On The Timescale Forcing in Astrobiology

Abstract

We investigate the effects of correlated global regulation mechanisms, especially Galactic gamma-ray bursts (GRBs), on the temporal distribution of hypothetical inhabited planets, using simple Monte Carlo numerical experiments. Starting with recently obtained models of planetary ages in the Galactic Habitable Zone (GHZ), we obtain that the times required for biological evolution on habitable planets of the Milky Way are highly correlated. These results run contrary to the famous anti-SETI anthropic argument of Carter, and give tentative support to the ongoing and future SETI observation projects.

6 pages, 4 figures, preliminary report, published in Serbian Astronomical Journal, vol. 175, 45-50

References in corpus (13)

• The Galactic Habitable Zone and the Age Distribution of Complex Life in the Milky Way
• A Dying Universe: The Long Term Fate and Evolution of Astrophysical Objects
• The Expected Redshift Distribution of Gamma-Ray Bursts
• The Spiral Structure of the Milky Way, Cosmic Rays, and Ice Age Epochs on Earth
• An Estimate of the Age Distribution of Terrestrial Planets in the Universe: Quantifying Metallicity as a Selection Effect
• Astrophysical and Astrobiological Implications of Gamma-Ray Burst Properties
• The Temporal Aspect of the Drake Equation and SETI
• Terrestrial Implications of Cosmological Gamma-Ray Burst Models
• Terrestrial Ozone Depletion Due to a Milky Way Gamma-Ray Burst
• Mass Extinctions and The Sun's Encounters with Spiral Arms
• How Rare Are Extraterrestrial Civilizations and When Did They Emerge?
• Biological Effects of Stellar Collapse Neutrinos
• Volcanogenic Dark Matter and Mass Extinctions

Cited by in corpus (16)

• A Stochastic Process Approach of the Drake Equation Parameters
• Evaluating Galactic Habitability Using High Resolution Cosmological Simulations of Galaxy Formation
• Terrestrial planets across space and time
• A Numerical Testbed for Hypotheses of Extraterrestrial Life and Intelligence
• Fermi's Paradox - The Last Challenge for Copernicanism?
• Numerical Testing of The Rare Earth Hypothesis using Monte Carlo Realisation Techniques
• Galactic Punctuated Equilibrium: How to Undermine Carter's Anthropic Argument in Astrobiology
• Long-Term Prospects: Mitigation of Supernova and Gamma-Ray Burst Threat to Intelligent Beings
• If Loud Aliens Explain Human Earliness, Quiet Aliens Are Also Rare
• The Galactic Club, or Galactic Cliques? Exploring the limits of interstellar hegemony and the Zoo Hypothesis
• Predator-Prey Behaviour in Self-Replicating Interstellar Probes
• Virulence as a Model for Interplanetary and Interstellar Colonisation - Parasitism or Mutualism
• Can Collimated Extraterrestrial Signals be Intercepted?
• Searching for Cost Optimized Interstellar Beacons
• The Entropy Principle and the Influence of Sociological Pressures on SETI
• Seafloor Weathering and Stochastic Outgassing Unlikely to Significantly Shorten the Future Lifespan of Earth's Terrestrial Biosphere