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Related papers: Sensitive Multi-beam Targeted SETI Observations to…

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The Kepler Mission is monitoring the brightness of ~150,000 stars searching for evidence of planetary transits. As part of the "Hunt for Exomoons with Kepler" (HEK) project, we report a planetary system with two confirmed planets and one…

Earth and Planetary Astrophysics · Physics 2015-06-11 David Nesvorny , David M. Kipping , Lars A. Buchhave , Gáspár Á. Bakos , Joel Hartman , Allan Schmitt

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…

Earth and Planetary Astrophysics · Physics 2023-11-03 Megan G. Li , Sofia Z. Sheikh , Christian Gilbertson , Matthias Y. He , Howard Isaacson , Steve Croft , Evan L. Sneed

In recent years, thanks to new facilities such as LOFAR capable of sensitive observations, much work has been done on the detection of stellar radio emission at low frequencies. Such emission has commonly been shown to be coherent emission,…

Detection of a planetary ring of exoplanets remains as one of the most attractive but challenging goals in the field. We present a methodology of a systematic search for exoplanetary rings via transit photometry of long-period planets. The…

Earth and Planetary Astrophysics · Physics 2017-04-05 Masataka Aizawa , Sho Uehara , Kento Masuda , Hajime Kawahara , Yasushi Suto

The scope of the project "A PSF-based Approach to TESS High Quality data Of Stellar clusters" (PATHOS) is the extraction and analysis of high-precision light curves of stars in stellar clusters and young associations for the identification…

Earth and Planetary Astrophysics · Physics 2020-06-10 D. Nardiello , G. Piotto , M. Deleuil , L. Malavolta , M. Montalto , L. R. Bedin , L. Borsato , V. Granata , M. Libralato , E. E. Manthopoulou

The Breakthrough Listen Initiative, as part of its larger mission, is performing the most thorough technosignature search of nearby stars. Additionally, Breakthrough Listen is collaborating with scientists working on NASAs Transiting…

Searches for radio technosignatures place constraints on the prevalence of extraterrestrial transmitters in our Galaxy and beyond. It is important to account for the complete stellar population captured within a radio telescope's field of…

Instrumentation and Methods for Astrophysics · Physics 2025-11-26 Louisa A. Mason , Michael A. Garrett , Andrew P. V. Siemion

The coherent low-frequency radio emission detected by LOFAR from Gliese 1151, a quiescent M4.5 dwarf star, has radio emission properties consistent with theoretical expectations of star-planet interactions for an Earth-sized planet on a 1-5…

Almost all SETI searches to date have explicitly targeted stars in the hope of detecting artificial radio or optical transmissions. It is argued that extra-terrestrials (ET) might regard sending physical probes to our own Solar System as a…

Popular Physics · Physics 2021-06-09 John Gertz

The search for extraterrestrial intelligence by looking for signals from advanced technological civilizations has been ongoing for some decades. We suggest that it could possibly be made more efficient by focusing on stars from which the…

Earth and Planetary Astrophysics · Physics 2009-03-10 Shmuel Nussinov

The photometric precision, monitoring baselines, and rapid, even sampling rates required by modern satellites designed for detecting the signal of transiting exoplanets are ideally suited to a large number of applications in high-energy…

Instrumentation and Methods for Astrophysics · Physics 2019-04-22 Krista Lynne Smith

The TEDI (TripleSpec - Exoplanet Discovery Instrument) will be the first instrument fielded specifically for finding low-mass stellar companions. The instrument is a near infra-red interferometric spectrometer used as a radial velocimeter.…

We consider interstellar scintillations as a cause of intermittency in radio signals from extraterrestrial intelligence (ETI). We demonstrate that scintillations are very likely to allow initial detections of narrowband signals from distant…

Astrophysics · Physics 2009-10-30 James M. Cordes , T. Joseph W. Lazio , Carl Sagan

We summarize the red channel (2-5 micron) of the Planetary Systems Imager (PSI), a proposed second-generation instrument for the TMT. Cold exoplanets emit the majority of their light in the thermal infrared, which means these exoplanets can…

3I/ATLAS is the third confirmed interstellar object passing through the Solar System. In this work, we conduct narrowband radio technosignature search toward 3I/ATLAS using the Five-hundred-meter Aperture Spherical Telescope (FAST) L-band…

Instrumentation and Methods for Astrophysics · Physics 2026-03-20 Jian-Kang Li , Zhen-Zhao Tao , Tong-Jie Zhang

To date, the search for radio technosignatures has focused on sky location as a primary discriminant between technosignature candidates and anthropogenic radio frequency interference (RFI). In this work, we investigate the possibility of…

Instrumentation and Methods for Astrophysics · Physics 2023-07-19 Bryan Brzycki , Andrew P. V. Siemion , Imke de Pater , James M. Cordes , Vishal Gajjar , Brian Lacki , Sofia Sheikh

Much work in SETI has focused on detecting radio broadcasts due to extraterrestrial intelligence, but there have been limited efforts to transmit messages over interstellar distances. As a check if such messages can be interpreted once…

Instrumentation and Methods for Astrophysics · Physics 2011-01-20 Michael W. Busch , Rachel M. Reddick

A region 140 square degrees toward the Galactic Centre was searched for monochromatic optical light, both pulses shorter than 1 sec and continuous emission. A novel instrument was constructed that acquires optical spectra of every point…

Earth and Planetary Astrophysics · Physics 2022-09-07 Geoffrey W. Marcy , Nathaniel K. Tellis , Edward H. Wishnow

We report the results of a 154 MHz survey to search for emission from exoplanets located in the Upper Scorpius subgroup of the Sco Cen OB2 Association, the closest substantial region of recent star formation. This survey is different from…

Solar and Stellar Astrophysics · Physics 2017-03-09 C. R. Lynch , Tara Murphy , D. L. Kaplan , M. Ireland , M. E. Bell