54 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- High Energy Accelerator Research OrganizationJP66 papers
- The University of TokyoJP45 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP39 papers
- The Graduate University for Advanced Studies, SOKENDAIJP38 papers
- Lawrence Berkeley National LaboratoryUS18 papers
- University of California, BerkeleyUS17 papers
- Japan Aerospace Exploration AgencyJP16 papers
- Institute of Space and Astronautical ScienceJP15 papers
- Tohoku UniversityJP13 papers
- Cardiff UniversityGB12 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TriesteIT10 papers
9 papers · 1 filter
Decadal brightening in the northeastern non-thermal filament of Cassiopeia A
Nao Kominato, Toshiki Sato, Yusuke Sakai +2
We present the decadal brightening of non-thermal emission flux in the northeastern filament of the young supernova remnant Cassiopeia A (Cas A), which highlights dynamic processes…
Arcsecond-Scale X-ray Imaging and Spectroscopy of SS 433 with Chandra HETG
Yusuke Sakai, Shinya Yamada, Haruka Sakemi +5
We present a spatial and spectral analysis of arcsecond-scale X-ray emission in SS 433 using zeroth-order data from Chandra High-Energy Transmission Grating (HETG) observations. Th…
Polarized X-rays Correlated with Short--Timescale Variability of Cygnus X-1
Kaito Ninoyu, Yuusuke Uchida, Shinya Yamada +4
We systematically investigate the variability of polarized X-rays on a timescale of a few seconds in the low/hard state of the black hole binary Cygnus X-1. The correlation between…
Unlocking Discovery Potential for Decaying Dark Matter and Faint X-ray Sources with XRISM
Yu Zhou, Volodymyr Takhistov, Kazuhisa Mitsuda
Astrophysical emission lines arising from particle decays can offer unique insights into the nature of dark matter (DM). Using dedicated simulations with background and foreground…
Indications of an offset merger in Abell 3667
Y. Omiya, K. Nakazawa, T. Tamura +13
Abell 3667 is a nearby merging cluster with a prominent cold front and a pair of two bright radio relics. Assuming a head-on merger, the origin of the cold front is often considere…
Richardson-Lucy deconvolution with a spatially Variant point-spread function of Chandra: Supernova Remnant Cassiopeia A as an Example
Yusuke Sakai, Shinya Yamada, Toshiki Sato +3
Richardson-Lucy (RL) deconvolution is one of the classical methods widely used in X-ray astronomy and other areas. Amid recent progress in image processing, RL deconvolution still…
Simultaneous Millimeter-wave, Gamma-ray, and Optical Monitoring of the Blazar PKS 2326-502 During a Flaring State
J. C. Hood, A. Simpson, A. McDaniel +66
Including millimeter-wave (mm-wave) data in multi-wavelength studies of the variability of active galactic nuclei (AGN) can provide insights into AGN physics that are not easily ac…
Revisiting Tests of Lorentz Invariance with Gamma-ray Bursts: Effects of Intrinsic Lags
Valeri Vardanyan, Volodymyr Takhistov, Metin Ata +1
Due to their cosmological distances high-energy astrophysical sources allow for unprecedented tests of fundamental physics. Gamma-ray bursts (GRBs) comprise among the most sensitiv…
Impacts of Jets and Winds From Primordial Black Holes
Volodymyr Takhistov, Philip Lu, Kohta Murase +2
Primordial black holes (PBHs) formed in the early Universe constitute an attractive candidate for dark matter. Within the gaseous environment of the interstellar medium, PBHs with…