English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report on a search for engineered signals from a sample of 692 nearbystars using the Robert C. Byrd Green Bank Telescope, undertaken as part of the$Breakthrough~Listen~Initiative$ search for extraterrestrial intelligence.Observations were made over 1.1$-$1.9 GHz (L band), with three sets offive-minute observations of the 692 primary targets, interspersed withfive-minute observations of secondary targets. By comparing the "ON" and "OFF"observations we are able to identify terrestrial interference and place limitson the presence of engineered signals from putative extraterrestrialcivilizations inhabiting the environs of the target stars. During the analysis,eleven events passed our thresholding algorithm, but a detailed analysis oftheir properties indicates they are consistent with known examples ofanthropogenic radio frequency interference. We conclude that, at the time ofour observations, none of the observed systems host high-duty-cycle radiotransmitters emitting between 1.1 and 1.9 GHz with an Equivalent IsotropicRadiated Power of $\sim10^{13}$ W, which is readily achievable by our owncivilization. Our results suggest that fewer than $\sim$ 0.1$\%$ of the stellarsystems within 50 pc possess the type of transmitters searched in this survey.

The Breakthrough Listen Search for Intelligent Life: 1.1-1.9 GHz observations of 692 Nearby Stars