Dr. Allan J. Tylka Elected APS Fellow; Receives AGU Editors' Citation for Excellence

5/3/2006 - 22-06r
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Dr. Allan J. Tylka of the Naval Research Laboratory's Space Science Division has been twice recognized with honors recently. First, he was elected a Fellow of the American Physical Society (APS) in the Division of Astrophysics. Then, Dr. Tylka was selected by the American Geophysical Union (AGU) to receive the 2005 Editors' Citation for Excellence in Refereeing for the Journal of Geophysical Research-Space Physics.

APS recognized Dr. Tylka with election to fellowship "for innovative analyses of solar energetic particles that have clarified their origin, leadership in the field, and implementation of an engineering tool to assess their impact on satellite systems." The APS Fellowship Program was created to recognize members who may have made advances in knowledge through original research and publication or made significant and innovative contributions in the application of physics to science and technology. Election to APS Fellowship is limited to no more than one half of one percent of the membership.

In awarding the Editors' citation, AGU cited Dr. Tylka's contributions as "invaluable in maintaining a high quality standard for the Journal of Geophysical Research-Space Physics." Further, AGU notes that conscientious reviewing of submitted papers is one of the most important services performed for AGU. The citation will be presented at the AGU joint assembly in May.

Dr. Tylka has worked as a research physicist in the High Energy Space Environment Branch (formerly the Gamma & Cosmic Ray Astrophysics Branch) since 1985, where he has published more than 90 scientific papers, covering a wide range of problems, from cosmic-ray and gamma-ray signatures of weakly-interacting massive particles (WIMP) annihilation in the Galaxy to trapped anomalous cosmic rays in Earth's magnetosphere.

Since 1993, Dr. Tylka's research has focused primarily on solar energetic particles. He led analysis efforts on NRL's Heavy Ions in Space experiment, which yielded the only measurement to date of ionic charge states of solar Fe ions at very high energies. These results have been widely cited as a key piece of evidence in establishing CME-driven shocks as the source of gradual particle events. This work required precise new methods for analyzing the penetration of energetic particles into the magnetosphere during large geomagnetic disturbances.

Dr. Tylka also led the development of CREME96, a revision of NRL's Cosmic Ray Effects on Micro-Electronics code, which is used throughout the aerospace industry as a standard spacecraft design tool. Dr. Tylka's work has yielded new engineering models of the radiation hazards posed by solar heavy ions, which are also now in widespread use.

Currently, Dr. Tylka is currently involved in basic research on solar energetic particles using data from NASA's Wind and ACE satellites to investigate the physics of particle acceleration and transport. He is recognized as a leading expert on solar energetic particles and is frequently invited to speak about them at major national and international conferences and workshops.

Dr. Tylka holds a B.A. in physics and mathematics from Washington and Jefferson College in Washington, Pennsylvania, and an M.S. in physics from the University of Maryland. Following his study of high-energy particle physics at the Deutsches Elektronen-Synchrotron in Hamburg, Germany, Dr. Tylka received his Ph.D. in physics from the University of Maryland in 1984.

Dr. Tylka has been recognized with an Alan Berman Research Publication Award, an NRL Technology Transfer Award, and an NRL Invention Award. In addition to his memberships in APS and AGU, Dr. Tylka belongs to the American Astronomical Society, the International Astronomical Union, the American Association for the Advancement of Science, and Phi Beta Kappa.

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