Search Results - "Melott, Adrian"

Stellar astrophysics: Supernovae in the neighbourhood by Melott, Adrian L

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Cosmic rays and terrestrial life: A brief review by Atri, Dimitra, Melott, Adrian L.

“…“The investigation into the possible effects of cosmic rays on living organisms will also offer great interest.” – Victor F. Hess, Nobel Lecture, December 12,…”
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Supernova triggers for end-Devonian extinctions by Fields, Brian D., Melott, Adrian L., Ellis, John, Ertel, Adrienne F., Fry, Brian J., Lieberman, Bruce S., Miller, Jesse A., Thomas, Brian C.

“…The Late Devonian was a protracted period of low speciation resulting in biodiversity decline, culminating in extinction events near the Devonian–Carboniferous…”
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X-Ray-luminous Supernovae: Threats to Terrestrial Biospheres by Brunton, Ian R., O’Mahoney, Connor, Fields, Brian D., Melott, Adrian L., Thomas, Brian C.

“…The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and…”
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Gamma-ray bursts: not so much deadlier than we thought by Thomas, Brian C, Atri, Dimitra, Melott, Adrian L

“…ABSTRACT We analyse the additional effect on planetary atmospheres of recently detected gamma-ray burst afterglow photons in the range up to 1 TeV. For an…”
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Supernovae in the neighbourhood by Melott, Adrian L.

“…Detailed measurements of radioisotopes in deep-sea deposits, plus modelling of how they reached Earth, indicate that many supernovae have occurred near enough…”
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Astrophysical ionizing radiation and Earth: a brief review and census of intermittent intense sources by Melott, Adrian L, Thomas, Brian C

“…Cosmic radiation backgrounds are a constraint on life, and their distribution will affect the Galactic Habitable Zone. Life on Earth has developed in the…”
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Analysis of periodicity of extinction using the 2012 geological timescale by Melott, Adrian L, Bambach, Richard K

“…Analysis of two independent data sets with increased taxonomic resolution (genera rather than families) using the revised 2012 timescale reveals that an…”
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A Possible Role for Stochastic Astrophysical Ionizing Radiation Events in the Systematic Disparity between Molecular and Fossil Dates by Melott, Adrian L

“…Major discrepancies have been noted for some time between fossil ages and molecular divergence dates for a variety of taxa. Recently, systematic trends within…”
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Atmospheric ionization by high‐fluence, hard‐spectrum solar proton events and their probable appearance in the ice core archive by Melott, Adrian L., Thomas, Brian C., Laird, Claude M., Neuenswander, Ben, Atri, Dimitra

“…Solar energetic particles ionize the atmosphere, leading to production of nitrogen oxides. It has been suggested that some such events are visible as layers of…”
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DO PERIODICITIES IN EXTINCTION—WITH POSSIBLE ASTRONOMICAL CONNECTIONS—SURVIVE A REVISION OF THE GEOLOGICAL TIMESCALE? by Melott, Adrian L, Bambach, Richard K

“…A major revision of the geological timescale was published in 2012. We re-examine our past finding of a 27 Myr periodicity in marine extinction rates by…”
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Biological implications of high-energy cosmic ray induced muon flux in the extragalactic shock model by Atri, Dimitra, Melott, Adrian L.

“…A ∼62 My periodicity in fossil biodiversity has been observed in independent studies of paleontology databases over ∼0.5Gy. The period and phase of this…”
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Nitrate deposition following an astrophysical ionizing radiation event by Neuenswander, Ben, Melott, Adrian

“…It is known that a gamma ray burst (GRB) originating near the Earth could be devastating to life. The mechanism of ozone depletion and subsequent increased UVB…”
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Long-term cycles in the history of life: periodic biodiversity in the paleobiology database by Melott, Adrian L

“…Time series analysis of fossil biodiversity of marine invertebrates in the Paleobiology Database (PBDB) shows a significant periodicity at approximately 63 My,…”
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A link between solar events and congenital malformations: Is ionizing radiation enough to explain it? by Overholt, Andrew C., Melott, Adrian L., Atri, Dimitra

“…Cosmic rays are known to cause biological effects directly and through ionizing radiation produced by their secondaries. These effects have been detected in…”
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Extraordinary Biomass-Burning Episode and Impact Winter Triggered by the Younger Dryas Cosmic Impact ̃12,800 Years Ago. 2. Lake, Marine, and Terrestrial Sediments by Wolbach, Wendy S., Ballard, Joanne P., Mayewski, Paul A., Parnell, Andrew C., Cahill, Niamh, Adedeji, Victor, Bunch, Ted E., Domínguez-Vázquez, Gabriela, Erlandson, Jon M., Firestone, Richard B., French, Timothy A., Howard, George, Israde-Alcántara, Isabel, Johnson, John R., Kimbel, David, Kinzie, Charles R., Kurbatov, Andrei, Kletetschka, Gunther, LeCompte, Malcolm A., Mahaney, William C., Melott, Adrian L., Mitra, Siddhartha, Maiorana-Boutilier, Abigail, Moore, Christopher R., Napier, William M., Parlier, Jennifer, Tankersley, Kenneth B., Thomas, Brian C., Wittke, James H., West, Allen, Kennett, James P.

“…Part 1 of this study investigated evidence of biomass burning in global ice records, and here we continue to test the hypothesis that an impact event at the…”
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Nemesis reconsidered by Melott, Adrian L., Bambach, Richard K.

“…The hypothesis of a companion object (Nemesis) orbiting the Sun was motivated by the claim of a terrestrial extinction periodicity, thought to be mediated by…”
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Modeling high-energy cosmic ray induced terrestrial muon flux: A lookup table by Atri, Dimitra, Melott, Adrian L.

“…On geological timescales, the Earth is likely to be exposed to an increased flux of high-energy cosmic rays (HECRs) from astrophysical sources such as nearby…”
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Modeling cosmic ray proton induced terrestrial neutron flux: A look-up table by Overholt, Andrew C., Melott, Adrian L., Atri, Dimitra

“…Neutrons contribute a significant radiation dose at commercial passenger airplane altitudes. With cosmic ray energies > 1 GeV, these effects could, in…”
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Extraordinary Biomass-Burning Episode and Impact Winter Triggered by the Younger Dryas Cosmic Impact ̃12,800 Years Ago. 1. Ice Cores and Glaciers by Wolbach, Wendy S., Ballard, Joanne P., Mayewski, Paul A., Adedeji, Victor, Bunch, Ted E., Firestone, Richard B., French, Timothy A., Howard, George A., Israde-Alcántara, Isabel, Johnson, John R., Kimbel, David, Kinzie, Charles R., Kurbatov, Andrei, Kletetschka, Gunther, LeCompte, Malcolm A., Mahaney, William C., Melott, Adrian L., Maiorana-Boutilier, Abigail, Mitra, Siddhartha, Moore, Christopher R., Napier, William M., Parlier, Jennifer, Tankersley, Kenneth B., Thomas, Brian C., Wittke, James H., West, Allen, Kennett, James P.

“…The Younger Dryas boundary (YDB) cosmic-impact hypothesis is based on considerable evidence that Earth collided with fragments of a disintegrating…”
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