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The ASTRO-H X-ray Astronomy Satellite
Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley +250
The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions developed by the Institute of Space and Astronautical Science (ISAS), with a planne…
ASTRO-H White Paper - Accreting Pulsars, Magnetars, and Related Sources
S. Kitamoto, T. Enoto, S. Safi-Harb +18
As the endpoints of massive star evolution, neutron stars are enigmatic celestial objects characterized by extremely dense and exotic nuclear matter, magnetospheres with positrons…
ASTRO-H White Paper - Low-mass X-ray Binaries
C. Done, M. Tsujimoto, E. Cackett +20
There is still 10-20% uncertainty on the neutron star (NS) mass-radius relation. These uncertainties could be reduced by an order of magnitude through an unambiguous measure of M/R…
Anisotropic neutrino effect on magnetar spin: constraint on inner toroidal field
Yudai Suwa, Teruaki Enoto
The ultra-strong magnetic field of magnetars modifies the neutrino cross section due to the parity violation of the weak interaction and can induce asymmetric propagation of neutri…
Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61
Kazuo Makishima, Teruaki Enoto, Junko S. Hiraga +5
Magnetars are a special type of neutron stars, considered to have extreme dipole magnetic fields reaching ~1e+11 T. The magnetar 4U 0142+61, one of prototypes of this class, was st…
Spectral and Timing Nature of the Symbiotic X-ray Binary 4U 1954+319: The Slowest Rotating Neutron Star in an X-ray Binary System
Teruaki Enoto, Makoto Sasano, Shin'ya Yamada +7
The symbiotic X-ray binary 4U 1954+319 is a rare system hosting a peculiar neutron star (NS) and an M-type optical companion. Its ~5.4h NS spin period is the longest among all know…
Discriminating the Progenitor Type of Supernova Remnants with Iron K-Shell Emission
Hiroya Yamaguchi, Carles Badenes, Robert Petre +11
Supernova remnants (SNRs) retain crucial information about both their parent explosion and circumstellar material left behind by their progenitor. However, the complexity of the in…