Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Steve Croft"'
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 118 (2024)
We present a novel method for anomaly detection in solar system object data in preparation for the Legacy Survey of Space and Time. We train a deep autoencoder for anomaly detection and use the learned latent space to search for other interesting obj
Externí odkaz:
https://doaj.org/article/f1403ae2dbc54cbf977331d03b0ad570
Autor:
Bárbara Cabrales, James R. A. Davenport, Sofia Sheikh, Steve Croft, Andrew P. V. Siemion, Daniel Giles, Ann Marie Cody
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 101 (2024)
The SETI Ellipsoid is a strategy for technosignature candidate selection that assumes that extraterrestrial civilizations who have observed a galactic-scale event—such as supernova 1987A—may use it as a Schelling point to broadcast synchronized s
Externí odkaz:
https://doaj.org/article/058117c12d94410e80a262770df598f5
Publikováno v:
The Astronomical Journal, Vol 167, Iss 1, p 20 (2023)
Never before has the detection and characterization of exoplanets via transit photometry been as promising and feasible as it is now, due to the increasing breadth and sensitivity of time domain optical surveys. Past works have made use of phase-fold
Externí odkaz:
https://doaj.org/article/9944812491ea48d1beb47b13f83d514b
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:
Megan G. Li, Sofia Z. Sheikh, Christian Gilbertson, Matthias Y. He, Howard Isaacson, Steve Croft, Evan L. Sneed
Publikováno v:
The Astronomical Journal, Vol 166, Iss 5, p 182 (2023)
A stable-frequency transmitter with relative radial acceleration to a receiver will show a change in received frequency over time, known as a “drift rate.” For a transmission from an exoplanet, we must account for multiple components of drift rat
Externí odkaz:
https://doaj.org/article/16528fba08f7472990ccc6cfe2c22cc8
Publikováno v:
The Astronomical Journal, Vol 166, Iss 2, p 79 (2023)
Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space. With the variab
Externí odkaz:
https://doaj.org/article/3d3b16566dfb4b5eab45475ce536dfcc
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:
Anna Zuckerman, Zoe Ko, Howard Isaacson, Steve Croft, Danny Price, Matt Lebofsky, Andrew Siemion
Publikováno v:
The Astronomical Journal, Vol 165, Iss 3, p 114 (2023)
The Search for Extraterrestrial Intelligence has traditionally been conducted at radio wavelengths, but optical searches are well-motivated and increasingly feasible due to the growing availability of high-resolution spectroscopy. We present a data a
Externí odkaz:
https://doaj.org/article/87ac63990ef24435922c5b500a046555
Autor:
Sofia Z. Sheikh, Shubham Kanodia, Emily Lubar, Graduate SETI Course at Penn State, William P. Bowman, Caleb I. Cañas, Christian Gilbertson, Mariah G. MacDonald, Jason Wright, The Breakthrough Listen Initiative, David MacMahon, Steve Croft, Danny Price, Andrew Siemion, Jamie Drew, S. Pete Worden, Elizabeth Trenholm
Publikováno v:
The Astronomical Journal, Vol 165, Iss 2, p 61 (2023)
Agrowing avenue for determining the prevalence of life beyond Earth is to search for “technosignatures” from extraterrestrial intelligences/agents. Technosignatures require significant energy to be visible across interstellar space and thus inten
Externí odkaz:
https://doaj.org/article/b46863a3f511496c8d366de157106a3a