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Rapid Deceleration of Blast Waves Witnessed in Tycho's Supernova Remnant
Takaaki Tanaka, Tomoyuki Okuno, Hiroyuki Uchida +4
In spite of their importance as standard candles in cosmology and as major major sites of nucleosynthesis in the Universe, what kinds of progenitor systems lead to type Ia supernov…
Time Variability of Nonthermal X-ray Stripes in Tycho's Supernova Remnant with Chandra
Tomoyuki Okuno, Takaaki Tanaka, Hiroyuki Uchida +4
Analyzing Chandra data of Tycho's supernova remnant (SNR) taken in 2000, 2003, 2007, 2009, and 2015, we search for time variable features of synchrotron X-rays in the southwestern…
Spatially resolved spectroscopy of nonthermal X-rays in RX J1713.7-3946 with Chandra
Tomoyuki Okuno, Takaaki Tanaka, Hiroyuki Uchida +2
The young shell-type supernova remnant (SNR) RX J1713.7-3946 has been studied as a suitable target to test the SNR paradigm for the origin of Galactic cosmic rays. We present a spa…