Nano-JASMINE: cosmic radiation degradation of CCD performance and centroid detection

Kobayashi, Yukiyasu; Shimura, Yuki; Niwa, Yasumasa; Yano, Takeru; Gouda, Naoteru; Yamada, Yoshiyuki

doi:10.1117/12.924870

Cited by 3 publications

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“…In order to assist in obtaining more reliable results from NJ data analysis, we performed detailed measurements of the PRF for an HPK FDCCD. These experiments are the continuation of work reported by Kobayashi et al (2012). 3…”

Section: Introductionsupporting

confidence: 69%

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Measurement of pixel response functions of a fully depleted CCD

et al. 2014

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We describe the measurement of detailed and precise Pixel Response Functions (PRFs) of a fully depleted CCD. Measurements were performed under different physical conditions, such as different wavelength light sources or CCD operating temperatures. We determined the relations between these physical conditions and the forms of the PRF. We employ two types of PRFs: one is the model PRF (mPRF) that can represent the shape of a PRF with one characteristic parameter and the other is the simulated PRF (sPRF) that is the resultant PRF from simulating physical phenomena. By using measured, model, and simulated PRFs, we determined the relations between operational parameters and the PRFs. Using the obtained relations, we can now estimate a PRF under conditions that will be encountered during the course of Nano-JASMINE observations. These estimated PRFs will be utilized in the analysis of the Nano-JASMINE data.

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Section: Introductionsupporting

confidence: 69%

“…3 All the components can be installed in a vacuum chamber, which avoids errors due to air turbulence. We prepared two micro-sized light sources; one has a 0.65 μm LED and the other a 0.85 μm LED.…”

Section: Measurement Systemmentioning

confidence: 99%

Measurement of pixel response functions of a fully depleted CCD

et al. 2014

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Division a Commission 8: Astrometry

Zacharias¹,

Evans²,

Chen³

et al. 2015

Proc. IAU

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Commission 8 has regularly published triennial reports in the past and the current OC therefore voted to adopt a traditional format also for this special Legacy issue of the IAU Transactions. The outgoing President is grateful for the support of many Commission members who contributed to this report. Our contribution consists of 3 parts: 1) this introduction, providing a general overview and highlights of recent research in astrometry, 2) a summary of the astrometry business & science meeting at the 2015 IAU General Assembly, and 3) the activity report of our Commisson covering the mid-2012 to mid-2015 period.

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Hunting Gravitational Wave Black Holes with Microlensing

Abrams

Takada

2020

ApJ

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Gravitational microlensing is a powerful tool to search for a population of invisible black holes (BHs) in the Milky Way (MW), including isolated BHs and binary BHs at wide orbits that are complementary to gravitational wave observations. By monitoring highly populated regions of source stars like the MW bulge region, one can pursue microlensing events due to these BHs. We find that if BHs have a Salpeter-like mass function extended beyond 30M ⊙ and a similar velocity and spatial structure to stars in the Galactic bulge and disk regions, the BH population is a dominant source of microlensing events at long timescales of the microlensing light curve ≳100 days. This is due to a boosted sensitivity of the microlensing event rate to lens mass, given as M 2, for such long-timescale events. A monitoring observation of 2 × 1010 stars in the bulge region over 10 yr with the Rubin Observatory Legacy Survey of Space and Time (LSST) would enable one to find about 6 × 105 BH microlensing events. We evaluate the efficiency of potential LSST cadences for characterizing the light curves of BH microlensing and find that nearly all events of long timescales can be detected.

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Nano-JASMINE: cosmic radiation degradation of CCD performance and centroid detection

Cited by 3 publications

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Measurement of pixel response functions of a fully depleted CCD

Measurement of pixel response functions of a fully depleted CCD

Division a Commission 8: Astrometry

Hunting Gravitational Wave Black Holes with Microlensing

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