Japanese companies in the space industry, organised by business area. Listing is free.
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T-2h 47mGo
Long March 3B/E | Unknown Payload
Jul 23, 2026 12:00 UTC · Xichang Satellite Launch Center, People's Republic of China
T-13h 32mGo
Starship | Flight 13
Jul 23, 2026 22:45 UTC · SpaceX Starbase, TX, USA
T-14h 17mGo
Kinetica 1 | Unknown Payload
Jul 23, 2026 23:30 UTC · Jiuquan Satellite Launch Center, People's Republic of China
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Estimating Cluster Galaxy Infall Time from Phase Space in TNG
Using the TNG300 and TNG-Cluster simulations, phase space-based estimates for galaxy infall time onto clusters with $M_{\mathrm{h}} \geqslant 10^{14}~M_{\odot}$ are determined for all simulation snapshots with $z \leqslant 1$. These infall time estimates are consistent with previous work in the literature, and can be readily applied to observations of cluster galaxies, where no other estimate is feasible, based only on the galaxy's position in projected phase space. The analysis pipeline used to…
Spectral Data-cube Cleaning for CCAT Deep Spectroscopic Survey. I. Effect of correlated noise and filtering on the power spectrum
The Epoch of Reionization Spectrometer (EoR-Spec) on the Fred Young Submillimeter Telescope (FYST) will conduct the CCAT Deep Spectroscopic Survey (DSS) to perform line-intensity mapping of redshifted [C II] emission. Atmospheric $1/f$ noise and instrumental systematics affect power-spectrum recovery. We present realistic end-to-end simulations to quantify these effects and evaluate a Filter-and-Bin (F&B) pipeline. The simulated observations include instrument response, astrophysical emission, a…
Pulsar glitches in the presence of vortex traps
Pulsar glitches are thought to originate when angular momentum is transferred to the crust of the neutron star from the superfluid enclosed within, mediated by vortex avalanches. This idea has been qualitatively validated in the existing literature by simulating a star with a small number ($\sim 10^{3}$) of superfluid vortices, subject to deceleration and uniform pinning. Here, we employ the Barnes-Hut approximation to simulate up to $10^{5}$ vortices in a reasonable time. Using the new setup, w…