The G infrared search for extraterrestrial civilizations with large energy supplies. II. Framework, strategy, and first result

Jason Wright, R. L. Griffith, Steinn Sigurdsson, M. S. Povich, B. Mullan

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We describe the framework and strategy of the G infrared search for extraterrestrial civilizations with large energy supplies, which will use the wide-field infrared surveys of WISE and Spitzer to search for these civilizations' waste heat. We develop a formalism for translating mid-infrared photometry into quantitative upper limits on extraterrestrial energy supplies. We discuss the likely sources of false positives, how dust can and will contaminate our search, and prospects for distinguishing dust from alien waste heat. We argue that galaxy-spanning civilizations may be easier to distinguish from natural sources than circumstellar civilizations (i.e., Dyson spheres), although GAIA will significantly improve our capability to identify the latter. We present a zeroth order null result of our search based on the WISE all-sky catalog: we show, for the first time, that Kardashev Type III civilizations (as Kardashev originally defined them) are very rare in the local universe. More sophisticated searches can extend our methodology to smaller waste heat luminosities, and potentially entirely rule out (or detect) both Kardashev Type III civilizations and new physics that allows for unlimited "free" energy generation.

Original languageEnglish (US)
Article number27
JournalAstrophysical Journal
Volume792
Issue number1
DOIs
StatePublished - Sep 1 2014

Fingerprint

waste heat
civilization
Wide-field Infrared Survey Explorer
dust
infrared photometry
translating
catalogs
sky
energy
universe
free energy
luminosity
methodology
galaxies
formalism
physics
energy supply

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

@article{be6086814b8644e5b1f13523b18e7e1d,
title = "The G infrared search for extraterrestrial civilizations with large energy supplies. II. Framework, strategy, and first result",
abstract = "We describe the framework and strategy of the G infrared search for extraterrestrial civilizations with large energy supplies, which will use the wide-field infrared surveys of WISE and Spitzer to search for these civilizations' waste heat. We develop a formalism for translating mid-infrared photometry into quantitative upper limits on extraterrestrial energy supplies. We discuss the likely sources of false positives, how dust can and will contaminate our search, and prospects for distinguishing dust from alien waste heat. We argue that galaxy-spanning civilizations may be easier to distinguish from natural sources than circumstellar civilizations (i.e., Dyson spheres), although GAIA will significantly improve our capability to identify the latter. We present a zeroth order null result of our search based on the WISE all-sky catalog: we show, for the first time, that Kardashev Type III civilizations (as Kardashev originally defined them) are very rare in the local universe. More sophisticated searches can extend our methodology to smaller waste heat luminosities, and potentially entirely rule out (or detect) both Kardashev Type III civilizations and new physics that allows for unlimited {"}free{"} energy generation.",
author = "Jason Wright and Griffith, {R. L.} and Steinn Sigurdsson and Povich, {M. S.} and B. Mullan",
year = "2014",
month = "9",
day = "1",
doi = "10.1088/0004-637X/792/1/27",
language = "English (US)",
volume = "792",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",

}

The G infrared search for extraterrestrial civilizations with large energy supplies. II. Framework, strategy, and first result. / Wright, Jason; Griffith, R. L.; Sigurdsson, Steinn; Povich, M. S.; Mullan, B.

In: Astrophysical Journal, Vol. 792, No. 1, 27, 01.09.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The G infrared search for extraterrestrial civilizations with large energy supplies. II. Framework, strategy, and first result

AU - Wright, Jason

AU - Griffith, R. L.

AU - Sigurdsson, Steinn

AU - Povich, M. S.

AU - Mullan, B.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - We describe the framework and strategy of the G infrared search for extraterrestrial civilizations with large energy supplies, which will use the wide-field infrared surveys of WISE and Spitzer to search for these civilizations' waste heat. We develop a formalism for translating mid-infrared photometry into quantitative upper limits on extraterrestrial energy supplies. We discuss the likely sources of false positives, how dust can and will contaminate our search, and prospects for distinguishing dust from alien waste heat. We argue that galaxy-spanning civilizations may be easier to distinguish from natural sources than circumstellar civilizations (i.e., Dyson spheres), although GAIA will significantly improve our capability to identify the latter. We present a zeroth order null result of our search based on the WISE all-sky catalog: we show, for the first time, that Kardashev Type III civilizations (as Kardashev originally defined them) are very rare in the local universe. More sophisticated searches can extend our methodology to smaller waste heat luminosities, and potentially entirely rule out (or detect) both Kardashev Type III civilizations and new physics that allows for unlimited "free" energy generation.

AB - We describe the framework and strategy of the G infrared search for extraterrestrial civilizations with large energy supplies, which will use the wide-field infrared surveys of WISE and Spitzer to search for these civilizations' waste heat. We develop a formalism for translating mid-infrared photometry into quantitative upper limits on extraterrestrial energy supplies. We discuss the likely sources of false positives, how dust can and will contaminate our search, and prospects for distinguishing dust from alien waste heat. We argue that galaxy-spanning civilizations may be easier to distinguish from natural sources than circumstellar civilizations (i.e., Dyson spheres), although GAIA will significantly improve our capability to identify the latter. We present a zeroth order null result of our search based on the WISE all-sky catalog: we show, for the first time, that Kardashev Type III civilizations (as Kardashev originally defined them) are very rare in the local universe. More sophisticated searches can extend our methodology to smaller waste heat luminosities, and potentially entirely rule out (or detect) both Kardashev Type III civilizations and new physics that allows for unlimited "free" energy generation.

UR - http://www.scopus.com/inward/record.url?scp=84906270484&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906270484&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/792/1/27

DO - 10.1088/0004-637X/792/1/27

M3 - Article

AN - SCOPUS:84906270484

VL - 792

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 27

ER -