Several recent works have proposed “stellar relay” transmission systems in which a spacecraft at the focus of a star’s gravitational lens achieves dramatic boosts in the gain of an outgoing […]
astro-ph.IM
Posted inSETI & Technosignatures
Intermittent Signals And Planetary Days In SETI
Interstellar signals might be intermittent for many reasons, such as targeted sequential transmissions, or isotropic broadcasts that are not on continuously, or many other reasons. The time interval between such […]
Posted inExoplanets, -moons, -comets
The Pandora SmallSat: Multiwavelength Characterization of Exoplanets and their Host Stars
Pandora is a SmallSat mission designed to study the atmospheres of exoplanets, and was selected as part of NASA’s Astrophysics Pioneers Program. Transmission spectroscopy of transiting exoplanets provides our best […]
Posted inSETI & Technosignatures
A Machine-Learning-Based Direction-of-Origin Filter for the Identification of Radio Frequency Interference in the Search for Technosignatures
Radio frequency interference (RFI) mitigation remains a major challenge in the search for radio technosignatures. Typical mitigation strategies include a direction-of-origin (DoO) filter, where a signal is classified as RFI […]
Posted inExoplanets, -moons, -comets
The Keck Planet Imager and Characterizer: A Dedicated Single-mode Fiber Injection Unit For High Resolution Exoplanet Spectroscopy
The Keck Planet Imager and Characterizer (KPIC) is a purpose-built instrument to demonstrate new technological and instrumental concepts initially developed for the exoplanet direct imaging field. Located downstream of the […]
Posted inSETI & Technosignatures
SETI in 2020
In the spirit of Trimble’s “Astrophysics in XXXX” series, I very briefly and subjectively review developments in SETI in 2020. My primary focus is 74 papers and books published or […]
Posted inSETI & Technosignatures
Strategies and Advice for the Search for Extraterrestrial Intelligence (SETI)
As a guide for astronomers new to the field of technosignature search (i.e. SETI), I present an overview of some of its observational and theoretical approaches. I review some of […]
Posted inAstrochemistry
Systems Astrochemistry: A New Doctrine for Experimental Studies
Laboratory experiments play a key role in deciphering the chemistry of the interstellar medium (ISM) and the role that product complex organic molecules (COMs) may play in the origins of […]
Posted inSETI & Technosignatures
Furthering A Comprehensive SETI Bibliography
In 2019, Reyes & Wright used the NASA Astrophysics Data System (ADS) to initiate a comprehensive bibliography for SETI accessible to the public. Since then, updates to the library have […]
Posted inAstrochemistry
VIZSLA — Versatile Ice Zigzag Sublimation Setup For Laboratory Astrochemistry
In this article a new, multi-functional, high-vacuum astrophysical ice setup, VIZSLA (Versatile Ice Zigzag Sublimation Setup for Laboratory Astrochemistry), is introduced. The instrument allows the investigation of astrophysical processes both […]