"Lookup Tables to Compute
High Energy Cosmic Ray Induced Atmospheric Ionization and Changes in
Atmospheric Chemistry." Journal of Cosmology and Astroparticle
Physics (in press) (with D. Atri, A.L. Melott).
"Atmospheric Consequences of
Cosmic Ray Variability in the Extragalactic Shock Model: II Revised
Ionization Levels and Their Consequences." Journal of Geophysical
Research (in press) (with A.L. Melott, D. Atri, M.V. Medvedev, G.W.
Wilson, M.J. Murray).
"Cometary Airbursts and
Atmospheric Chemistry: Tunguska and a Candidate Younger Eryas Event."
Geology 38: 383 (2010) (with A.L. Melott, G. Dreschhoff, Carey K.
Johnson).
"Gamma-ray Bursts as a
Threat to Life on Earth." International Journal of Astrobiology 8:
183 (2009).
"An In-Class Discussion
Activity on the Nature of Science and Intelligent Design." The Physics
Teacher 47:106 (February 2009).
"Atmospheric Consequences of
Cosmic Ray Variability in the Extragalactic Shock Model." Journal of
Geophysical Research 113: E10007 (October 2008) (with A.L. Melott,
A.J. Krejci, M.V. Medvedev, G.W. Wilson, M.J. Murray).
"Amphibian Nitrate Stress as
an Additional Terrestrial Threat from Astrophysical Ionizing Radiation
Events?" Astrobiology 8: 731 (August 2008) (with M.D.
Honeyman).
Presentations
"Discussing Science and
Intelligent Design in a Physical Science Course," Mid-America
Regional Astrophysics Conference, Kansas City, Mo., April 2010
"Improving Estimates of
Biospheric Effects of Gamma-Ray Bursts," Astrobiology Science
Conference, Houston, Texas, April 2010
"Exploding Stars and the End
of the World," HiPACE Lecture, WU, February 2010
"A Scientist's Perspective
on Global Warming," Topeka Downtown Optimists, January 2010
"Not Another Disaster Movie!
Exploding Stars and the End of the World," Northeast Kansas Amateur
Astronomer League, Topeka, January 2010
Not Another Disaster Movie!
Exploding Stars and the End of the World," Newton (Kan.) High School
physics class, November 2009
"Late Ordovician Geographic
Patterns of Extinction Compared with Wimulations of Astrophysical Ionizing
Radiation Damage," Geological Society of America, Portland, Ore.,
October 2009
"Comparing Simulations of
Astrophysical Ionizing Radiation Damage with Late Ordovician Geographic
Patterns of Extinction," Mid-America Regional Astrophysics
Conference, Kansas City, Mo., April 2009 (with A.L. Melott)
"Late Ordovician Geographic
Patterns of Extinction Compared with Wimulations of Astrophysical Ionizing
Radiation Damage," Kansas Academy of Science, Topeka, March 2009
(with A.L. Melott)
"Gamma-Ray Bursts and the
Earth," Embedded Systems Laboratory symposium "Cosmic Cataclysms
and Life," Frascati, Italy, November 2008
Grants
'High Energy Cosmic Ray Effects
on Terrestrial Atmospheric Chemistry, 60,000 hours on Intel 64 cluster
(Abe)," National Center for Supercomputing Applications,
9/2009-9/2010. Dimitra Atri, co-investigator
"A Lookup Table to Compute
High Energy Cosmic Ray Effects on Terrestrial Atmospheric Chemistry,
50,000 hours," National Center for Supercomputian Applications,
8/2009-8/2010. Adrian Melott, co-investigator
"Astrophysical Ionizing Photon
Events and Primary Productivity of Earth's Oceans," NASA, $530,703
7/1/2009-6/30/2012. Adrian Melott and Patrick Neale,
co-investigators
Washburn International Travel
Grant November
Community
involvement
Think Big Topeka participant to
bring Google fiber project
Career mentor, University of the
pacific Alumni Mentor Network
Star party, College Hill
Neighborhood Association
Astronomy instructor Washburn
Merit Badge Day 2009
Astrobiology videoconference for
Lakin (Kan.) High physics class
Public
commentary
Interview, "Cosmic
Hazards" French TV, February 2010
Articles on work looking for
signatures of comet impacts in ice cores in online publications such as
Science Daily, December 2009
Work on terrestrial effects of
solar flares noted in report of National Research Council "Severe
Space Weather Events: Understanding Societal and Economic Impacts."
Work on gamma-ray bursts as a
threat to life on Earth top of National Geographic online article
(http://news.nationalgeographic.com/news/2009/04/090403-gamma-ray-extinction.html),
April 2009
Work on solar flares mentioned in
"Bracing for a Solar Superstorm," Scientific American, August
2008
Other
Articles referee, Annales
Geophysicae
Article referee, Journal of
Astrobiology
Manuscript referee, International
Year of Planet Earth Life volume (Springer Verlag on behalf of UNESCO)
