306 citations · 2.9k across the 108 of their papers we have counts for
6 papers · 2 filters
Modeling atmospheric effects of the September 1859 Solar Flare
Brian Thomas, Charles Jackman, Adrian Melott
We have modeled atmospheric effects, especially ozone depletion, due to a solar proton event which probably accompanied the extreme magnetic storm of 1-2 September 1859. We use an…
Fossil Biodiversity: Red Noise Plus Signal
Adrian L. Melott, Bruce S. Lieberman
We have examined the Fourier power spectrum as well as the Hurst exponent of extinction, origination, and total biodiversity in the marine fossil record, using a recently improved…
Comment on: Protecting Life in the Milky Way: Metals Keep the GRBs Away by Stanek et al
Adrian L. Melott
Stanek et al. (astro-ph/0604113) have noted that the four low-redshift long-duration gamma-ray bursts (LSB) observed to date all occurred in faint, metal-poor galaxies. Given this…
Terrestrial Consequences of Spectral and Temporal Variability in Ionizing Photon Events
Larissa M. Ejzak, Adrian L. Melott, Mikhail V. Medvedev +1
Gamma-Ray Bursts (GRBs) directed at Earth from within a few kpc may have damaged the biosphere, primarily though changes in atmospheric chemistry which admit greatly increased Sola…
Do extragalactic cosmic rays induce cycles in fossil diversity?
Mikhail V. Medvedev, Adrian L. Melott
Recent work has revealed a 62 (+/-) 3-million-year cycle in the fossil diversity in the past 542 My, however no plausible mechanism has been found. We propose that the cycle may be…
Gamma-ray bursts and terrestrial planetary atmospheres
Brian C. Thomas, Adrian L. Melott
We describe results of modeling the effects on Earth-like planets of long-duration gamma-ray bursts (GRBs) within a few kiloparsecs. A primary effect is generation of nitrogen oxid…