相关论文: The Hydrogen Epoch of Reionization Array Dish II: …

The Hydrogen Epoch of Reionization Array Dish I: Beam Pattern Measurements and Science Implications

The Hydrogen Epoch of Reionization Array (HERA) is a radio interferometer aiming to detect the power spectrum of 21 cm fluctuations from neutral hydrogen from the Epoch of Reionization (EOR). Drawing on lessons from the Murchison Widefield…

天体物理仪器与方法 · 物理学 2016-12-08 Abraham R. Neben , Richard F. Bradley , Jacqueline N. Hewitt , David R. DeBoer , Aaron R. Parsons , James E. Aguirre , Zaki S. Ali , Carina Cheng , Aaron Ewall-Wice , Nipanjana Patra , Nithyanandan Thyagarajan , Judd Bowman , Roger Dickenson , Joshua S. Dillon , Phillip Doolittle , Dennis Egan , Mike Hedrick , Daniel C. Jacobs , Saul A. Kohn , Patricia J. Klima , Kavilan Moodley , Benjamin R. B. Saliwanchik , Patrick Schaffner , John Shelton , H. A. Taylor , Rusty Taylor , Max Tegmark , Butch Wirt , Haoxuan Zheng

Effects of Antenna Beam Chromaticity on Redshifted 21~cm Power Spectrum and Implications for Hydrogen Epoch of Reionization Array

Unaccounted for systematics from foregrounds and instruments can severely limit the sensitivity of current experiments from detecting redshifted 21~cm signals from the Epoch of Reionization (EoR). Upcoming experiments are faced with a…

宇宙学与河外天体物理 · 物理学 2016-07-06 Nithyanandan Thyagarajan , Aaron Parsons , David DeBoer , Judd Bowman , Aaron Ewall-Wice , Abraham Neben , Nipanjana Patra

The Hydrogen Epoch of Reionization Array Dish III: Measuring Chromaticity of Prototype Element with Reflectometry

The experimental efforts to detect the redshifted 21 cm signal from the Epoch of Reionization (EoR) are limited predominantly by the chromatic instrumental systematic effect. The delay spectrum methodology for 21 cm power spectrum…

天体物理仪器与方法 · 物理学 2018-03-21 Nipanjana Patra , Aaron R. Parsons , David R. DeBoer , Nithyanandan Thyagarajan , Aaron Ewall-Wice , Gilbert Hsyu , Tsz Kuk Leung , Cherie K. Day , James E. Aguirre , Paul Alexander , Zaki S. Ali , Adam P. Beardsley , Judd D. Bowman , Richard F. Bradley , Chris L. Carilli , Carina Cheng , Eloy de Lera Acedo , Joshua S. Dillon , Gcobisa Fadana , Nicolas Fagnoni , Randall Fritz , Steve R. Furlanetto , Brian Glendenning , Bradley Greig , Jasper Grobbelaar , Bryna J. Hazelton , Jacqueline N. Hewitt , Daniel C. Jacobs , Austin Julius , MacCalvin Kariseb , Saul A. Kohn , Anna Lebedeva , Telalo Lekalake , Adrian Liu , Anita Loots , David MacMahon , Lourence Malan , Cresshim Malgas , Matthys Maree , Zachary Martinot , Nathan Mathison , Eunice Matsetela , Andrei Mesinger , Miguel F. Morales , Abraham R. Neben , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , Jon Ringuette , James Robnett , Kathryn Rosie , Raddwine Sell , Craig Smith , Angelo Syce , Max Tegmark , Peter K. G. Williams , Haoxuan Zheng

Understanding the HERA Phase I receiver system with simulations and its impact on the detectability of the EoR delay power spectrum

The detection of the Epoch of Reionization (EoR) delay power spectrum using a "foreground avoidance method" highly depends on the instrument chromaticity. The systematic effects induced by the radio-telescope spread the foreground signal in…

天体物理仪器与方法 · 物理学 2020-10-28 Nicolas Fagnoni , Eloy de Lera Acedo , David R. DeBoer , Zara Abdurashidova , James E. Aguirre , Paul Alexander , Zaki S. Ali , Yanga Balfour , Adam P. Beardsley , Gianni Bernardi , Tashalee S. Billings , Judd D. Bowman , Richard F. Bradley , Phil Bull , Jacob Burba , Chris L. Carilli , Carina Cheng , Matt Dexter , Joshua S. Dillon , Aaron Ewall-Wice , Randall Fritz , Steve R. Furlanetto , Kingsley Gale-Sides , Brian Glendenning , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Daniel C. Jacobs , Alec Josaitis , Austin Julius , Nicholas S. Kern , Joshua Kerrigan , Honggeun Kim , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Adam Lanman , Paul La Plante , Telalo Lekalake , Adrian Liu , David MacMahon , Lourence Malan , Cresshim Malgas , Matthys Maree , Zachary E. Martinot , Eunice Matsetela , Juan Mena Parra , Andrei Mesinger , Mathakane Molewa , Miguel F. Morales , Tshegofalang Mosiane , Abraham R. Neben , Bojan Nikolic , Aaron R. Parsons , Nipanjana Patra , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , James Robnett , Kathryn Rosie , Peter Sims , Craig Smith , Angelo Syce , Nithyanandan Thyagarajan , Peter K. G. Williams , Haoxuan Zheng

The Hydrogen Epoch of Reionization Array (HERA). Improvement of the antenna response with a matching network and scientific impacts

The Hydrogen Epoch of Reionization Array (HERA) is a new powerful radio-telescope, dedicated to the study of the early universe. Its main goal is to characterise the period of the universe where the first galaxies and stars started to form,…

天体物理仪器与方法 · 物理学 2016-06-29 Nicolas Fagnoni , Eloy de Lera Acedo

Hydrogen Epoch of Reionization Array (HERA)

The Hydrogen Epoch of Reionization Array (HERA) is a staged experiment to measure 21 cm emission from the primordial intergalactic medium (IGM) throughout cosmic reionization ($z=6-12$), and to explore earlier epochs of our Cosmic Dawn…

天体物理仪器与方法 · 物理学 2017-03-08 David R. DeBoer , Aaron R. Parsons , James E. Aguirre , Paul Alexander , Zaki S. Ali , Adam P. Beardsley , Gianni Bernardi , Judd D. Bowman , Richard F. Bradley , Chris L. Carilli , Carina Cheng , Eloy de Lera Acedo , Joshua S. Dillon , Aaron Ewall-Wice , Gcobisa Fadana , Nicolas Fagnoni , Randall Fritz , Steve R. Furlanetto , Brian Glendenning , Bradley Greig , Jasper Grobbelaar , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Daniel C. Jacobs , Austin Julius , MacCalvin Kariseb , Saul A. Kohn , Telalo Lekalake , Adrian Liu , Anita Loots , David MacMahon , Lourence Malan , Cresshim Malgas , Matthys Maree , Nathan Mathison , Eunice Matsetela , Andrei Mesinger , Miguel F. Morales , Abraham R. Neben , Nipanjana Patra , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , Jon Ringuette , James Robnett , Kathryn Rosie , Raddwine Sell , Craig Smith , Angelo Syce , Max Tegmark , Nithyanandan Thyagarajan , Peter K. G. Williams , Haoxuan Zheng

Mitigating Internal Instrument Coupling II: A Method Demonstration with the Hydrogen Epoch of Reionization Array

We present a study of internal reflection and cross coupling systematics in Phase I of the Hydrogen Epoch of Reionization Array (HERA). In a companion paper, we outlined the mathematical formalism for such systematics and presented…

天体物理仪器与方法 · 物理学 2020-01-15 Nicholas S. Kern , Aaron R. Parsons , Joshua S. Dillon , Adam E. Lanman , Adrian Liu , Philip Bull , Aaron Ewall-Wice , Zara Abdurashidova , James E. Aguirre , Paul Alexander , Zaki S. Ali , Yanga Balfour , Adam P. Beardsley , Gianni Bernardi , Judd D. Bowman , Richard F. Bradley , Jacob Burba , Chris L. Carilli , Carina Cheng , David R. DeBoer , Matt Dexter , Eloy de Lera Acedo , Nicolas Fagnoni , Randall Fritz , Steve R. Furlanetto , Brian Glendenning , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Daniel C. Jacobs , Austin Julius , Joshua Kerrigan , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Paul La Plante , Telalo Lekalake , David MacMahon , Lourence Malan , Cresshim Malgas , Matthys Maree , Zachary E. Martinot , Eunice Matsetela , Andrei Mesinger , Mathakane Molewa , Miguel F. Morales , Tshegofalang Mosiane , Steven G. Murray , Abraham R. Neben , Aaron R. Parsons , Nipanjana Patra , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , Jon Ringuette , James Robnett , Kathryn Rosie , Peter Sims , Craig Smith , Angelo Syce , Nithyanandan Thyagarajan , Peter K. G. Williams , Haoxuan Zheng

First Results from HERA Phase I: Upper Limits on the Epoch of Reionization 21 cm Power Spectrum

We report upper-limits on the Epoch of Reionization (EoR) 21 cm power spectrum at redshifts 7.9 and 10.4 with 18 nights of data ($\sim36$ hours of integration) from Phase I of the Hydrogen Epoch of Reionization Array (HERA). The Phase I…

宇宙学与河外天体物理 · 物理学 2022-03-02 The HERA Collaboration , Zara Abdurashidova , James E. Aguirre , Paul Alexander , Zaki S. Ali , Yanga Balfour , Adam P. Beardsley , Gianni Bernardi , Tashalee S. Billings , Judd D. Bowman , Richard F. Bradley , Philip Bull , Jacob Burba , Steve Carey , Chris L. Carilli , Carina Cheng , David R. DeBoer , Matt Dexter , Eloy de Lera Acedo , Taylor Dibblee-Barkman , Joshua S. Dillon , John Ely , Aaron Ewall-Wice , Nicolas Fagnoni , Randall Fritz , Steven R. Furlanetto , Kingsley Gale-Sides , Brian Glendenning , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Daniel C. Jacobs , Austin Julius , Nicholas S. Kern , Joshua Kerrigan , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Adam Lanman , Paul La Plante , Telalo Lekalake , David Lewis , Adrian Liu , David MacMahon , Lourence Malan , Cresshim Malgas , Matthys Maree , Zachary E. Martinot , Eunice Matsetela , Andrei Mesinger , Mathakane Molewa , Miguel F. Morales , Tshegofalang Mosiane , Steven G. Murray , Abraham R. Neben , Bojan Nikolic , Chuneeta D. Nunhokee , Aaron R. Parsons , Nipanjana Patra , Robert Pascua , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , Jon Ringuette , James Robnett , Kathryn Rosie , Peter Sims , Saurabh Singh , Craig Smith , Angelo Syce , Nithyanandan Thyagarajan , Peter K. G. Williams , Haoxuan Zheng

Search for the Epoch of Reionisation with HERA: Upper Limits on the Closure Phase Delay Power Spectrum

Radio interferometers aiming to measure the power spectrum of the redshifted 21 cm line during the Epoch of Reionisation (EoR) need to achieve an unprecedented dynamic range to separate the weak signal from overwhelming foreground…

宇宙学与河外天体物理 · 物理学 2023-07-12 Pascal M. Keller , Bojan Nikolic , Nithyanandan Thyagarajan , Chris L. Carilli , Gianni Bernardi , Ntsikelelo Charles , Landman Bester , Oleg M. Smirnov , Nicholas S. Kern , Joshua S. Dillon , Bryna J. Hazelton , Miguel F. Morales , Daniel C. Jacobs , Aaron R. Parsons , Zara Abdurashidova , Tyrone Adams , James E. Aguirre , Paul Alexander , Zaki S. Ali , Rushelle Baartman , Yanga Balfour , Adam P. Beardsley , Tashalee S. Billings , Judd D. Bowman , Richard F. Bradley , Philip Bull , Jacob Burba , Steven Carey , Carina Cheng , David R. DeBoer , Eloy de Lera Acedo , Matt Dexter , Nico Eksteen , John Ely , Aaron Ewall-Wice , Nicolas Fagnoni , Randall Fritz , Steven R. Furlanetto , Kingsley Gale-Sides , Brian Glendenning , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Jacqueline N. Hewitt , Jack Hickish , Austin Julius , MacCalvin Kariseb , Joshua Kerrigan , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Adam Lanman , Paul La Plante , Adrian Liu , Anita Loots , Yin-Zhe Ma , David Harold Edward MacMahon , Lourence Malan , Cresshim Malgas , Keith Malgas , Bradley Marero , Zachary E. Martinot , Andrei Mesinger , Mathakane Molewa , Tshegofalang Mosiane , Steven G. Murray , Abraham R. Neben , Hans Nuwegeld , Robert Pascua , Nipanjana Patra , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , James Robnett , Kathryn Rosie , Mario G. Santos , Peter Sims , Craig Smith , Hilton Swarts , Pieter Van Wyngaarden , Peter K. G. Williams , Haoxuan Zheng

Imaging and Modeling Data from the Hydrogen Epoch of Reionization Array

We analyze data from the Hydrogen Epoch of Reionization Array. This is the third in a series of papers on the closure phase delay-spectrum technique designed to detect the HI 21cm emission from cosmic reionization. We present the details of…

天体物理仪器与方法 · 物理学 2022-01-19 C. L. Carilli{1 , 2} , N. Thyagarajan{1} , J. Kent{2} , B. Nikolic{2} , K. Gale-Sides{2} , N. S. Kern{3} , G. Bernardi{4 , 5 , 6} , A. Mesinger{7} , S. Matika{5} , the HERA TEAM {1}{National Radio Astronomy Observatory , P. O. Box 0 , Socorro , NM 87801 , USA , ccarilli@nrao. edu , ORCID , : , 0000-0001-6647-3861} {2}{Astrophysics Group , Cavendish Laboratory , JJ Thomson Avenue , Cambridge CB3 0HE , UK} {3}{Department of Astronomy , University of California , Berkeley , CA} {4}{INAF-Istituto di Radioastronomia , via Gobetti 101 , 40129 , Bologna , Italy} {5}{Department of Physics , Electronics , Rhodes University , PO Box 94 , Grahamstown , 6140 , South Africa} {6}{The South African Radio Astronomy Observatory , 2 Fir Street , Black River Park , Observatory , 7925 , South Africa} {7}{Scuola Normale Superiore , 56126 Pisa , PI , Italy}

Fundamental uncertainty levels of 21cm power spectra from a delay analysis

Several experimental efforts are underway to measure the power spectrum of 21cm fluctuations from the Epoch of Reionization (EoR) using low-frequency radio interferometers. Experiments like the Hydrogen Epoch of Reionization Array (HERA)…

天体物理仪器与方法 · 物理学 2019-06-19 Adam E. Lanman , Jonathan C. Pober

The Impact of Beam Variations on Power Spectrum Estimation for 21-cm Cosmology I: Simulations of Foreground Contamination for HERA

Detecting cosmological signals from the Epoch of Reionization (EoR) requires high-precision calibration to isolate the cosmological signals from foreground emission. In radio interferometery, perturbed primary beams of antenna elements can…

天体物理仪器与方法 · 物理学 2023-01-04 Honggeun Kim , Bang D. Nhan , Jacqueline N. Hewitt , Nicholas S. Kern , Joshua S. Dillon , Eloy de Lera Acedo , Scott Dynes , Nivedita Mahesh , Nicolas Fagnoni , David R. DeBoer

Absolute Calibration Strategies for the Hydrogen Epoch of Reionization Array and Their Impact on the 21 cm Power Spectrum

We discuss absolute calibration strategies for Phase I of the Hydrogen Epoch of Reionization Array (HERA), which aims to measure the cosmological 21 cm signal from the Epoch of Reionization (EoR). HERA is a drift-scan array with a 10 degree…

天体物理仪器与方法 · 物理学 2020-02-26 Nicholas S. Kern , Joshua S. Dillon , Aaron R. Parsons , Christopher L. Carilli , Gianni Bernardi , Zara Abdurashidova , James E. Aguirre , Paul Alexander , Zaki S. Ali , Yanga Balfour , Adam P. Beardsley , Tashalee S. Billings , Judd D. Bowman , Richard F. Bradley , Philip Bull , Jacob Burba , Steven Carey , Carina Cheng , David R. DeBoer , Matt Dexter , Eloy de Lera Acedo , John Ely , Aaron Ewall-Wice , Nicolas Fagnoni , Randall Fritz , Steve R. Furlanetto , Kingsley Gale-Sides , Brian Glendenning , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Daniel C. Jacobs , Austin Julius , Joshua Kerrigan , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Adam Lanman , Paul La Plante , Telalo Lekalake , Adrian Liu , David MacMahon , Lourence Malan , Cresshim Malgas , Matthys Maree , Zachary E. Martinot , Eunice Matsetela , Andrei Mesinger , Mathakane Molewa , Miguel F. Morales , Tshegofalang Mosiane , Steven G. Murray , Abraham R. Neben , Bojan Nikolic , Chuneeta D. Nunhokee , Nipanjana Patra , Samantha Pieterse , Jonathan C. Pober , Nima Razavi-Ghods , Jon Ringuette , James Robnett , Kathryn Rosie , Peter Sims , Craig Smith , Angelo Syce , Nithyanandan Thyagarajan , Peter K. G. Williams , Haoxuan Zheng

Bayesian estimation of cross-coupling and reflection systematics in 21cm array visibility data

Observations with radio arrays that target the 21-cm signal originating from the early Universe suffer from a variety of systematic effects. An important class of these are reflections and spurious couplings between antennas. We apply a…

天体物理仪器与方法 · 物理学 2025-03-06 Geoff G. Murphy , Philip Bull , Mario G. Santos , Zara Abdurashidova , Tyrone Adams , James E. Aguirre , Paul Alexander , Zaki S. Ali , Rushelle Baartman , Yanga Balfour , Adam P. Beardsley , Gianni Bernardi , Tashalee Billings , Judd D. Bowman , Richard F. Bradley , Jacob Burba , Christopher Cain , Steven Carey , Chris L. Carilli , Carina Cheng , David R. DeBoer , Eloy de Lera Acedo , Matt Dexter , Joshua S. Dillon , Nico Eksteen , John Ely , Aaron Ewall-Wice , Nicolas Fagnoni , Randall Fritz , Steven R. Furlanetto , Kingsley Gale-Sides , Brian Glendenning , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Daniel C. Jacobs , Austin Julius , MacCalvin Kariseb , Nicholas S. Kern , Joshua Kerrigan , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Adam Lanman , Paul La Plante , Adrian Liu , Anita Loots , David Harold Edward MacMahon , Lourence Malan , Cresshim Malgas , Keith Malgas , Bradley Marero , Zachary E. Martinot , Andrei Mesinger , Mathakane Molewa , Miguel F. Morales , Tshegofalang Mosiane , Steven G. Murray , Abraham R. Neben , Bojan Nikolic , Hans Nuwegeld , Aaron R. Parsons , Nipanjana Patra , Samantha Pieterse , Nima Razavi-Ghods , James Robnett , Kathryn Rosie , Peter Sims , Jackson Sipple , Craig Smith , Hilton Swarts , Nithyanandan Thyagarajan , Pieter van Wyngaarden , Peter K. G. Williams , Haoxuan Zheng

Hydrogen Epoch of Reionization Array (HERA) Phase II Deployment and Commissioning

This paper presents the design and deployment of the Hydrogen Epoch of Reionization Array (HERA) phase II system. HERA is designed as a staged experiment targeting 21 cm emission measurements of the Epoch of Reionization. First results from…

天体物理仪器与方法 · 物理学 2024-04-25 Lindsay M. Berkhout , Daniel C. Jacobs , Zuhra Abdurashidova , Tyrone Adams , James E. Aguirre , Paul Alexander , Zaki S. Ali , Rushelle Baartman , Yanga Balfour , Adam P. Beardsley , Gianni Bernardi , Tashalee S. Billings , Judd D. Bowman , Richard F. Bradley , Philip Bull , Jacob Burba , Steven Carey , Chris L. Carilli , Kai-Feng Chen , Carina Cheng , Samir Choudhuri , David R. DeBoer , Eloy de Lera Acedo , Matt Dexter , Joshua S. Dillon , Scott Dynes , Nico Eksteen , John Ely , Aaron Ewall-Wice , Nicolas Fagnoni , Randall Fritz , Steven R. Furlanetto , Kingsley Gale-Sides , Hugh Garsden , Bharat Kumar Gehlot , Abhik Ghosh , Brian Glendenning , Adelie Gorce , Deepthi Gorthi , Bradley Greig , Jasper Grobbelaar , Ziyaad Halday , Bryna J. Hazelton , Jacqueline N. Hewitt , Jack Hickish , Tian Huang , Alec Josaitis , Austin Julius , MacCalvin Kariseb , Nicholas S. Kern , Joshua Kerrigan , Honggeun Kim , Piyanat Kittiwisit , Saul A. Kohn , Matthew Kolopanis , Adam Lanman , Paul La Plante , Adrian Liu , Anita Loots , Yin-Zhe Ma , David Harold Edward MacMahon , Lourence Malan , Cresshim Malgas , Keith Malgas , Bradley Marero , Zachary E. Martinot , Andrei Mesinger , Mathakane Molewa , Miguel F. Morales , Tshegofalang Mosiane , Steven G. Murray , Abraham R. Neben , Bojan Nikolic , Chuneeta Devi Nunhokee , Hans Nuwegeld , Aaron R. Parsons , Robert Pascua , Nipanjana Patra , Samantha Pieterse , Yuxiang Qin , Eleanor Rath , Nima Razavi-Ghods , Daniel Riley , James Robnett , Kathryn Rosie , Mario G. Santos , Peter Sims , Saurabh Singh , Dara Storer , Hilton Swarts , Jianrong Tan , Nithyanandan Thyagarajan , Pieter van Wyngaarden , Peter K. G. Williams , Haoxuan Zheng , Zhilei Xu

Redundant Array Configurations for 21 cm Cosmology

Realizing the potential of 21 cm tomography to statistically probe the intergalactic medium before and during the Epoch of Reionization requires large telescopes and precise control of systematics. Next-generation telescopes are now being…

天体物理仪器与方法 · 物理学 2016-08-17 Joshua S. Dillon , Aaron R. Parsons

Sensitivity of the Hydrogen Epoch of Reionization Array and its Build-out Stages to One-point Statistics from Redshifted 21 cm Observations

We present a baseline sensitivity analysis of the Hydrogen Epoch of Reionization Array (HERA) and its build-out stages to one-point statistics (variance, skewness, and kurtosis) of redshifted 21 cm intensity fluctuation from the Epoch of…

宇宙学与河外天体物理 · 物理学 2018-04-26 Piyanat Kittiwisit , Judd D. Bowman , Daniel C. Jacobs , Adam P. Beardsley , Nithyanandan Thyagarajan

Constraining High Redshift X-ray Sources with Next Generation 21 cm Power Spectrum Measurements

We use the Fisher matrix formalism and semi-numerical simulations to derive quantitative predictions of the constraints that power spectrum measurements on next-generation interferometers, such as the Hydrogen Epoch of Reionization Array…

宇宙学与河外天体物理 · 物理学 2016-04-26 Aaron Ewall-Wice , Jacqueline Hewitt , Andrei Mesinger , Joshua S. Dillon , Adrian Liu , Jonathan Pober

Estimating the Feasibility of 21cm-Ly$\alpha$ Synergies using the Hydrogen Epoch of Reionization Array

Cross-correlating 21cm and Ly$\alpha$ intensity maps of the Epoch of Reionization (EoR) promises to be a powerful tool for exploring the properties of the first galaxies. Next-generation intensity mapping experiments such as the Hydrogen…

宇宙学与河外天体物理 · 物理学 2022-03-02 Tyler A. Cox , Daniel C. Jacobs , Steven G. Murray

The Impact of Beam Variations on Power Spectrum Estimation for 21 cm Cosmology II: Mitigation of Foreground Systematics for HERA

One key challenge in detecting 21 cm cosmological signal at z > 6 is to separate the cosmological signal from foreground emission. This can be studied in a power spectrum space where the foreground is confined to low delay modes whereas the…

宇宙学与河外天体物理 · 物理学 2023-07-25 Honggeun Kim , Nicholas S. Kern , Jacqueline N. Hewitt , Bang D. Nhan , Joshua S. Dillon , Eloy de Lera Acedo , Scott B. C. Dynes , Nivedita Mahesh , Nicolas Fagnoni , David R. DeBoer