Zobrazeno 1 - 10
of 639
pro vyhledávání: '"P Siemion"'
Autor:
Painter, Caleb, Croft, Steve, Lebofsky, Matthew, Andersson, Alex, Choza, Carmen, Gajjar, Vishal, Price, Danny, Siemion, Andrew P. V.
The Breakthrough Listen program is, to date, the most extensive search for technological life beyond Earth. As part of this goal, over the past nine years it has surveyed thousands of nearby stars, close to 100 nearby galaxies, and a variety of exoti
Externí odkaz:
http://arxiv.org/abs/2412.05786
The Atacama Millimeter/Submillimeter Array (ALMA) remains unparalleled in sensitivity at radio frequencies above 35 GHz. In this paper, we explore ALMA's potential for narrowband technosignature detection, considering factors such as the interferomet
Externí odkaz:
http://arxiv.org/abs/2411.19827
Autor:
Jacobson-Bell, Ben, Croft, Steve, Choza, Carmen, Andersson, Alex, Bautista, Daniel, Gajjar, Vishal, Lebofsky, Matthew, MacMahon, David H. E., Painter, Caleb, Siemion, Andrew P. V.
The search for radio technosignatures is an anomaly detection problem: candidate signals represent needles of interest in the proverbial haystack of radio-frequency interference (RFI). Current search frameworks find an enormity of false-positive sign
Externí odkaz:
http://arxiv.org/abs/2411.16556
Autor:
Heywood, Ian, Siemion, Andrew P. V., Czech, Daniel, Ertel, Steve, Drew, Jamie, Grattan, Kyran, Wagner, Kevin, Worden, S. Pete
Publikováno v:
Res. Notes AAS 8 255, 2024
We have conducted observations of the nearby (11.46 ly) star system Procyon, using MeerKAT's UHF (544-1087 MHz) receivers. We produce full-Stokes time and frequency integrated continuum images, as well as total intensity time series imaging at 8 s ca
Externí odkaz:
http://arxiv.org/abs/2410.15069
Autor:
Manunza, Lorenzo, Vendrame, Alice, Pizzuto, Luca, Mulas, Monica, Perez, Karen I., Gajjar, Vishal, Melis, Andrea, Pilia, Maura, Perrodin, Delphine, Aresu, Giambattista, Burgay, Marta, Cabras, Alessandro, Carboni, Giuseppe, Casu, Silvia, Coiana, Tiziana, Corongiu, Alessandro, Croft, Steve, Egron, Elise, Johnson, Owen A., Ladu, Adelaide, Lebofsky, Matt, Loi, Francesca, MacMahon, David, Molinari, Emilio, Murgia, Matteo, Pellizzoni, Alberto, Pisanu, Tonino, Poddighe, Antonio, Rea, Erika, Siemion, Andrew, Soletta, Paolo, Trudu, Matteo, Vacca, Valentina
The quest for radio signals from technologically-advanced extraterrestrial intelligence has traditionally concentrated on the vicinity of 1.4 GHz. In this paper, we extend the search to unprecedented territories, detailing our extensive observations
Externí odkaz:
http://arxiv.org/abs/2410.09288
Autor:
Bright, Joe S., Carotenuto, Francesco, Fender, Rob, Choza, Carmen, Mummery, Andrew, Jonker, Peter G., Smartt, Stephen J., DeBoer, David R., Farah, Wael, Matthews, James, Pollak, Alexander W., Rhodes, Lauren, Siemion, Andrew
Despite being operational for only a short time, the Einstein Probe mission has already significantly advanced the study of rapid variability in the soft X-ray sky. We report the discovery of luminous and variable radio emission from the Einstein Pro
Externí odkaz:
http://arxiv.org/abs/2409.19055
Autor:
Tusay, Nick, Sheikh, Sofia Z., Sneed, Evan L., Farah, Wael, Pollak, Alexander W., Cruz, Luigi F., Siemion, Andrew, DeBoer, David R., Wright, Jason T.
Publikováno v:
AJ,168, 283 (2024)
Planet-planet occultations (PPOs) occur when one exoplanet occults another exoplanet in the same system as seen from the Earth's vantage point. PPOs may provide a unique opportunity to observe radio "spillover" from extraterrestrial intelligences' (E
Externí odkaz:
http://arxiv.org/abs/2409.08313
Autor:
Rhodes, L., van der Horst, A. J., Bright, J. S., Leung, J. K., Anderson, G. E., Fender, R., Fernandez, J. F. Agüí, Bremer, M., Chandra, P., Dobie, D., Farah, W., Giarratana, S., Gourdji, K., Green, D. A., Lenc, E., Michałowski, M. J., Murphy, T., Nayana, A. J., Pollak, A. W., Rowlinson, A., Schussler, F., Siemion, A., Starling, R. L. C., Scott, P., Thöne, C. C., Titterington, D., Postigo, A. de Ugarte
We present radio observations of the long-duration gamma-ray burst (GRB) 221009A which has become known to the community as the Brightest Of All Time or the BOAT. Our observations span the first 475 days post-burst and three orders of magnitude in ob
Externí odkaz:
http://arxiv.org/abs/2408.16637
Project Hephaistos recently identified seven M-dwarfs as possible Dyson Spheres (DS) candidates. We have cross-matched three of these candidates (A, B \& G) with radio sources detected in various all-sky surveys. The radio sources are offset from the
Externí odkaz:
http://arxiv.org/abs/2405.14921
Autor:
Cabrales, Bárbara, Davenport, James R. A., Sheikh, Sofia Z., Croft, Steve, Siemion, Andrew P. V., Giles, Daniel, Cody, Ann Marie
The SETI Ellipsoid is a strategy for technosignature candidate selection which assumes that extraterrestrial civilizations who have observed a galactic-scale event -- such as supernova 1987A -- may use it as a Schelling point to broadcast synchronize
Externí odkaz:
http://arxiv.org/abs/2402.11037