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The Breakthrough Listen Search For Intelligent Life Near the Galactic Center I by Gajjar, Vishal; Perez, Karen I.; Siemion, Andrew P. V.; Foster, Griffin; Brzycki, Bryan; Chatterjee, Shami; Chen, Yuhong; Cordes, James M.; Croft, Steve; Czech, Daniel; DeBoer, David; DeMarines, Julia; Drew, Jamie; Gowanlock, Michael; Isaacson, Howard; Lacki, Brian C.; Lebofsky, Matt; MacMahon, David H. E.; Morrison, Ian S.; Ng, Cherry; de Pater, Imke; Price, Danny C.; Sheikh, Sofia Z.; Suresh, Akshay; Webb, Claire; Worden, S. Pete is a scholarly article available to read on EtoBox.

What is The Breakthrough Listen Search For Intelligent Life Near the Galactic Center I about?

A line-of-sight towards the Galactic Center (GC) offers the largest number of potentially habitable systems of any direction in the sky. The Breakthrough Listen program is undertaking the most sensitive and deepest targeted SETI surveys towards the GC. Here, we outline our observing strategies with Robert C. Byrd Green Bank Telescope (GBT) and Parkes telescope to conduct 600 hours of deep observations across 0.7--93 GHz. We report preliminary results from our survey for ETI beacons across 1--8 GHz with 7.0 and 11.2 hours of observations with Parkes and GBT, respectively. With our narrowband drifting signal search, we were able to place meaningful constraints on ETI transmitters across 1--4 GHz and 3.9--8 GHz with EIRP limits of $\geq$4$\times$10$^{18}$ W among 60 million stars and $\geq$5$\times$10$^{17}$ W among half a million stars, respectively. For the first time, we were able to constrain the existence of artificially dispersed transient signals across 3.9--8 GHz with EIRP $\geq$1$\times$10$^{14}$ W/Hz with a repetition period $\leq$4.3 hours. We also searched our 11.2 hours of deep observations of the GC and its surrounding region for Fast Radio Burst-like magnetars with the

Author

Gajjar, Vishal; Perez, Karen I.; Siemion, Andrew P. V.; Foster, Griffin; Brzycki, Bryan; Chatterjee, Shami; Chen, Yuhong; Cordes, James M.; Croft, Steve; Czech, Daniel; DeBoer, David; DeMarines, Julia; Drew, Jamie; Gowanlock, Michael; Isaacson, Howard; Lacki, Brian C.; Lebofsky, Matt; MacMahon, David H. E.; Morrison, Ian S.; Ng, Cherry; de Pater, Imke; Price, Danny C.; Sheikh, Sofia Z.; Suresh, Akshay; Webb, Claire; Worden, S. Pete

Published

2021

Language

EN