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The three-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
Strauss, Michael A.; Takita, Satoshi; Miyatake, Hironao +15 more
We present the galaxy shear catalog that will be used for the three-year cosmological weak gravitational lensing analyses using data from the Wide layer of the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) Survey. The galaxy shapes are measured from the i-band imaging data acquired from 2014 to 2019 and calibrated with image simulations t…
HSC-XXL: Baryon budget of the 136 XXL groups and clusters
Oguri, Masamune; Valtchanov, Ivan; Umetsu, Keiichi +17 more
We present our determination of the baryon budget for an X-ray-selected XXL sample of 136 galaxy groups and clusters spanning nearly two orders of magnitude in mass (M500 ~ 1013-1015 M⊙) and the redshift range 0 ≲ z ≲ 1. Our joint analysis is based on the combination of Hyper Suprime-Cam Subaru Strategic…
High-resolution X-ray study of supernova remnant J0453.6-6829 with unusually high forbidden-to-resonance ratio
Uchida, Hiroyuki; Tsuru, Takeshi Go; Tanaka, Takaaki +3 more
Recent high-resolution X-ray spectroscopy has revealed that several supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) show unusually high forbidden-to-resonance (f/r) line ratios. While their origin is still uncertain and debated, most of these SNRs have asymmetric morphology and/or show evidence of interaction with dense material, whi…
Relationship between gamma-ray loudness and X-ray spectra of radio galaxies
Fukazawa, Yasushi; Kayanoki, Taishu
The Fermi satellite has detected ~ 60 radio galaxies (RGs). In this study, we investigate the difference in the properties of X-ray spectra between GeV-loud RGs and GeV-quiet RGs. Our sample comprises 68 objects: 36 RGs detected with Fermi and 32 RGs not detected with gamma-rays. We analyzed the X-ray spectra of these 68 objects using data from th…
NuSTAR discovery of the hard X-ray emission and a wide-band X-ray spectrum from the Pictor A western hotspot
Katsuda, Satoru; Sato, Kosuke; Tashiro, Makoto S. +5 more
Utilizing Chandra, XMM-Newton, and NuSTAR, a wide-band X-ray spectrum from 0.2 to 20 keV is reported from the western hotspot of Pictor A. In particular, the X-ray emission is significantly detected in the 3 to 20 keV band at 30σ by NuSTAR. This is the first detection of hard X-rays with energies above 10 keV from a jet termination hotspot of acti…
Do blue galaxy-clusters have hot intracluster gas?
Oguri, Masamune; Kodama, Tadayuki; Okabe, Nobuhiro +5 more
We present herein a systematic X-ray analysis of blue galaxy clusters at z = 0.84 discovered by the Subaru telescope. The sample consisted of 43 clusters identified by combining red-sequence and blue-cloud surveys, covering a wide range of emitter fractions (i.e., 0.3-0.8). The spatial extent of the over-density region of emitter galaxies was appr…
X-ray hot spots in the eastern ear of the supernova remnant W 50 and the microquasar SS 433 system
Katsuda, Satoru; Sato, Toshiki; Uchiyama, Hideki +10 more
We examined the X-ray and radio spatial structure at the eastern ear of the W 50/SS 433 system to clarify a characteristic feature of the termination region of the SS 433 jet, and found that a hot spot ahead of the filament structure, which is considered to be a terminal shock of the SS 433 eastern jet, is clearly different from a single point sou…