jullianna Denes Couto, Sumit Dahal, Rahul Datta, Rolando Dünner, Joseph R. Eimer, Thomas Essinger-Hileman, Kathleen Harrington, Jeffrey Iuliano, Tobias A. Marriage, Matthew A. Petroff, Rodrigo A. Reeves, Karwan Rostem, Rui Shi, Deniz A. N. Valle, Duncan J. Watts, Oliver F. Wolff, Edward J. Wollack, Zhilei Xu, CLASS Collaboration
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 154 (2023)
The dynamic atmosphere imposes challenges to ground-based cosmic microwave background observation, especially for measurements on large angular scales. The hydrometeors in the atmosphere, mostly in the form of clouds, scatter the ambient thermal radi
Externí odkaz:
https://doaj.org/article/8c96a28aa0a344bf897674e4df59c0f4
Autor:
Yunyang Li, Joseph R. Eimer, Keisuke Osumi, John W. Appel, Michael K. Brewer, Aamir Ali, Charles L. Bennett, Sarah Marie Bruno, Ricardo Bustos, David T. Chuss, Joseph Cleary, Jullianna Denes Couto, Sumit Dahal, Rahul Datta, Kevin L. Denis, Rolando Dünner, Francisco Espinoza, Thomas Essinger-Hileman, Pedro Fluxá Rojas, Kathleen Harrington, Jeffrey Iuliano, John Karakla, Tobias A. Marriage, Nathan J. Miller, Sasha Novack, Carolina Núñez, Matthew A. Petroff, Rodrigo A. Reeves, Karwan Rostem, Rui Shi, Deniz A. N. Valle, Duncan J. Watts, Janet L. Weiland, Edward J. Wollack, Zhilei Xu, Lingzhen Zeng, CLASS Collaboration
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 77 (2023)
The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background over 75% of the sky from the Atacama Desert, Chile, at frequency bands centered near 40, 90, 150, and 220 GHz. This paper describes
Externí odkaz:
https://doaj.org/article/e8b667c09ce4437995a91dea74c45620
Autor:
Sumit Dahal, Michael K. Brewer, Alex B. Akins, John W. Appel, Charles L. Bennett, Ricardo Bustos, Joseph Cleary, Jullianna D. Couto, Rahul Datta, Joseph Eimer, Thomas Essinger-Hileman, Jeffrey Iuliano, Yunyang Li, Tobias A. Marriage, Carolina Núñez, Matthew A. Petroff, Rodrigo Reeves, Karwan Rostem, Rui Shi, Deniz A. N. Valle, Duncan J. Watts, Janet L. Weiland, Edward J. Wollack, Zhilei Xu
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 8, p 154 (2023)
We report on the disk-averaged absolute brightness temperatures of Venus measured at four microwave frequency bands with the Cosmology Large Angular Scale Surveyor. We measure temperatures of 432.3 ± 2.8, 355.6 ± 1.3, 317.9 ± 1.7, and 294.7 ± 1.9
Externí odkaz:
https://doaj.org/article/15234ea799c04b989cd3899b90208003
Autor:
Rui Shi, Tobias A. Marriage, John W. Appel, Charles L. Bennett, David T. Chuss, Joseph Cleary, Joseph R. Eimer, Sumit Dahal, Rahul Datta, Francisco Espinoza, Yunyang Li, Nathan J. Miller, Carolina Núñez, Ivan L. Padilla, Matthew A. Petroff, Deniz A. N. Valle, Edward J. Wollack, Zhilei Xu
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 1, p 79 (2023)
In this paper, we explore the power of the cosmic microwave background (CMB) polarization ( E -mode) data to corroborate four potential anomalies in CMB temperature data: the lack of large angular-scale correlations, the alignment of the quadrupole a
Externí odkaz:
https://doaj.org/article/5032b45274184c5ca40fc92918681628
Autor:
Carolina Núñez, John W. Appel, Michael K. Brewer, Sarah Marie Bruno, Rahul Datta, Charles L. Bennett, Ricardo Bustos, David T. Chuss, Sumit Dahal, Kevin L. Denis, Joseph Eimer, Thomas Essinger-Hileman, Kyle Helson, Tobias Marriage, Carolina Morales Pérez, Ivan L. Padilla, Matthew A. Petroff, Karwan Rostem, Duncan J. Watts, Edward J. Wollack, Zhilei Xu
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-4
The Cosmology Large Angular Scale Surveyor (CLASS) is a polarization-sensitive telescope array located at an altitude of 5,200 m in the Chilean Atacama Desert and designed to measure the polarized Cosmic Microwave Background (CMB) over large angular
Autor:
Carolina Nunez, John W. Appel, Sarah Marie Bruno, Rahul Datta, Aamir Ali, Charles L. Bennett, Sumit Dahal, Jullianna Denes Couto, Kevin Denis, Joseph Eimer, Francisco Espinoza, Tom Essinger-Hileman, Kyle Helson, Jeffrey Iuliano, Tobias Marriage, Carolina Morales Peréz, Deniz Augusto Nunes Valle, Matthew Petroff, Karwan Rostem, Rui Shi, Duncan J. Watts, Edward J. Wollack, Zhilei Xu
Publikováno v:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI.
The Cosmology Large Angular Scale Surveyor (CLASS) is a polarization-sensitive telescope array located at an altitude of 5,200 m in the Chilean Atacama Desert. CLASS is designed to measure "E-mode" (even parity) and "B-mode" (odd parity) polarization
Autor:
Joseph R. Eimer, Michael K. Brewer, David T. Chuss, John Karakla, Rui Shi, John W. Appel, Charles L. Bennett, Joseph Cleary, Sumit Dahal, Rahul Datta, Thomas Essinger-Hileman, Tobias A. Marriage, Carolina Nunez, Matthew A. Petroff, Duncan J. Watts, Edward J. Wollack, Zhilei Xu
Publikováno v:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI.
Polarization modulation is a powerful technique to increase the stability of measurements by enabling the distinction of a polarized signal from dominant slow system drifts and unpolarized foregrounds. Furthermore, when placed as close to the sky as