Zobrazeno 1 - 10
of 242
pro vyhledávání: '"E Macmahon"'
Autor:
C. D. Tremblay, S. S. Varghese, J. Hickish, P. B. Demorest, C. Ng, A. P. V. Siemion, D. Czech, R. A. Donnachie, W. Farah, V. Gajjar, M. Lebofsky, D. H. E. MacMahon, T. Myburgh, M. Ruzindana, J. S. Bright, A. Erickson, K. Lacker
Publikováno v:
The Astronomical Journal, Vol 167, Iss 1, p 35 (2023)
The primary goal of the search for extraterrestrial intelligence is to gain an understanding of the prevalence of technologically advanced beings (organic or inorganic) in the Galaxy. One way to approach this is to look for technosignatures: remotely
Externí odkaz:
https://doaj.org/article/b3191100ad2141fcb20e678e4eb2336c
Autor:
Carmen Choza, Daniel Bautista, Steve Croft, Andrew P. V. Siemion, Bryan Brzycki, Krishnakumar Bhattaram, Daniel Czech, Imke de Pater, Vishal Gajjar, Howard Isaacson, Kevin Lacker, Brian Lacki, Matthew Lebofsky, David H. E. MacMahon, Danny Price, Sarah Schoultz, Sofia Sheikh, Savin Shynu Varghese, Lawrence Morgan, Jamie Drew, S. Pete Worden
Publikováno v:
The Astronomical Journal, Vol 167, Iss 1, p 10 (2023)
The Breakthrough Listen search for intelligent life is, to date, the most extensive technosignature search of nearby celestial objects. We present a radio technosignature search of the centers of 97 nearby galaxies, observed by Breakthrough Listen at
Externí odkaz:
https://doaj.org/article/ca58c164a4d44c769e73bb8d37b62d3c
Autor:
Owen A. Johnson, Vishal Gajjar, Evan F. Keane, David J. McKenna, Charles Giese, Ben McKeon, Tobia D. Carozzi, Cloe Alcaria, Aoife Brennan, Bryan Brzycki, Steve Croft, Jamie Drew, Richard Elkins, Peter T. Gallagher, Ruth Kelly, Matt Lebofsky, Dave H. E. MacMahon, Joseph McCauley, Imke de Pater, Shauna Rose Raeside, Andrew P. V. Siemion, S. Pete Worden
Publikováno v:
The Astronomical Journal, Vol 166, Iss 5, p 193 (2023)
The Search for Extraterrestrial Intelligence aims to find evidence of technosignatures, which can point toward the possible existence of technologically advanced extraterrestrial life. Radio signals similar to those engineered on Earth may be transmi
Externí odkaz:
https://doaj.org/article/dc8f66e93b52452e9e6f1d834b28fae1
Autor:
Akshay Suresh, Vishal Gajjar, Pranav Nagarajan, Sofia Z. Sheikh, Andrew P. V. Siemion, Matt Lebofsky, David H. E. MacMahon, Danny C. Price, Steve Croft
Publikováno v:
The Astronomical Journal, Vol 165, Iss 6, p 255 (2023)
Radio searches for extraterrestrial intelligence have mainly targeted the discovery of narrowband continuous-wave beacons and artificially dispersed broadband bursts. Periodic pulse trains, in comparison to the above technosignature morphologies, off
Externí odkaz:
https://doaj.org/article/6a567c4212814e6ab19792aade9deb50
Autor:
The HERA Collaboration: Zara Abdurashidova, Tyrone Adams, James E. Aguirre, Paul Alexander, Zaki S. Ali, Rushelle Baartman, Yanga Balfour, Rennan Barkana, Adam P. Beardsley, Gianni Bernardi, Tashalee S. Billings, Judd D. Bowman, Richard F. Bradley, Daniela Breitman, Philip Bull, Jacob Burba, Steve Carey, Chris L. Carilli, Carina Cheng, Samir Choudhuri, David R. DeBoer, Eloy de Lera Acedo, Matt Dexter, Joshua S. Dillon, John Ely, Aaron Ewall-Wice, Nicolas Fagnoni, Anastasia Fialkov, Randall Fritz, Steven R. Furlanetto, Kingsley Gale-Sides, Hugh Garsden, Brian Glendenning, Adélie Gorce, Deepthi Gorthi, Bradley Greig, Jasper Grobbelaar, Ziyaad Halday, Bryna J. Hazelton, Stefan Heimersheim, 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, David Lewis, Adrian Liu, Anita Loots, Yin-Zhe Ma, David H. E. MacMahon, Lourence Malan, Keith Malgas, Cresshim Malgas, Matthys Maree, Bradley Marero, Zachary E. Martinot, Lisa McBride, Andrei Mesinger, Jordan Mirocha, Mathakane Molewa, Miguel F. Morales, Tshegofalang Mosiane, Julian B. Muñoz, Steven G. Murray, Vighnesh Nagpal, Abraham R. Neben, Bojan Nikolic, Chuneeta D. Nunhokee, Hans Nuwegeld, Aaron R. Parsons, Robert Pascua, Nipanjana Patra, Samantha Pieterse, Yuxiang Qin, Nima Razavi-Ghods, James Robnett, Kathryn Rosie, Mario G. Santos, Peter Sims, Saurabh Singh, Craig Smith, Hilton Swarts, Jianrong Tan, Nithyanandan Thyagarajan, Michael J. Wilensky, Peter K. G. Williams, Pieter van Wyngaarden, Haoxuan Zheng
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 124 (2023)
We report the most sensitive upper limits to date on the 21 cm epoch of reionization power spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization Array (HERA). Using similar analysis techniques as in previously repor
Externí odkaz:
https://doaj.org/article/ccbac6f812eb4a529df00c97b35f91cd
Autor:
Akshay Suresh, James M. Cordes, Shami Chatterjee, Vishal Gajjar, Karen I. Perez, Andrew P. V. Siemion, Matt Lebofsky, David H. E. MacMahon, Cherry Ng
Publikováno v:
The Astrophysical Journal, 933, 2, pp. 1-12
The Astrophysical Journal, 933, 1-12
The Astrophysical Journal, 933, 1-12
The Galactic Center (GC), with its high density of massive stars, is a promising target for radio transient searches. In particular, the discovery and timing of a pulsar orbiting the central supermassive black hole (SMBH) of our Galaxy will enable st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb9a138d3d4fdf47b0d01c07ef895df1
https://hdl.handle.net/2066/252348
https://hdl.handle.net/2066/252348
Autor:
Peter Xiangyuan Ma, Cherry Ng, Leandro Rizk, Steve Croft, Andrew P. V. Siemion, Bryan Brzycki, Daniel Czech, Jamie Drew, Vishal Gajjar, John Hoang, Howard Isaacson, Matt Lebofsky, David H. E. MacMahon, Imke de Pater, Danny C. Price, Sofia Z. Sheikh, S. Pete Worden
Publikováno v:
Nature Astronomy.
The goal of the Search for Extraterrestrial Intelligence (SETI) is to quantify the prevalence of technological life beyond Earth via their "technosignatures". One theorized technosignature is narrowband Doppler drifting radio signals. The principal c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16038ec5589d53f677f1debb622d29e2
https://doi.org/10.1038/s41550-022-01872-z
https://doi.org/10.1038/s41550-022-01872-z
Autor:
Tamirat G Gogo, Yin-Zhe Ma, Piyanat Kittiwisit, Jonathan L Sievers, Aaron R Parsons, Jonathan C Pober, Daniel C Jacobs, Carina Cheng, Matthew Kolopanis, Adrian Liu, Saul A Kohn, James E Aguirre, Zaki S Ali, Gianni Bernardi, Richard F Bradley, David R DeBoer, Matthew R Dexter, Joshua S Dillon, Pat Klima, David H E MacMahon, David F Moore, Chuneeta D Nunhokee, William P Walbrugh, Andre Walker
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 510:1680-1696
Observation of redshifted 21-cm signal from the Epoch of Reionization (EoR) is challenging due to contamination from the bright foreground sources that exceed the signal by several orders of magnitude. The removal of this very high foreground relies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb90898ffddd148cc7036f68f29d9646
https://doi.org/10.1093/mnras/stab3516
https://doi.org/10.1093/mnras/stab3516
Akademický článek
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Autor:
Vishal Gajjar, Dominic LeDuc, Jiani Chen, Andrew P. V. Siemion, Sofia Z. Sheikh, Bryan Brzycki, Steve Croft, Daniel Czech, David DeBoer, Julia DeMarines, Jamie Drew, Howard Isaacson, Brian C. Lacki, Matt Lebofsky, David H. E. MacMahon, Cherry Ng, Imke de Pater, Karen I. Perez, Danny C. Price, Akshay Suresh, Claire Webb, S. Pete Worden
The search for extraterrestrial intelligence at radio frequencies has largely been focused on continuous-wave narrowband signals. We demonstrate that broadband pulsed beacons are energetically efficient compared to narrowband beacons over longer oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::737b1fbb3a5b531aacb0fc8a7df68854
http://arxiv.org/abs/2205.02964
http://arxiv.org/abs/2205.02964
