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9 papers · 2 filters
The Fermi Bubble as a Source of Cosmic Rays in the Energy Range > 10E15 eV
K. S. Cheng, D. O. Chernyshov, V. A. Dogiel +3
The {\it Fermi} Large Area Telescope has recently discovered two giant gamma-ray bubbles which extend north and south of the Galactic center with diameters and heights of the order…
Panchromatic observations of the textbook GRB 110205A: constraining physical mechanisms of prompt emission and afterglow
W. Zheng, R. F. Shen, T. Sakamoto +56
We present a comprehensive analysis of a bright, long duration (T90 ~ 257 s) GRB 110205A at redshift z= 2.22. The optical prompt emission was detected by Swift/UVOT, ROTSE-IIIb and…
Time-Frequency Analysis of Superorbital Modulation of X-ray Binary SMC X-1 by Hilbert-Huang Transform
Chin-Ping Hu, Yi Chou, Ming-Chya Wu +2
The high-mass X-ray binary (HMXB) SMC X-1 exhibits a superorbital modulation with a dramatically varying period ranging between ~40 d and ~60 d. This research studies the time-freq…
Isotopic Composition of Light Nuclei in Cosmic Rays: Results from AMS-01
01 Collaboration
The variety of isotopes in cosmic rays allows us to study different aspects of the processes that cosmic rays undergo between the time they are produced and the time of their arriv…
Fermi-LAT Observations of Markarian 421: the Missing Piece of its Spectral Energy Distribution
LAT collaboration, A. A. Abdo et al., the MAGIC collaboration +4
We report on the gamma-ray activity of the high-synchrotron-peaked BL Lacertae object Mrk 421 during the first 1.5 years of Fermi operation, from 2008 August 5 to 2010 March 12. We…
Constraints on the Mass and Radius of the Neutron Star XTE J1807-294
Denis A. Leahy, Sharon M. Morsink, Yi Chou
The accreting millisecond pulsar XTE J1807-294 is studied through a pulse shape modeling analysis. The model includes blackbody and Comptonized emission from the one visible hot sp…