Direct Optimal Mapping Image Power Spectrum and its Window Functions
The key to detecting neutral hydrogen during the epoch of reionization (EoR) is to separate the cosmological signal from the dominating foreground radiation. We developed direct optimal mapping (DOM) to map interferometric visibilities; it contains only linear operations, with full knowledge of poin...
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| creator | Xu, Zhilei Kim, Honggeun Hewitt, Jacqueline N Chen, Kai-Feng Kern, Nicholas S Rath, Eleanor Byrne, Ruby Gorce, Adélie Pascua, Robert Martinot, Zachary E Dillon, Joshua S Hazelton, Bryna J Liu, Adrian Morales, Miguel F Abdurashidova, Zara Adams, Tyrone Aguirre, James E Alexander, Paul Ali, Zaki S Baartman, Rushelle Balfour, Yanga Beardsley, Adam P Bernardi, Gianni Billings, Tashalee S Bowman, Judd D Bradley, Richard F Bull, Philip Burba, Jacob Carey, Steven Carilli, Chris L Cheng, Carina DeBoer, David R Acedo, Eloy de Lera Dexter, Matt Eksteen, Nico Ely, John Ewall-Wice, Aaron Fagnoni, Nicolas Fritz, Randall Furlanetto, Steven R Gale-Sides, Kingsley Glendenning, Brian Gorthi, Deepthi Greig, Bradley Grobbelaar, Jasper Halday, Ziyaad Hickish, Jack Jacobs, Daniel C Julius, Austin Kariseb, MacCalvin Kerrigan, Joshua Kittiwisit, Piyanat Kohn, Saul A Kolopanis, Matthew Lanman, Adam La Plante, Paul Loots, Anita MacMahon, David Harold Edward Malan, Lourence Malgas, Cresshim Malgas, Keith Marero, Bradley Mesinger, Andrei Molewa, Mathakane Mosiane, Tshegofalang Murray, Steven G Neben, Abraham R Nikolic, Bojan Nuwegeld, Hans Parsons, Aaron R Patra, Nipanjana Pieterse, Samantha Razavi-Ghods, Nima Robnett, James Rosie, Kathryn Sims, Peter Smith, Craig Swarts, Hilton Thyagarajan, Nithyanandan van Wyngaarden, Pieter Williams, Peter K. G Zheng, Haoxuan |
| description | The key to detecting neutral hydrogen during the epoch of reionization (EoR)
is to separate the cosmological signal from the dominating foreground
radiation. We developed direct optimal mapping (DOM) to map interferometric
visibilities; it contains only linear operations, with full knowledge of point
spread functions from visibilities to images. Here, we demonstrate a fast
Fourier transform-based image power spectrum and its window functions computed
from the DOM images. We use noiseless simulation, based on the Hydrogen Epoch
of Reionization Array Phase I configuration, to study the image power spectrum
properties. The window functions show $ |
| doi_str_mv | 10.48550/arxiv.2311.10711 |
| format | Article |
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is to separate the cosmological signal from the dominating foreground
radiation. We developed direct optimal mapping (DOM) to map interferometric
visibilities; it contains only linear operations, with full knowledge of point
spread functions from visibilities to images. Here, we demonstrate a fast
Fourier transform-based image power spectrum and its window functions computed
from the DOM images. We use noiseless simulation, based on the Hydrogen Epoch
of Reionization Array Phase I configuration, to study the image power spectrum
properties. The window functions show $<10^{-11}$ of the integrated power leaks
from the foreground-dominated region into the EoR window; the 2D and 1D power
spectra also verify the separation between the foregrounds and the EoR.</description><identifier>DOI: 10.48550/arxiv.2311.10711</identifier><language>eng</language><subject>Physics - Cosmology and Nongalactic Astrophysics ; Physics - Instrumentation and Methods for Astrophysics</subject><creationdate>2023-11</creationdate><rights>http://creativecommons.org/licenses/by/4.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,881</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2311.10711$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2311.10711$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Xu, Zhilei</creatorcontrib><creatorcontrib>Kim, Honggeun</creatorcontrib><creatorcontrib>Hewitt, Jacqueline N</creatorcontrib><creatorcontrib>Chen, Kai-Feng</creatorcontrib><creatorcontrib>Kern, Nicholas S</creatorcontrib><creatorcontrib>Rath, Eleanor</creatorcontrib><creatorcontrib>Byrne, Ruby</creatorcontrib><creatorcontrib>Gorce, Adélie</creatorcontrib><creatorcontrib>Pascua, Robert</creatorcontrib><creatorcontrib>Martinot, Zachary E</creatorcontrib><creatorcontrib>Dillon, Joshua S</creatorcontrib><creatorcontrib>Hazelton, Bryna J</creatorcontrib><creatorcontrib>Liu, Adrian</creatorcontrib><creatorcontrib>Morales, Miguel F</creatorcontrib><creatorcontrib>Abdurashidova, Zara</creatorcontrib><creatorcontrib>Adams, Tyrone</creatorcontrib><creatorcontrib>Aguirre, James E</creatorcontrib><creatorcontrib>Alexander, Paul</creatorcontrib><creatorcontrib>Ali, Zaki S</creatorcontrib><creatorcontrib>Baartman, Rushelle</creatorcontrib><creatorcontrib>Balfour, Yanga</creatorcontrib><creatorcontrib>Beardsley, Adam P</creatorcontrib><creatorcontrib>Bernardi, Gianni</creatorcontrib><creatorcontrib>Billings, Tashalee S</creatorcontrib><creatorcontrib>Bowman, Judd D</creatorcontrib><creatorcontrib>Bradley, Richard F</creatorcontrib><creatorcontrib>Bull, Philip</creatorcontrib><creatorcontrib>Burba, Jacob</creatorcontrib><creatorcontrib>Carey, Steven</creatorcontrib><creatorcontrib>Carilli, Chris L</creatorcontrib><creatorcontrib>Cheng, Carina</creatorcontrib><creatorcontrib>DeBoer, David R</creatorcontrib><creatorcontrib>Acedo, Eloy de Lera</creatorcontrib><creatorcontrib>Dexter, Matt</creatorcontrib><creatorcontrib>Eksteen, Nico</creatorcontrib><creatorcontrib>Ely, John</creatorcontrib><creatorcontrib>Ewall-Wice, Aaron</creatorcontrib><creatorcontrib>Fagnoni, Nicolas</creatorcontrib><creatorcontrib>Fritz, Randall</creatorcontrib><creatorcontrib>Furlanetto, Steven R</creatorcontrib><creatorcontrib>Gale-Sides, Kingsley</creatorcontrib><creatorcontrib>Glendenning, Brian</creatorcontrib><creatorcontrib>Gorthi, Deepthi</creatorcontrib><creatorcontrib>Greig, Bradley</creatorcontrib><creatorcontrib>Grobbelaar, Jasper</creatorcontrib><creatorcontrib>Halday, Ziyaad</creatorcontrib><creatorcontrib>Hickish, Jack</creatorcontrib><creatorcontrib>Jacobs, Daniel C</creatorcontrib><creatorcontrib>Julius, Austin</creatorcontrib><creatorcontrib>Kariseb, MacCalvin</creatorcontrib><creatorcontrib>Kerrigan, Joshua</creatorcontrib><creatorcontrib>Kittiwisit, Piyanat</creatorcontrib><creatorcontrib>Kohn, Saul A</creatorcontrib><creatorcontrib>Kolopanis, Matthew</creatorcontrib><creatorcontrib>Lanman, Adam</creatorcontrib><creatorcontrib>La Plante, Paul</creatorcontrib><creatorcontrib>Loots, Anita</creatorcontrib><creatorcontrib>MacMahon, David Harold Edward</creatorcontrib><creatorcontrib>Malan, Lourence</creatorcontrib><creatorcontrib>Malgas, Cresshim</creatorcontrib><creatorcontrib>Malgas, Keith</creatorcontrib><creatorcontrib>Marero, Bradley</creatorcontrib><creatorcontrib>Mesinger, Andrei</creatorcontrib><creatorcontrib>Molewa, Mathakane</creatorcontrib><creatorcontrib>Mosiane, Tshegofalang</creatorcontrib><creatorcontrib>Murray, Steven G</creatorcontrib><creatorcontrib>Neben, Abraham R</creatorcontrib><creatorcontrib>Nikolic, Bojan</creatorcontrib><creatorcontrib>Nuwegeld, Hans</creatorcontrib><creatorcontrib>Parsons, Aaron R</creatorcontrib><creatorcontrib>Patra, Nipanjana</creatorcontrib><creatorcontrib>Pieterse, Samantha</creatorcontrib><creatorcontrib>Razavi-Ghods, Nima</creatorcontrib><creatorcontrib>Robnett, James</creatorcontrib><creatorcontrib>Rosie, Kathryn</creatorcontrib><creatorcontrib>Sims, Peter</creatorcontrib><creatorcontrib>Smith, Craig</creatorcontrib><creatorcontrib>Swarts, Hilton</creatorcontrib><creatorcontrib>Thyagarajan, Nithyanandan</creatorcontrib><creatorcontrib>van Wyngaarden, Pieter</creatorcontrib><creatorcontrib>Williams, Peter K. G</creatorcontrib><creatorcontrib>Zheng, Haoxuan</creatorcontrib><title>Direct Optimal Mapping Image Power Spectrum and its Window Functions</title><description>The key to detecting neutral hydrogen during the epoch of reionization (EoR)
is to separate the cosmological signal from the dominating foreground
radiation. We developed direct optimal mapping (DOM) to map interferometric
visibilities; it contains only linear operations, with full knowledge of point
spread functions from visibilities to images. Here, we demonstrate a fast
Fourier transform-based image power spectrum and its window functions computed
from the DOM images. We use noiseless simulation, based on the Hydrogen Epoch
of Reionization Array Phase I configuration, to study the image power spectrum
properties. The window functions show $<10^{-11}$ of the integrated power leaks
from the foreground-dominated region into the EoR window; the 2D and 1D power
spectra also verify the separation between the foregrounds and the EoR.</description><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotz8FOwzAQBFBfOKDCB3BifyDBjl0nPqKWQqWiIlGJY7RrO5WlxrGclMLfUwqnuYxG8xi7E7xUzXzOHzB_hc-ykkKUgtdCXLPlMmRvJ9imKfR4gFdMKcQ9rHvce3gbTj7Dezo38rEHjA7CNMJHiG44weoY7RSGON6wqw4Po7_9zxnbrZ52i5dis31eLx43BepaFKbWxnHNkchxaSzySqK2BkVDyFFqIuqE1so4pVTdqcY2lSLSnVfSEZczdv83e2G0KZ8f5-_2l9NeOPIHGG9FDw</recordid><startdate>20231117</startdate><enddate>20231117</enddate><creator>Xu, Zhilei</creator><creator>Kim, Honggeun</creator><creator>Hewitt, Jacqueline N</creator><creator>Chen, Kai-Feng</creator><creator>Kern, Nicholas S</creator><creator>Rath, Eleanor</creator><creator>Byrne, Ruby</creator><creator>Gorce, Adélie</creator><creator>Pascua, Robert</creator><creator>Martinot, Zachary E</creator><creator>Dillon, Joshua S</creator><creator>Hazelton, Bryna J</creator><creator>Liu, Adrian</creator><creator>Morales, Miguel F</creator><creator>Abdurashidova, Zara</creator><creator>Adams, Tyrone</creator><creator>Aguirre, James E</creator><creator>Alexander, Paul</creator><creator>Ali, Zaki S</creator><creator>Baartman, Rushelle</creator><creator>Balfour, Yanga</creator><creator>Beardsley, Adam P</creator><creator>Bernardi, Gianni</creator><creator>Billings, Tashalee S</creator><creator>Bowman, Judd D</creator><creator>Bradley, Richard F</creator><creator>Bull, Philip</creator><creator>Burba, Jacob</creator><creator>Carey, Steven</creator><creator>Carilli, Chris L</creator><creator>Cheng, Carina</creator><creator>DeBoer, David R</creator><creator>Acedo, Eloy de Lera</creator><creator>Dexter, Matt</creator><creator>Eksteen, Nico</creator><creator>Ely, John</creator><creator>Ewall-Wice, Aaron</creator><creator>Fagnoni, Nicolas</creator><creator>Fritz, Randall</creator><creator>Furlanetto, Steven R</creator><creator>Gale-Sides, Kingsley</creator><creator>Glendenning, Brian</creator><creator>Gorthi, Deepthi</creator><creator>Greig, Bradley</creator><creator>Grobbelaar, Jasper</creator><creator>Halday, Ziyaad</creator><creator>Hickish, Jack</creator><creator>Jacobs, Daniel C</creator><creator>Julius, Austin</creator><creator>Kariseb, MacCalvin</creator><creator>Kerrigan, Joshua</creator><creator>Kittiwisit, Piyanat</creator><creator>Kohn, Saul A</creator><creator>Kolopanis, Matthew</creator><creator>Lanman, Adam</creator><creator>La Plante, Paul</creator><creator>Loots, Anita</creator><creator>MacMahon, David Harold Edward</creator><creator>Malan, Lourence</creator><creator>Malgas, Cresshim</creator><creator>Malgas, Keith</creator><creator>Marero, Bradley</creator><creator>Mesinger, Andrei</creator><creator>Molewa, Mathakane</creator><creator>Mosiane, Tshegofalang</creator><creator>Murray, Steven G</creator><creator>Neben, Abraham R</creator><creator>Nikolic, Bojan</creator><creator>Nuwegeld, Hans</creator><creator>Parsons, Aaron R</creator><creator>Patra, Nipanjana</creator><creator>Pieterse, Samantha</creator><creator>Razavi-Ghods, Nima</creator><creator>Robnett, James</creator><creator>Rosie, Kathryn</creator><creator>Sims, Peter</creator><creator>Smith, Craig</creator><creator>Swarts, Hilton</creator><creator>Thyagarajan, Nithyanandan</creator><creator>van Wyngaarden, Pieter</creator><creator>Williams, Peter K. G</creator><creator>Zheng, Haoxuan</creator><scope>GOX</scope></search><sort><creationdate>20231117</creationdate><title>Direct Optimal Mapping Image Power Spectrum and its Window Functions</title><author>Xu, Zhilei ; Kim, Honggeun ; Hewitt, Jacqueline N ; Chen, Kai-Feng ; Kern, Nicholas S ; Rath, Eleanor ; Byrne, Ruby ; Gorce, Adélie ; Pascua, Robert ; Martinot, Zachary E ; Dillon, Joshua S ; Hazelton, Bryna J ; Liu, Adrian ; Morales, Miguel F ; Abdurashidova, Zara ; Adams, Tyrone ; Aguirre, James E ; Alexander, Paul ; Ali, Zaki S ; Baartman, Rushelle ; Balfour, Yanga ; Beardsley, Adam P ; Bernardi, Gianni ; Billings, Tashalee S ; Bowman, Judd D ; Bradley, Richard F ; Bull, Philip ; Burba, Jacob ; Carey, Steven ; Carilli, Chris L ; Cheng, Carina ; DeBoer, David R ; Acedo, Eloy de Lera ; Dexter, Matt ; Eksteen, Nico ; Ely, John ; Ewall-Wice, Aaron ; Fagnoni, Nicolas ; Fritz, Randall ; Furlanetto, Steven R ; Gale-Sides, Kingsley ; Glendenning, Brian ; Gorthi, Deepthi ; Greig, Bradley ; Grobbelaar, Jasper ; Halday, Ziyaad ; Hickish, Jack ; Jacobs, Daniel C ; Julius, Austin ; Kariseb, MacCalvin ; Kerrigan, Joshua ; Kittiwisit, Piyanat ; Kohn, Saul A ; Kolopanis, Matthew ; Lanman, Adam ; La Plante, Paul ; Loots, Anita ; MacMahon, David Harold Edward ; Malan, Lourence ; Malgas, Cresshim ; Malgas, Keith ; Marero, Bradley ; Mesinger, Andrei ; Molewa, Mathakane ; Mosiane, Tshegofalang ; Murray, Steven G ; Neben, Abraham R ; Nikolic, Bojan ; Nuwegeld, Hans ; Parsons, Aaron R ; Patra, Nipanjana ; Pieterse, Samantha ; Razavi-Ghods, Nima ; Robnett, James ; Rosie, Kathryn ; Sims, Peter ; Smith, Craig ; Swarts, Hilton ; Thyagarajan, Nithyanandan ; van Wyngaarden, Pieter ; Williams, Peter K. G ; Zheng, Haoxuan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a671-9769d060abbd039ca023a6c9a18ba0a36bbbf16649d4447f48c824bb6fe43db03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><topic>Physics - Instrumentation and Methods for Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Xu, Zhilei</creatorcontrib><creatorcontrib>Kim, Honggeun</creatorcontrib><creatorcontrib>Hewitt, Jacqueline N</creatorcontrib><creatorcontrib>Chen, Kai-Feng</creatorcontrib><creatorcontrib>Kern, Nicholas S</creatorcontrib><creatorcontrib>Rath, Eleanor</creatorcontrib><creatorcontrib>Byrne, Ruby</creatorcontrib><creatorcontrib>Gorce, Adélie</creatorcontrib><creatorcontrib>Pascua, Robert</creatorcontrib><creatorcontrib>Martinot, Zachary E</creatorcontrib><creatorcontrib>Dillon, Joshua S</creatorcontrib><creatorcontrib>Hazelton, Bryna J</creatorcontrib><creatorcontrib>Liu, Adrian</creatorcontrib><creatorcontrib>Morales, Miguel F</creatorcontrib><creatorcontrib>Abdurashidova, Zara</creatorcontrib><creatorcontrib>Adams, Tyrone</creatorcontrib><creatorcontrib>Aguirre, James E</creatorcontrib><creatorcontrib>Alexander, Paul</creatorcontrib><creatorcontrib>Ali, Zaki S</creatorcontrib><creatorcontrib>Baartman, Rushelle</creatorcontrib><creatorcontrib>Balfour, Yanga</creatorcontrib><creatorcontrib>Beardsley, Adam P</creatorcontrib><creatorcontrib>Bernardi, Gianni</creatorcontrib><creatorcontrib>Billings, Tashalee S</creatorcontrib><creatorcontrib>Bowman, Judd D</creatorcontrib><creatorcontrib>Bradley, Richard F</creatorcontrib><creatorcontrib>Bull, Philip</creatorcontrib><creatorcontrib>Burba, Jacob</creatorcontrib><creatorcontrib>Carey, Steven</creatorcontrib><creatorcontrib>Carilli, Chris L</creatorcontrib><creatorcontrib>Cheng, Carina</creatorcontrib><creatorcontrib>DeBoer, David R</creatorcontrib><creatorcontrib>Acedo, Eloy de Lera</creatorcontrib><creatorcontrib>Dexter, Matt</creatorcontrib><creatorcontrib>Eksteen, Nico</creatorcontrib><creatorcontrib>Ely, John</creatorcontrib><creatorcontrib>Ewall-Wice, Aaron</creatorcontrib><creatorcontrib>Fagnoni, Nicolas</creatorcontrib><creatorcontrib>Fritz, Randall</creatorcontrib><creatorcontrib>Furlanetto, Steven R</creatorcontrib><creatorcontrib>Gale-Sides, Kingsley</creatorcontrib><creatorcontrib>Glendenning, Brian</creatorcontrib><creatorcontrib>Gorthi, Deepthi</creatorcontrib><creatorcontrib>Greig, Bradley</creatorcontrib><creatorcontrib>Grobbelaar, Jasper</creatorcontrib><creatorcontrib>Halday, Ziyaad</creatorcontrib><creatorcontrib>Hickish, Jack</creatorcontrib><creatorcontrib>Jacobs, Daniel C</creatorcontrib><creatorcontrib>Julius, Austin</creatorcontrib><creatorcontrib>Kariseb, MacCalvin</creatorcontrib><creatorcontrib>Kerrigan, Joshua</creatorcontrib><creatorcontrib>Kittiwisit, Piyanat</creatorcontrib><creatorcontrib>Kohn, Saul A</creatorcontrib><creatorcontrib>Kolopanis, Matthew</creatorcontrib><creatorcontrib>Lanman, Adam</creatorcontrib><creatorcontrib>La Plante, Paul</creatorcontrib><creatorcontrib>Loots, Anita</creatorcontrib><creatorcontrib>MacMahon, David Harold Edward</creatorcontrib><creatorcontrib>Malan, Lourence</creatorcontrib><creatorcontrib>Malgas, Cresshim</creatorcontrib><creatorcontrib>Malgas, Keith</creatorcontrib><creatorcontrib>Marero, Bradley</creatorcontrib><creatorcontrib>Mesinger, Andrei</creatorcontrib><creatorcontrib>Molewa, Mathakane</creatorcontrib><creatorcontrib>Mosiane, Tshegofalang</creatorcontrib><creatorcontrib>Murray, Steven G</creatorcontrib><creatorcontrib>Neben, Abraham R</creatorcontrib><creatorcontrib>Nikolic, Bojan</creatorcontrib><creatorcontrib>Nuwegeld, Hans</creatorcontrib><creatorcontrib>Parsons, Aaron R</creatorcontrib><creatorcontrib>Patra, Nipanjana</creatorcontrib><creatorcontrib>Pieterse, Samantha</creatorcontrib><creatorcontrib>Razavi-Ghods, Nima</creatorcontrib><creatorcontrib>Robnett, James</creatorcontrib><creatorcontrib>Rosie, Kathryn</creatorcontrib><creatorcontrib>Sims, Peter</creatorcontrib><creatorcontrib>Smith, Craig</creatorcontrib><creatorcontrib>Swarts, Hilton</creatorcontrib><creatorcontrib>Thyagarajan, Nithyanandan</creatorcontrib><creatorcontrib>van Wyngaarden, Pieter</creatorcontrib><creatorcontrib>Williams, Peter K. G</creatorcontrib><creatorcontrib>Zheng, Haoxuan</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Xu, Zhilei</au><au>Kim, Honggeun</au><au>Hewitt, Jacqueline N</au><au>Chen, Kai-Feng</au><au>Kern, Nicholas S</au><au>Rath, Eleanor</au><au>Byrne, Ruby</au><au>Gorce, Adélie</au><au>Pascua, Robert</au><au>Martinot, Zachary E</au><au>Dillon, Joshua S</au><au>Hazelton, Bryna J</au><au>Liu, Adrian</au><au>Morales, Miguel F</au><au>Abdurashidova, Zara</au><au>Adams, Tyrone</au><au>Aguirre, James E</au><au>Alexander, Paul</au><au>Ali, Zaki S</au><au>Baartman, Rushelle</au><au>Balfour, Yanga</au><au>Beardsley, Adam P</au><au>Bernardi, Gianni</au><au>Billings, Tashalee S</au><au>Bowman, Judd D</au><au>Bradley, Richard F</au><au>Bull, Philip</au><au>Burba, Jacob</au><au>Carey, Steven</au><au>Carilli, Chris L</au><au>Cheng, Carina</au><au>DeBoer, David R</au><au>Acedo, Eloy de Lera</au><au>Dexter, Matt</au><au>Eksteen, Nico</au><au>Ely, John</au><au>Ewall-Wice, Aaron</au><au>Fagnoni, Nicolas</au><au>Fritz, Randall</au><au>Furlanetto, Steven R</au><au>Gale-Sides, Kingsley</au><au>Glendenning, Brian</au><au>Gorthi, Deepthi</au><au>Greig, Bradley</au><au>Grobbelaar, Jasper</au><au>Halday, Ziyaad</au><au>Hickish, Jack</au><au>Jacobs, Daniel C</au><au>Julius, Austin</au><au>Kariseb, MacCalvin</au><au>Kerrigan, Joshua</au><au>Kittiwisit, Piyanat</au><au>Kohn, Saul A</au><au>Kolopanis, Matthew</au><au>Lanman, Adam</au><au>La Plante, Paul</au><au>Loots, Anita</au><au>MacMahon, David Harold Edward</au><au>Malan, Lourence</au><au>Malgas, Cresshim</au><au>Malgas, Keith</au><au>Marero, Bradley</au><au>Mesinger, Andrei</au><au>Molewa, Mathakane</au><au>Mosiane, Tshegofalang</au><au>Murray, Steven G</au><au>Neben, Abraham R</au><au>Nikolic, Bojan</au><au>Nuwegeld, Hans</au><au>Parsons, Aaron R</au><au>Patra, Nipanjana</au><au>Pieterse, Samantha</au><au>Razavi-Ghods, Nima</au><au>Robnett, James</au><au>Rosie, Kathryn</au><au>Sims, Peter</au><au>Smith, Craig</au><au>Swarts, Hilton</au><au>Thyagarajan, Nithyanandan</au><au>van Wyngaarden, Pieter</au><au>Williams, Peter K. G</au><au>Zheng, Haoxuan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Direct Optimal Mapping Image Power Spectrum and its Window Functions</atitle><date>2023-11-17</date><risdate>2023</risdate><abstract>The key to detecting neutral hydrogen during the epoch of reionization (EoR)
is to separate the cosmological signal from the dominating foreground
radiation. We developed direct optimal mapping (DOM) to map interferometric
visibilities; it contains only linear operations, with full knowledge of point
spread functions from visibilities to images. Here, we demonstrate a fast
Fourier transform-based image power spectrum and its window functions computed
from the DOM images. We use noiseless simulation, based on the Hydrogen Epoch
of Reionization Array Phase I configuration, to study the image power spectrum
properties. The window functions show $<10^{-11}$ of the integrated power leaks
from the foreground-dominated region into the EoR window; the 2D and 1D power
spectra also verify the separation between the foregrounds and the EoR.</abstract><doi>10.48550/arxiv.2311.10711</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | DOI: 10.48550/arxiv.2311.10711 |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_arxiv_primary_2311_10711 |
| source | arXiv.org |
| subjects | Physics - Cosmology and Nongalactic Astrophysics Physics - Instrumentation and Methods for Astrophysics |
| title | Direct Optimal Mapping Image Power Spectrum and its Window Functions |
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