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Featured researches published by Allen D. Zych.


Astrophysics and Space Science | 2005

THE SPIRAL ARM CONNECTION OF EGRET UNIDENTIFIED SOURCES

Torafumi Miyagi; Dipen Bhattacharya; Allen D. Zych

Based on a LogN-LogS relation we have shown that the EGRET unidentified source (UnidS) distribution closely follows the Galactic spiral arm structure. This seems to satisfy the hypothesis that the EGRET UnidS arise due to energetic interactions with molecular clouds that reside on the spiral arms. Furthermore, the luminosity distribution of the unidentified sources features a double Gaussian distribution. We suggest that a combined distribution of OB associations, SNR and superbubbles interacting with molecular clouds within the spiral arms are the most likely counterparts of the unidentified sources.


Archive | 2000

10-100 MeV Gamma-Ray Astronomy with GLAST

Allen D. Zych; Debashish Bhattacharya; David D. Dixon; Tim O'Neill; J. Samimi; Ahmet Oguz Akyuz


Archive | 2009

Balloon Flight Performance and Preliminary Results of the Prototype Tracking and Imaging Gamma-Ray Experiment (TIGRE)

Allen D. Zych; Tim O'Neill; Debashish Bhattacharya; Ernest Harris; Kazuya Kamiya; Charity Trojanowski


Archive | 2008

Preliminary Balloon Flight Results with Prototype TIGRE Gamma-Ray Instrument

Allen D. Zych; Tim O'Neill; Debashish Bhattacharya; Ernest Harris; Kazuya Kamiya; Charity Trojanowski; Sitara Wijeratne


Archive | 2008

First Balloon Flight with the Prototype Tracking and Imaging Gamma-Ray Experiment (TIGRE)

Allen D. Zych; Terrence John O'Neill; Dipen Bhttacharya; Eric Harris; Charity Trojanowski; Kaoru Kamiya; Sitara Wijeratne


Archive | 2008

Analysis Of The Balloon-flight Data Of TIGRE Gamma-ray Instrument

Dipen Bhattacharya; Ernest Harris; Heman Chao; Kazuya Kamiya; Tim O'Neill; Allen D. Zych


Archive | 2006

TIGRE Gamma-Ray Balloon Experiment

Allen D. Zych; Tim O'Neill; Debashish Bhattacharya; Charity Trojanowski; Mark Polsen; V. Kong; Sitara Wijeratne


Archive | 2004

Relative Point Source Sensitivities with Tracking Compton Telescopes

Mark Polsen; Ahmet Oguz Akyuz; Debashish Bhattacharya; Tim O'Neill; J. Samimi; Allen D. Zych


Archive | 2002

Effect of Doppler broadening on the resolution of Compton telescopes

Ahmet Oguz Akyuz; Debashish Bhattacharya; V. Kong; T. Miyagi; T. J. O' Neill; Mark Polsen; J. Samimi; Allen D. Zych


Archive | 2002

TIGRE Prototype Gamma-Ray Balloon Experiment

Tim O'Neill; Debashish Bhattacharya; J. Samimi; Mark Polsen; T. Miyagi; V. Kong; J. Metelsky; Ahmet Oguz Akyuz; Allen D. Zych

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David D. Dixon

University of California

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T. Miyagi

University of California

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Mark Polsen

University of California

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Dipen Bhattacharya

Goddard Space Flight Center

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C. E. Covault

Case Western Reserve University

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David T. Gregorich

California Institute of Technology

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