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A Simultaneous Dual-site Technosignature Search Using International LOFAR Stations

Johnson, Owen A. (author)
University of California,Trinity College Dublin, the University of Dublin,University College Dublin, National University Of Ireland
Gajjar, Vishal (author)
University of California,SETI Institute
Keane, E. F. (author)
National University of Ireland,Trinity College Dublin, the University of Dublin
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McKenna, David J. (author)
Dublin Institute for Advanced Studies,Trinity College Dublin, the University of Dublin
Giese, Charles (author)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Trinity College Dublin, the University of Dublin
McKeon, Ben (author)
National University of Ireland,University Of Limerick
Carozzi, Tobia, 1966 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Alcaria, Cloe (author)
Trinity College Dublin, the University of Dublin,Universite Paul Sabatier Toulouse III,Paul Sabatier University
Brennan, Aoife (author)
Trinity College Dublin, the University of Dublin,National University of Ireland,European Southern Observatory Santiago
Brzycki, Bryan (author)
University of California
Croft, S. (author)
University of California,SETI Institute
Drew, Jamie (author)
NASA Ames Research Center
Elkins, Richard (author)
University of California
Gallagher, P. T. (author)
Dublin Institute for Advanced Studies
Kelly, Ruth (author)
University College London (UCL)
Lebofsky, Matt (author)
University of California
MacMahon, D. (author)
University of California
McCauley, Joseph (author)
Trinity College Dublin, the University of Dublin
de Pater, Imke (author)
University of California
Raeside, Shauna Rose (author)
Trinity College Dublin, the University of Dublin,Dublin Institute for Advanced Studies,Dublin City University
Siemion, A. (author)
University of California,SETI Institute
Worden, S. Pete (author)
NASA Ames Research Center
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 (creator_code:org_t)
2023
2023
English.
In: Astronomical Journal. - 1538-3881 .- 0004-6256. ; 166:5
Related links:
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https://doi.org/10.3...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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 transmitted by other civilizations, motivating technosignature searches across the entire radio spectrum. In this endeavor, the low-frequency radio band has remained largely unexplored; with prior radio searches primarily above 1 GHz. In this survey at 110-190 MHz, observations of 1,631,198 targets from TESS and Gaia are reported. Observations took place simultaneously with two international stations (noninterferometric) of the Low Frequency Array in Ireland and Sweden. We can reject the presence of any Doppler drifting narrowband transmissions in the barycentric frame of reference, with equivalent isotropic radiated power of 1017 W, for 0.4 million (or 1.3 million) stellar systems at 110 (or 190) MHz. This work demonstrates the effectiveness of using multisite simultaneous observations for rejecting anthropogenic signals in the search for technosignatures.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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