Stellar Echo Imaging of Exoplanets, Phase II

Metadata Updated: July 17, 2020

All stars exhibit intensity fluctuations over several time scales, from nanoseconds to days; these intensity fluctuations echo off planetary bodies in the star system and provide an opportunity to detect and possibly image exoplanets using modern computational imaging techniques. A mission utilizing stellar echo detectors could provide continent-level imaging of exoplanets more readily than interferometric techniques, as high temporal resolution detection is less technically challenging and more cost effective than multikilometer-baseline fringe-tracking, particularly in a photon-starved regime. The concept is also viable for survey missions for detecting exoplanets at more diverse orbital inclinations than is possible with transit or radial velocity techniques.

Under a Phase I NIAC program, we evaluated the feasibility of the stellar echo technique and, while several practical constraints have been identified, we have not identified any fundamental limitations. We determined that the foundational technology already exists and has high TRL in space missions. Furthermore, the measurements required to demonstrate the feasibility of stellar echo detection are complementary to asteroseismology measurements, so a demonstration mission would provide high-value scientific information to other active astrophysics programs.

Under the Phase II program, we will continue to advance the theoretical understanding of stellar echo imaging, improve on the computational methods developed in Phase I, evaluate specific hardware implementations, and ultimately produce a roadmap for the demonstration of stellar echo detection and imaging of exoplanets.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_94020
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 62066f8b-7427-4e10-95ce-b29b432ebe33
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2019-03-01
Homepage URL
Data Last Modified 2020-01-29
Program Code 026:027
Source Datajson Identifier True
Source Hash 66e4dfbb85912f4b96edf2a86530844504649877
Source Schema Version 1.1

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