Primordial Black Holes as Heat Sources for Living Systems with Longest Possible Lifetimes

TL;DR

This paper proposes that primordial black holes could serve as long-lasting heat sources for potential extraterrestrial life, lasting up to 10^32 years, and should be considered in astrobiology.

Contribution

It introduces the novel idea that primordial black holes can act as stable, long-lived energy sources for living systems in an expanding universe.

Findings

PBHs could last up to 10^32 years as energy sources.

PBHs with solar surface temperatures are viable for supporting life.

Implications for exobiology and the search for extraterrestrial life.

Abstract

Just forty years ago, Hawking wrote his famous paper on primordial black holes (PBH). There have been since innumerable discussions on the consequences of the existence of such exotic objects and ramifications of their properties. Here we suggest that PBH's in an ever expanding universe (as implied by dark energy domination, especially of a cosmological constant) could be the ultimate repository for long lived living systems. PBH's having solar surface temperatures would last 10^32 years as a steady power source and should be considered in any discussion on exobiological life.