Possibility of a coordinated signaling scheme in the Galaxy and SETI experiments

Naoki Seto

(Submitted on 1 Apr 2019)

We discuss a Galaxy-wide coordinated signaling scheme with which a SETI observer needs to examine a tiny fraction of the sky. The target sky direction is determined as a function of time, based on high-precision measurements of a progenitor of a conspicuous astronomical event such as a coalescence of a double neutron star binary. In various respects, such a coordinated scheme would be advantageous for both transmitters and receivers, and might be widely prevailing as a tacit adjustment. For this scheme, the planned space gravitational-wave detector LISA and its follow-on missions have a potential to narrow down the target sky area by a factor of 103-4, and could have a large impact on future SETI experiments.

Comments: 4 pages, 3 figures, accepted for publication in ApJL

Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM); Popular Physics (physics.pop-ph)

Cite as: arXiv:1904.00536 [astro-ph.IM] (or arXiv:1904.00536v1 [astro-ph.IM] for this version)

Submission history

From: Naoki Seto

[v1] Mon, 1 Apr 2019 02:05:40 UTC (138 KB)

https://arxiv.org/abs/1904.00536