286 results on '"Manabu Ishida"'
Search Results
2. Deep learning‐based identification of sinoatrial node‐like pacemaker cells from SHOX2/HCN4 double‐positive cells differentiated from human iPS cells
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Takayuki Wakimizu, Junpei Naito, Manabu Ishida, Yasutaka Kurata, Motokazu Tsuneto, Yasuaki Shirayoshi, and Ichiro Hisatome
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automaticity ,CNN model ,deep learning ,human iPS cells ,SAN‐like cells ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Cardiomyocytes derived from human iPS cells (hiPSCs) include cells showing SAN‐ and non‐SAN‐type spontaneous APs. Objectives To examine whether the deep learning technology could identify hiPSC‐derived SAN‐like cells showing SAN‐type‐APs by their shape. Methods We acquired phase‐contrast images for hiPSC‐derived SHOX2/HCN4 double‐positive SAN‐like and non‐SAN‐like cells and made a VGG16‐based CNN model to classify an input image as SAN‐like or non‐SAN‐like cell, compared to human discriminability. Results All parameter values such as accuracy, recall, specificity, and precision obtained from the trained CNN model were higher than those of human classification. Conclusions Deep learning technology could identify hiPSC‐derived SAN‐like cells with considerable accuracy.
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- 2023
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3. Impact of Cough Severity on the Diagnostic Yield of Endobronchial Ultrasonography Transbronchial Biopsy with Guide Sheath: A Retrospective Observational Study
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Fumi Kobayashi, Takeshi Saraya, Takatora Akizawa, Taro Abe, Ryo Takagi, Eriko Ieki, Narishige Ishikawa, Nozomi Kurokawa, Jumpei Aso, Hiroki Nunokawa, Yasuo Nakamoto, Manabu Ishida, Mitsuru Sada, Keitaro Nakamoto, Saori Takata, and Haruyuki Ishii
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bronchoscopy ,EBUS-GS-TBB ,cough ,Medicine - Abstract
Bronchoscopy is an invasive procedure, and patient coughing during examination has been reported to cause patient distress. This study aimed to clarify the relationship between cough severity and diagnostic yield of endobronchial ultrasonography with guide sheath transbronchial biopsy (EBUS-GS-TBB). Data of patients who underwent bronchoscopy at Kyorin University Hospital between April 2019 and March 2022 were retrospectively evaluated. Bronchoscopists assessed the cough severity upon completion of the procedure using a four-point cough scale. Cough severity was included as a predictive factor along with those reportedly involved in bronchoscopic diagnosis, and their impact on diagnostic yield was evaluated. Predictors of cough severity were also examined. A total of 275 patients were enrolled in this study. In the multivariate analysis, the diagnostic group (n = 213) had significantly more ‘within’ radial endobronchial ultrasound findings (odds ratio [OR] 5.900, p < 0.001), a lower cough score (cough score per point; OR 0.455, p < 0.001), and fewer bronchial generations to target lesion(s) (OR 0.686, p < 0.001) than the non-diagnostic group (n = 62). The predictive factors for severe cough include the absence of virtual bronchoscopic navigation (VBN) and prolonged examination time. Decreased cough severity was a positive predictive factor for successful EBUS-GS-TBB, which may be controlled using VBN and awareness of the procedural duration.
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- 2024
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4. Relations of motor cortical plasticity evaluated by NBS with Alzheimer’s disease biomarkers
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Takenobu Murakami, Manabu Ishida, Ritsuko Hanajima, and Yoshikazu Ugawa
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Published
- 2023
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5. Genetic determinants of risk in autoimmune pulmonary alveolar proteinosis
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Saori Sakaue, Etsuro Yamaguchi, Yoshikazu Inoue, Meiko Takahashi, Jun Hirata, Ken Suzuki, Satoru Ito, Toru Arai, Masaki Hirose, Yoshinori Tanino, Takefumi Nikaido, Toshio Ichiwata, Shinya Ohkouchi, Taizou Hirano, Toshinori Takada, Satoru Miyawaki, Shogo Dofuku, Yuichi Maeda, Takuro Nii, Toshihiro Kishikawa, Kotaro Ogawa, Tatsuo Masuda, Kenichi Yamamoto, Kyuto Sonehara, Ryushi Tazawa, Konosuke Morimoto, Masahiro Takaki, Satoshi Konno, Masaru Suzuki, Keisuke Tomii, Atsushi Nakagawa, Tomohiro Handa, Kiminobu Tanizawa, Haruyuki Ishii, Manabu Ishida, Toshiyuki Kato, Naoya Takeda, Koshi Yokomura, Takashi Matsui, Masaki Watanabe, Hiromasa Inoue, Kazuyoshi Imaizumi, Yasuhiro Goto, Hiroshi Kida, Tomoyuki Fujisawa, Takafumi Suda, Takashi Yamada, Yasuomi Satake, Hidenori Ibata, Nobuyuki Hizawa, Hideki Mochizuki, Atsushi Kumanogoh, Fumihiko Matsuda, Koh Nakata, Tomomitsu Hirota, Mayumi Tamari, and Yukinori Okada
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Science - Abstract
Autoimmune pulmonary alveolar proteinosis (aPAP) is a complex lung disease caused by abnormal surfactant homeostasis. Here, the authors carry out a genome-wide association study of aPAP in a Japanese cohort, finding variants in the MHC and suggesting predisposition to abnormal antibody production.
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- 2021
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6. Gravitational Redshift Detection from the Magnetic White Dwarf Harbored in RX J1712.6–2414
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Takayuki Hayashi, Hideyuki Mori, Koji Mukai, Yukikatsu Terada, and Manabu Ishida
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White dwarf stars ,X-ray binary stars ,X-ray point sources ,Cataclysmic variable stars ,DQ Herculis stars ,Stellar accretion ,Astrophysics ,QB460-466 - Abstract
Gravitational redshift is a fundamental parameter that allows us to determine the mass-to-radius ratio of compact stellar objects, such as black holes, neutron stars, and white dwarfs (WDs). In the X-ray spectra of the close binary system, RX J1712.6−2414, obtained from the Chandra High Energy Transmission Grating observation, we detected significant redshifts for characteristic X-rays emitted from hydrogen-like magnesium, silicon (Δ E / E _rest ∼ 7 × 10 ^−4 ), and sulfur (Δ E / E _rest ∼ 15 × 10 ^−4 ) ions, which are over the instrumental absolute energy accuracy (Δ E / E _rest ∼ 3.3 × 10 ^−4 ). Considering some possible factors, such as Doppler shifts associated with the plasma flow, systemic velocity, and optical depth, we concluded that the major contributor to the observed redshift is the gravitational redshift of the WD harbored in the binary system, which is the first gravitational redshift detection from a magnetic WD. Moreover, the gravitational redshift provides us with a new method of WD mass measurement by invoking the plasma-flow theory with strong magnetic fields in close binaries. Regardless of large uncertainty, our new method estimated the WD mass to be M _WD > 0.9 M _⊙ .
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- 2023
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7. Machine Learning for Diagnosis of AD and Prediction of MCI Progression From Brain MRI Using Brain Anatomical Analysis Using Diffeomorphic Deformation
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Ali Haidar Syaifullah, Akihiko Shiino, Hitoshi Kitahara, Ryuta Ito, Manabu Ishida, and Kenji Tanigaki
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artificial inteligence ,cognitive impairment ,Alzheheimer's disease ,machine learning ,support vector machine ,magnetic resonance imaging ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Background: With the growing momentum for the adoption of machine learning (ML) in medical field, it is likely that reliance on ML for imaging will become routine over the next few years. We have developed a software named BAAD, which uses ML algorithms for the diagnosis of Alzheimer's disease (AD) and prediction of mild cognitive impairment (MCI) progression.Methods: We constructed an algorithm by combining a support vector machine (SVM) to classify and a voxel-based morphometry (VBM) to reduce concerned variables. We grouped progressive MCI and AD as an AD spectrum and trained SVM according to this classification. We randomly selected half from the total 1,314 subjects of AD neuroimaging Initiative (ADNI) from North America for SVM training, and the remaining half were used for validation to fine-tune the model hyperparameters. We created two types of SVMs, one based solely on the brain structure (SVMst), and the other based on both the brain structure and Mini-Mental State Examination score (SVMcog). We compared the model performance with two expert neuroradiologists, and further evaluated it in test datasets involving 519, 592, 69, and 128 subjects from the Australian Imaging, Biomarker & Lifestyle Flagship Study of Aging (AIBL), Japanese ADNI, the Minimal Interval Resonance Imaging in AD (MIDIAD) and the Open Access Series of Imaging Studies (OASIS), respectively.Results: BAAD's SVMs outperformed radiologists for AD diagnosis in a structural magnetic resonance imaging review. The accuracy of the two radiologists was 57.5 and 70.0%, respectively, whereas, that of the SVMst was 90.5%. The diagnostic accuracy of the SVMst and SVMcog in the test datasets ranged from 88.0 to 97.1% and 92.5 to 100%, respectively. The prediction accuracy for MCI progression was 83.0% in SVMst and 85.0% in SVMcog. In the AD spectrum classified by SVMst, 87.1% of the subjects were Aβ positive according to an AV-45 positron emission tomography. Similarly, among MCI patients classified for the AD spectrum, 89.5% of the subjects progressed to AD.Conclusion: Our ML has shown high performance in AD diagnosis and prediction of MCI progression. It outperformed expert radiologists, and is expected to provide support in clinical practice.
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- 2021
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8. Machine learning of brain structural biomarkers for Alzheimer's disease (AD) diagnosis, prediction of disease progression, and amyloid beta deposition in the Japanese population
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Akihiko Shiino, Yoshitomo Shirakashi, Manabu Ishida, Kenji Tanigaki, and Japanese Alzheimer's Disease Neuroimaging Initiative
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ADNI ,Alzheimer's disease ,artificial intelligence ,machine learning ,MRI ,Neurology. Diseases of the nervous system ,RC346-429 ,Geriatrics ,RC952-954.6 - Abstract
Abstract Introduction We developed machine learning (ML) designed to analyze structural brain magnetic resonance imaging (MRI), and trained it on the Alzheimer's Disease Neuroimaging Initiative (ADNI) database. In this study, we verified its utility in the Japanese population. Methods A total of 535 participants were enrolled from the Japanese ADNI database, including 148 AD, 152 normal, and 235 mild cognitive impairment (MCI). Probability of AD was expressed as AD likelihood scores (ADLS). Results The accuracy of AD diagnosis was 88.0% to 91.2%. The accuracy of predicting the disease progression in non‐dementia participants over a 3‐year observation was 76.0% to 79.3%. More than 90% of the participants with low ADLS did not progress to AD within 3 years. In the amyloid positron emission tomography (PET)–positive MCI, the hazard ratio of progression was 2.39 with low ADLS, and 5.77 with high ADLS. When high ADLS was defined as N+ and Pittsburgh compound B (PiB) PET positivity was defined as A+, the time to disease progression for 50% of MCI participants was 23.7 months in A+N+, whereas it was 52.3 months in A+N‐. Conclusion These results support the feasibility of our ML for the diagnosis of AD and prediction of the disease progression.
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- 2021
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9. Does maternal autoantibody that transfer to newborn cause disease?
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Toshio Ichiwata, Manabu Ishida, Yuko Itoh, Nobutaka Kitamura, and Koh Nakata
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Autoimmune pulmonary alveolar proteinosis ,granulocyte‐macrophage colony‐stimulating factor autoantibody ,pregnancy ,childbirth ,Diseases of the respiratory system ,RC705-779 - Abstract
Autoimmune pulmonary alveolar proteinosis (aPAP) is associated with excess amount of granulocyte‐macrophage colony‐stimulating factor (GM‐CSF) autoantibody (GMAb) in the lung and blood. We experienced a female case with severe aPAP who could continue her pregnancy under home oxygen therapy and delivered a newborn by caesarean section. Maternal serum GMAb remained high level for up to one year after the delivery, although aPAP entered remission by whole lung lavage. While the newborn oxygen saturation as well as serum Krebs von den Lungen‐6 and surfactant protein‐D levels had been normal until one year. As GMAb likely transfer to the newborn and might cause the same disease, we carefully monitored both maternal and the newborn serum GMAb levels after the birth for up to one year. We confirmed that GMAb passively transferred to the newborn circulation but rapidly decreased exponentially to the cut‐off level. It is suggested that this rapid decrease might prevent the newborn from developing aPAP.
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- 2019
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10. Application of a new X-ray reflection model to V1223 Sagittarii
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Takayuki Hayashi, Takao Kitaguchi, and Manabu Ishida
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- 2021
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11. Spatial distribution of the X-ray-emitting plasma of U Geminorum in quiescence and outburst
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Mai Takeo, Takayuki Hayashi, Manabu Ishida, Nozomi Nakaniwa, and Yoshitomo Maeda
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Astronomy ,Astrophysics - Abstract
We present our analysis of the Suzaku data of U Geminorum (U Gem) from 2012 both in quiescence and outburst. Unlike SS Cygni (SS Cyg), the hard X-ray flux of U Gem is known to increase at times of optical outburst. A sophisticated spectral model and reliable distance estimate now reveal that this can be attributed to the fact that the mass accretion rate onto the white dwarf (WD) does not exceed the critical rate that causes the optically thin to thick transition of the boundary layer. From comparison of the X-ray and optical light curves, the X-ray outburst peak seems to be retarded by 2.1 ± 0.5 d, although there remains uncertainty in the X-ray peak identification, due to short data coverage. The larger delay than SS Cyg (0.9–1.4 d) also supports the lower accretion rate in U Gem. A fluorescent iron 6.4 keV emission line bears significant information about the geometry of the X-ray-emitting hot plasma and the accretion disk (AD) that reflects the hard X-ray emission. Our reflection simulation has shown that the optically thick AD is truncated at a distance of 1.20–1.25 times the white dwarf radius (RWD) in quiescence, and the accreting matter in the disk turns into the optically thin hard-X-ray-emitting plasma at this radius. In outburst, on the other hand, our spectral analysis favors the picture that the optically thick disk reaches the WD surface, although disk truncation can take place in the region of <1.012 RWD. From the profile of the 6.4 keV line, we have also discovered that the accreting matter is heated up close to the maximum temperature immediately after the matter enters the boundary layer at the disk truncation radius. This is consistent with the fact that the hard X-ray spectra of dwarf novae, in general, can be well represented with the cooling flow model.
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- 2020
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12. Detection of polarized gamma-ray emission from the Crab nebula with the Hitomi Soft Gamma-ray Detector
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Felix Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steven W Allen, Lorella Angelini, Marc Audard, Hisamitsu Awaki, Magnus Axelsson, Aya Bamba, Marshall W Bautz, Roger Blandford, Laura W Brenneman, Gregory V Brown, Esra Bulbul, Edward M Cackett, Maria Chernyakova, Meng P Chiao, Paolo S Coppi, Elisa Costantini, Jelle de Plaa, Cor P de Vries, Jan-Willem den Herder, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew C Fabian, Carlo Ferrigno, Adam R Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi C Gallo, Poshak Gandhi, Margherita Giustini, Andrea Goldwurm, Liyi Gu, Matteo Guainazzi, Yoshito Haba, Kouichi Hagino, Kenji Hamaguchi, Ilana M Harrus, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Kiyoshi Hayashida, Junko S Hiraga, Ann Hornschemeier, Akio Hoshino, John P Hughes, Yuto Ichinohe, Ryo Iizuka, Hajime Inoue, Yoshiyuki Inoue, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Masachika Iwai, Jelle Kaastra, Tim Kallman, Tsuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Nobuyuki Kawai, Richard L Kelley, Caroline A Kilbourne, Takao Kitaguchi, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Katsuji Koyama, Shu Koyama, Peter Kretschmar, Hans A Krimm, Aya Kubota, Hideyo Kunieda, Philippe Laurent, Shiu-Hang Lee, Maurice A Leutenegger, Olivier Limousin, Michael Loewenstein, Knox S Long, David Lumb, Greg Madejski, Yoshitomo Maeda, Daniel Maier, Kazuo Makishima, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian R McNamara, Missagh Mehdipour, Eric D Miller, Jon M Miller, Shin Mineshige, Kazuhisa Mitsuda, Ikuyuki Mitsuishi, Takuya Miyazawa, Tsunefumi Mizuno, Hideyuki Mori, Koji Mori, Koji Mukai, Hiroshi Murakami, Richard F Mushotzky, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Shinya Nakashima, Kazuhiro Nakazawa, Kumiko K Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Hirokazu Odaka, Takaya Ohashi, Masanori Ohno, Takashi Okajima, Naomi Ota, Masanobu Ozaki, Frits Paerels, Stéphane Paltani, Robert Petre, Ciro Pinto, Frederick S Porter, Katja Pottschmidt, Christopher S Reynolds, Samar Safi-Harb, Shinya Saito, Kazuhiro Sakai, Toru Sasaki, Goro Sato, Kosuke Sato, Rie Sato, Makoto Sawada, Norbert Schartel, Peter J Serlemtsos, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall K Smith, Yang Soong, Łukasz Stawarz, Yasuharu Sugawara, Satoshi Sugita, Andrew Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Tadayuki Takahashi, Shin’ichiro Takeda, Yoh Takei, Toru Tamagawa, Takayuki Tamura, Takaaki Tanaka, Yasuo Tanaka, Yasuyuki T Tanaka, Makoto S Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Go Tsuru, Hiroyuki Uchida, Hideki Uchiyama, Yasunobu Uchiyama, Shutaro Ueda, Yoshihiro Ueda, Shin’ichiro Uno, C Megan Urry, Eugenio Ursino, Shin Watanabe, Norbert Werner, Dan R Wilkins, Brian J Williams, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Y Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Yoichi Yatsu, Daisuke Yonetoku, Irina Zhuravleva, Abderahmen Zoghbi, and Yuusuke Uchida
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- 2018
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13. Spatial distribution of the X-ray-emitting plasma of SS Cygni in quiescence and outburst
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Manabu Ishida, Takayuki Hayashi, Yoshitomo Maeda, Mai Takeo, and Nozomi Nakaniwa
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Physics ,Space and Planetary Science ,X-ray ,Astronomy and Astrophysics ,Plasma ,Astrophysics ,SS Cygni ,Spatial distribution - Abstract
We present our analysis of the Suzaku data of SS Cygni (SS Cyg) from 2005 both in quiescence and outburst. A fluorescent iron Kα line bears significant information about the geometry of an X-ray-emitting hot plasma and a cold reflector, such as the surfaces of the white dwarf (WD) and the accretion disk (AD). Our reflection simulation has revealed that the X-ray-emitting hot plasma is located either very close to the WD surface in the boundary layer (BL), with an upper limit radial position of
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- 2021
14. Successful Treatment of Mepolizumab- and Prednisolone-resistant Allergic Bronchopulmonary Aspergillosis with Dupilumab
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Keitaro Nakamoto, Sunao Mikura, Masachika Fujiwara, Hiroaki Shimoyamada, Takeshi Saraya, Haruyuki Ishii, Kojiro Honda, Manabu Ishida, Yuki Yoshida, Miku Oda, Saori Takata, and Masaki Tamura
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Male ,medicine.medical_specialty ,Antifungal Agents ,Itraconazole ,Prednisolone ,Case Report ,030204 cardiovascular system & hematology ,Antibodies, Monoclonal, Humanized ,Gastroenterology ,03 medical and health sciences ,Subcutaneous injection ,0302 clinical medicine ,Refractory ,dupilumab ,Internal medicine ,allergic bronchopulmonary aspergillosis ,Internal Medicine ,medicine ,Humans ,Maintenance dose ,business.industry ,Aspergillosis, Allergic Bronchopulmonary ,mepolizumab ,General Medicine ,Middle Aged ,medicine.disease ,Dupilumab ,030211 gastroenterology & hepatology ,Allergic bronchopulmonary aspergillosis ,business ,Mepolizumab ,medicine.drug - Abstract
A 45-year-old man with allergic bronchopulmonary aspergillosis (ABPA) was treated with oral prednisolone (PSL) (30 mg/day), inhaled corticosteroids, and long-acting beta2-agonists. After confirmation of a PSL-dependent status (8 mg/day), subcutaneous injection with anti-interleukin (IL)-5 antibody (mepolizumab, 100 mg/month) was performed, and the PSL dose was tapered to 5 mg/day. However, ABPA recurred and proved refractory to oral itraconazole (200 mg/day). Alternative subcutaneous injection therapy with dupilumab (induction dose of 600 mg followed by a maintenance dose of 300 mg/2 weeks) enabled the successful withdrawal of oral PSL without clinical deterioration. This case demonstrates the potential utility of dupilumab for steroid-dependent ABPA via the synergistic suppression of IL-4 and IL-13 compared to monotherapy with anti-IL-5 antibody.
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- 2021
15. Super DIOS for exploring dark baryon
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Kosuke Sato, Noriko Y. Yamasaki, Shinya Yamada, Ikuyuki Mitsuishi, Yuto Ichinohe, Hajime Omamiuda, Yuusuke Uchida, Kazuhisa Mitsuda, Daisuke Nagai, Kohji Yoshikawa, Ken Osato, Kyoko Matsushita, Yutaka Fujita, Yoshitaka Ishisaki, Yuichiro Ezoe, Manabu Ishida, Yoshitomo Maeda, Nobuyuki Kawai, Ryuichi Fujimoto, Takeshi G. Tsuru, Naomi Ota, and Yuki Nakashima
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- 2022
16. Status of resolve instrument onboard x-ray imaging and spectroscopy mission (XRISM)
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Yoshitaka Ishisaki, Richard L. Kelley, Hisamitsu Awaki, Jesus C. Balleza, Kim R. Barnstable, Thomas G. Bialas, Rozenn Boissay-Malaquin, Gregory V. Brown, Edgar R. Canavan, Renata S. Cumbee, Timothy M. Carnahan, Meng P. Chiao, Brian J. Comber, Elisa Costantini, Jan-Willem A. den Herder, Johannes Dercksen, Cor P. de Vries, Michael J. DiPirro, Megan E. Eckart, Yuichiro Ezoe, Carlo Ferrigno, Ryuichi Fujimoto, Nathalie Gorter, Steven M. Graham, Martin Grim, Leslie S. Hartz, Ryota Hayakawa, Takayuki Hayashi, Natalie Hell, Akio Hoshino, Yuto Ichinohe, Manabu Ishida, Kumi Ishikawa, Bryan L. James, Steven J. Kenyon, Caroline A. Kilbourne, Mark O. Kimball, Shunji Kitamoto, Maurice A. Leutenegger, Yoshitomo Maeda, Dan McCammon, Joseph J. Miko, Misaki Mizumoto, Takashi Okajima, Atsushi Okamoto, Stephane Paltani, Frederick S. Porter, Kosuke Sato, Toshiki Sato, Makoto Sawada, Keisuke Shinozaki, Russell Shipman, Peter J. Shirron, Gary A. Sneiderman, Yang Soong, Richard Szymkiewicz, Andrew E. Szymkowiak, Yoh Takei, Keisuke Tamura, Masahiro Tsujimoto, Yuusuke Uchida, Stephen Wasserzug, Michael C. Witthoeft, Rob Wolfs, Shinya Yamada, and Susumu Yasuda
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- 2022
17. A broadband x-ray imaging spectroscopy in the 2030s: the FORCE mission
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Koji Mori, Takeshi G. Tsuru, Kazuhiro Nakazawa, Yoshihiro Ueda, Shin Watanabe, Takaaki Tanaka, Manabu Ishida, Hironori Matsumoto, Hisamitsu Awaki, Hiroshi Murakami, Masayoshi Nobukawa, Ayaki Takeda, Yasushi Fukazawa, Hiroshi Tsunemi, Tadayuki Takahashi, Ann E. Hornschemeier, Takashi Okajima, William W. Zhang, Brian J. Williams, Tonia Venters, Kristin Madsen, Mihoko Yukita, Hiroki Akamatsu, Aya Bamba, Teruaki Enoto, Yutaka Fujita, Akihiro Furuzawa, Kouichi Hagino, Kosei Ishimura, Masayuki Itoh, Tetsu Kitayama, Shogo B. Kobayashi, Takayoshi Kohmura, Aya Kubota, Misaki Mizumoto, Tsunefumi Mizuno, Hiroshi Nakajima, Kumiko K. Nobukawa, Hirofumi Noda, Hirokazu Odaka, Naomi Ota, Toshiki Sato, Megumi Shidatsu, Hiromasa Suzuki, Hiromitsu Takahashi, Atsushi Tanimoto, Yukikatsu Terada, Yuichi Terashima, Hiroyuki Uchida, Yasunobu Uchiyama, Hiroya Yamaguchi, and Yoichi Yatsu
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High Energy Astrophysical Phenomena (astro-ph.HE) ,FOS: Physical sciences ,Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Instrumentation and Methods for Astrophysics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) - Abstract
In this multi-messenger astronomy era, all the observational probes are improving their sensitivities and overall performance. The Focusing on Relativistic universe and Cosmic Evolution (FORCE) mission, the product of a JAXA/NASA collaboration, will reach a 10 times higher sensitivity in the hard X-ray band ($E >$ 10~keV) in comparison with any previous hard X-ray missions, and provide simultaneous soft X-ray coverage. FORCE aims to be launched in the early 2030s, providing a perfect hard X-ray complement to the ESA flagship mission Athena. FORCE will be the most powerful X-ray probe for discovering obscured/hidden black holes and studying high energy particle acceleration in our Universe and will address how relativistic processes in the universe are realized and how these affect cosmic evolution. FORCE, which will operate over 1--79 keV, is equipped with two identical pairs of supermirrors and wideband X-ray imagers. The mirror and imager are connected by a high mechanical stiffness extensible optical bench with alignment monitor systems with a focal length of 12~m. A light-weight silicon mirror with multi-layer coating realizes a high angular resolution of $, 12 pages, 8 figures. Proceedings of SPIE Astronomical Telescopes and Instrumentation 2022
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- 2022
18. Optical performance of the x-ray telescope for the XL-Calibur experiment
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Wataru Kamogawa, Hironori Matsumoto, Quin Abarr, Hisamitsu Awaki, Richard Bose, Dana Braun, Gianluigi de Geronimo, Paul Dowkontt, Teruaki Enoto, Manel Errando, Yasushi Fukazawa, Akihiro Furuzawa, Thomas Gadson, Ephraim Gau, Victor Guarino, Shuichi Gunji, Keon Harmon, Kiyoshi Hayashida, Scott Heatwole, Fumiya Imazato, Kazunori Ishibashi, Manabu Ishida, Nirmal Iyer, Fabian Kislat, Mózsi Kiss, Takao Kitaguchi, Henric Krawczynski, James Lanzi, Lindsey Lisalda, Yoshitomo Maeda, Hiroto Matake, Taisei Mineta, Takuya Miyazawa, Tsunefumi Mizuno, Takashi Okajima, Mark Pearce, Zachary Peterson, Brian Rauch, Nicole Cavero, Felix Ryde, Theodor-Adrian Stana, David Stuchlik, Garry Simburger, Sean Spooner, Hiromitsu Takahashi, Tomoshi Takeda, Mai Takeo, Toru Tamagawa, Hiroshi Tsunemi, Nagomi Uchida, Yuusuke Uchida, Keisuke Uchiyama, Andrew West, Eric Wulf, and Yuto Yoshida
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- 2022
19. Current status of development of lightweight x-ray mirror with carbon fiber reinforced plastic (CFRP)
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Hisamitsu Awaki, Norika Kametani, Ryuta Imamura, Manabu Ishida, Masahiro Iwasaki, Kenshin Kodani, Yoshitomo Maeda, Hironori Matsumoto, Koji Mori, Kazuhiro Nakazawa, Tsuyoshi Ozaki, Hirofumi Suzuki, Hiromitsu Takahashi, Takeshi Tsuru, and Shin Utsunomiya
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- 2022
20. Atomic data and spectral modeling constraints from high-resolution X-ray observations of the Perseus cluster with Hitomi
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Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steven W Allen, Lorella Angelini, Marc Audard, Hisamitsu Awaki, Magnus Axelsson, Aya Bamba, Marshall W Bautz, Roger Blandford, Laura W Brenneman, Gregory V Brown, Esra Bulbul, Edward M Cackett, Maria Chernyakova, Meng P Chiao, Paolo S Coppi, Elisa Costantini, Jelle de Plaa, Cor P de Vries, Jan-Willem den Herder, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew C Fabian, Carlo Ferrigno, Adam R Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi C Gallo, Poshak Gandhi, Margherita Giustini, Andrea Goldwurm, Liyi Gu, Matteo Guainazzi, Yoshito Haba, Kouichi Hagino, Kenji Hamaguchi, Ilana M Harrus, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Kiyoshi Hayashida, Natalie Hell, Junko S Hiraga, Ann Hornschemeier, Akio Hoshino, John P Hughes, Yuto Ichinohe, Ryo Iizuka, Hajime Inoue, Yoshiyuki Inoue, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Masachika Iwai, Jelle Kaastra, Tim Kallman, Tsuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Nobuyuki Kawai, Richard L Kelley, Caroline A Kilbourne, Takao Kitaguchi, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Katsuji Koyama, Shu Koyama, Peter Kretschmar, Hans A Krimm, Aya Kubota, Hideyo Kunieda, Philippe Laurent, Shiu-Hang Lee, Maurice A Leutenegger, Olivier Limousin, Michael Loewenstein, Knox S Long, David Lumb, Greg Madejski, Yoshitomo Maeda, Daniel Maier, Kazuo Makishima, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian R McNamara, Missagh Mehdipour, Eric D Miller, Jon M Miller, Shin Mineshige, Kazuhisa Mitsuda, Ikuyuki Mitsuishi, Takuya Miyazawa, Tsunefumi Mizuno, Hideyuki Mori, Koji Mori, Koji Mukai, Hiroshi Murakami, Richard F Mushotzky, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Shinya Nakashima, Kazuhiro Nakazawa, Kumiko K Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Hirokazu Odaka, Takaya Ohashi, Masanori Ohno, Takashi Okajima, Naomi Ota, Masanobu Ozaki, Frits Paerels, Stéphane Paltani, Robert Petre, Ciro Pinto, Frederick S Porter, Katja Pottschmidt, Christopher S Reynolds, Samar Safi-Harb, Shinya Saito, Kazuhiro Sakai, Toru Sasaki, Goro Sato, Kosuke Sato, Rie Sato, Makoto Sawada, Norbert Schartel, Peter J Serlemtsos, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall K Smith, Yang Soong, Łukasz Stawarz, Yasuharu Sugawara, Satoshi Sugita, Andrew Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Tadayuki Takahashi, Shin’ichiro Takeda, Yoh Takei, Toru Tamagawa, Takayuki Tamura, Takaaki Tanaka, Yasuo Tanaka, Yasuyuki T Tanaka, Makoto S Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Go Tsuru, Hiroyuki Uchida, Hideki Uchiyama, Yasunobu Uchiyama, Shutaro Ueda, Yoshihiro Ueda, Shin’ichiro Uno, C Megan Urry, Eugenio Ursino, Shin Watanabe, Norbert Werner, Dan R Wilkins, Brian J Williams, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Y Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Yoichi Yatsu, Daisuke Yonetoku, Irina Zhuravleva, Abderahmen Zoghbi, and A J J Raassen
- Published
- 2018
- Full Text
- View/download PDF
21. Hitomi X-ray observation of the pulsar wind nebula G21.5−0.9
- Author
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Felix Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steven W Allen, Lorella Angelini, Marc Audard, Hisamitsu Awaki, Magnus Axelsson, Aya Bamba, Marshall W Bautz, Roger Blandford, Laura W Brenneman, Gregory V Brown, Esra Bulbul, Edward M Cackett, Maria Chernyakova, Meng P Chiao, Paolo S Coppi, Elisa Costantini, Jelle de Plaa, Cor P de Vries, Jan-Willem den Herder, Chris Done, Tadayasu Dotani, Ken Ebisawa, Megan E Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew C Fabian, Carlo Ferrigno, Adam R Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi C Gallo, Poshak Gandhi, Margherita Giustini, Andrea Goldwurm, Liyi Gu, Matteo Guainazzi, Yoshito Haba, Kouichi Hagino, Kenji Hamaguchi, Ilana M Harrus, Isamu Hatsukade, Katsuhiro Hayashi, Takayuki Hayashi, Kiyoshi Hayashida, Junko S Hiraga, Ann Hornschemeier, Akio Hoshino, John P Hughes, Yuto Ichinohe, Ryo Iizuka, Hajime Inoue, Yoshiyuki Inoue, Manabu Ishida, Kumi Ishikawa, Yoshitaka Ishisaki, Masachika Iwai, Jelle Kaastra, Tim Kallman, Tsuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Nobuyuki Kawai, Richard L Kelley, Caroline A Kilbourne, Takao Kitaguchi, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Katsuji Koyama, Shu Koyama, Peter Kretschmar, Hans A Krimm, Aya Kubota, Hideyo Kunieda, Philippe Laurent, Shiu-Hang Lee, Maurice A Leutenegger, Olivier Limousin, Michael Loewenstein, Knox S Long, David Lumb, Greg Madejski, Yoshitomo Maeda, Daniel Maier, Kazuo Makishima, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian R McNamara, Missagh Mehdipour, Eric D Miller, Jon M Miller, Shin Mineshige, Kazuhisa Mitsuda, Ikuyuki Mitsuishi, Takuya Miyazawa, Tsunefumi Mizuno, Hideyuki Mori, Koji Mori, Koji Mukai, Hiroshi Murakami, Richard F Mushotzky, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Shinya Nakashima, Kazuhiro Nakazawa, Kumiko K Nobukawa, Masayoshi Nobukawa, Hirofumi Noda, Hirokazu Odaka, Takaya Ohashi, Masanori Ohno, Takashi Okajima, Naomi Ota, Masanobu Ozaki, Frits Paerels, Stéphane Paltani, Robert Petre, Ciro Pinto, Frederick S Porter, Katja Pottschmidt, Christopher S Reynolds, Samar Safi-Harb, Shinya Saito, Kazuhiro Sakai, Toru Sasaki, Goro Sato, Kosuke Sato, Rie Sato, Makoto Sawada, Norbert Schartel, Peter J Serlemtsos, Hiromi Seta, Megumi Shidatsu, Aurora Simionescu, Randall K Smith, Yang Soong, Łukasz Stawarz, Yasuharu Sugawara, Satoshi Sugita, Andrew Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Tadayuki Takahashi, Shin’ichiro Takeda, Yoh Takei, Toru Tamagawa, Takayuki Tamura, Takaaki Tanaka, Yasuo Tanaka, Yasuyuki T Tanaka, Makoto S Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Go Tsuru, Hiroyuki Uchida, Hideki Uchiyama, Yasunobu Uchiyama, Shutaro Ueda, Yoshihiro Ueda, Shin’ichiro Uno, C Megan Urry, Eugenio Ursino, Shin Watanabe, Norbert Werner, Dan R Wilkins, Brian J Williams, Shinya Yamada, Hiroya Yamaguchi, Kazutaka Yamaoka, Noriko Y Yamasaki, Makoto Yamauchi, Shigeo Yamauchi, Tahir Yaqoob, Yoichi Yatsu, Daisuke Yonetoku, Irina Zhuravleva, Abderahmen Zoghbi, Toshiki Sato, Nozomu Nakaniwa, Hiroaki Murakami, and Benson Guest
- Published
- 2018
- Full Text
- View/download PDF
22. Understanding the physical state of hot plasma formed through stellar wind collision in WR140 using high-resolution X-ray spectroscopy
- Author
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Asca Miyamoto, Yasuharu Sugawara, Yoshitomo Maeda, Manabu Ishida, Kenji Hamaguchi, Michael Corcoran, Christopher M P Russell, and Anthony F J Moffat
- Subjects
Space and Planetary Science ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Solar and Stellar Astrophysics ,Astronomy and Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
We analyse a series of XMM–Newton RGS data of the binary Wolf–Rayet star WR140 that encompasses one entire orbit. We find that the RGS detects X-rays from optically thin thermal plasma only during orbital phases when the companion O star is on the near side of the WR star. Although such X-rays are believed to be emitted from the shock cone formed through collision of the stellar winds, temperature and density profiles of the plasma along the cone have not been measured observationally. We find that the temperature of the plasma producing Ne emission lines is 0.4–0.8 keV, using the intensity ratio of Kα lines from He-like and H-like Ne. We also find, at orbital phases 0.816 and 0.912, that the electron number density in the Ne line-emission site is approximately 1012 cm−3 from the observed intensity ratios f/r and i/r of the He-like triplet. We calculated the shock cone shape analytically, and identify the distance of the Ne line-emission site from the shock stagnation point to be 0.9–8.9 × 1013 cm using the observed ratio of the line-of-sight velocity and its dispersion. This means that we will be able to obtain the temperature and density profiles along the shock cone with emission lines from other elements. We find that the photoexcitation rate by the O star is only 1.3–16.4 per cent of that of the collisional excitation at orbital phase 0.816. This implies that our assumption that the plasma is collisionally excited is reasonable, at least at this orbital phase.
- Published
- 2022
- Full Text
- View/download PDF
23. Evaluation of disk-retry methods for continuous media data.
- Author
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Seiji Toda, Manabu Ishida, and Haruo Yokota
- Published
- 2006
- Full Text
- View/download PDF
24. X-ray transmission calibration of the gate valve for the x-ray astronomy satellite XRISM
- Author
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Mayu Tominaga, Manabu Ishida, Shunji Kitamoto, Yoshitomo Maeda, Ken Ebisawa, Takuya Midooka, Nozomi Nakaniwa, and Masahiro Tsujimoto
- Subjects
Diffraction ,Materials science ,Physics::Instrumentation and Detectors ,business.industry ,Scattering ,Astrophysics::High Energy Astrophysical Phenomena ,Mechanical Engineering ,Astrophysics::Instrumentation and Methods for Astrophysics ,Incoherent scatter ,Bragg's law ,Astronomy and Astrophysics ,Gate valve ,Synchrotron ,Electronic, Optical and Magnetic Materials ,law.invention ,Optics ,Beamline ,Space and Planetary Science ,Control and Systems Engineering ,law ,Calibration ,business ,Instrumentation - Abstract
Resolve onboard the x-ray satellite X-Ray Imaging and Spectroscopy Mission (XRISM) is a cryogenic instrument with an x-ray microcalorimeter in a Dewar. A lid partially transparent to x-rays (called gate valve or GV) is installed at the top of the Dewar along the optical axis. Because observations will be made through the GV for the first few months, the x-ray transmission calibration of the GV is crucial for initial scientific outcomes. We present the results of our ground calibration campaign of the GV, which is composed of a Be window and a stainless steel mesh. For the stainless steel mesh, we measured its transmission using the x-ray beamline at ISAS. For the Be window, we used synchrotron facilities to measure the transmission and modeled the data with (i) photoelectric absorption and incoherent scattering of Be, (ii) photoelectric absorption of contaminants, and (iii) coherent scattering of Be changing at specific energies. We discuss the physical interpretation of the transmission discontinuity caused by the Bragg diffraction in polycrystal Be, which we incorporated into our transmission phenomenological model. We present the x-ray diffraction measurement on the sample to support our interpretation. The measurements and the constructed model meet the calibration requirements of the GV. We also performed a spectral fitting of the Crab nebula observed with Hitomi SXS and confirmed improvements of the model parameters.
- Published
- 2021
25. XL-Calibur: the next-generation balloon-borne hard x-ray polarimeter
- Author
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Richard Bose, G. E. Simburger, Hiromitsu Takahashi, David Kotsifakis, Felix Ryde, Takuya Miyazawa, Hiroshi Tsunemi, Takao Kitaguchi, Yuusuke Uchida, David Stuchlik, Takashi Okajima, Andrew West, Sean Spooner, Tsunefumi Mizuno, Brett Vincent, John W. Elliot, Ryuya Yamamoto, Yasushi Fukazawa, Taisei Mineta, Fumiya Imazato, Mark Pearce, Paul Dowkontt, Nagomi Uchida, Theodor-Adrian Stana, Gianluigi De Geronimo, Manabu Ishida, Kazunori Ishibashi, Yoshitomo Maeda, Akihiro Furuzawa, Chris Purdy, Kengo Hattori, Chris Shreeves, Kenny E. Hall, Teruaki Enoto, Yuto Yoshida, Errando Manel, Keon D. Harmon, Carl Snow, Kiyoshi Hayashida, Hisamitsu Awaki, Keisuke Tamura, Nozomi Nakaniwa, Matthew G. Baring, Lindsey Lisalda, Arman Hossen, Ephraim Gau, Keisuke Uchiyama, Mózsi Kiss, Hironori Matsumoto, Shuichi Gunji, James Lanzi, Izabella Pastrani, Dana Braun, Mai Takeo, Brian Rauch, Nirmal Iyer, Yoshitaka Saito, Quincy Abarr, Hiroto Matake, Toru Tamagawa, Eric A. Wulf, Fabian Kislat, Tomoshi Takeda, Zachary Peterson, Victor Guarino, Thomas Gadson, Henric Krawczynski, and Scott Heatwole
- Subjects
Physics ,Photon ,Physics::Instrumentation and Detectors ,business.industry ,Linear polarization ,Astrophysics::High Energy Astrophysical Phenomena ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Polarimetry ,Compton scattering ,Polarimeter ,Polarization (waves) ,law.invention ,Telescope ,Optics ,law ,business - Abstract
This paper introduces a second-generation balloon-borne hard X-ray polarimetry mission, XL-Calibur. X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as pulsars and binary black hole systems. The XL-Calibur contains a grazing incidence X-ray telescope with a focal plane detector unit that is sensitive to linear polarization. The telescope is very similar in design to the ASTRO-H HXT telescopes that has the world’s largest effective area above ~10 keV. The detector unit combines a low atomic number Compton scatterer with a CdZnTe detector assembly to measure the polarization making use of the fact that polarized photons Compton scatter preferentially perpendicular to the electric field orientation. It also contains a CdZnTe imager at the bottom. The detector assembly is surrounded by the improved anti-coincidence shielding, giving a better sensitivity. The pointing system with arcsecond accuracy will be achieved.
- Published
- 2021
26. Current status of the x-ray mirror for the XL-Calibur experiment
- Author
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Paul Dowkontt, Takao Kitaguchi, Teruaki Enoto, Thomas Gadson, Hiroshi Tsunemi, Rakhee Kushwah, Keisuke Tamura, Scott E. Heatwole, Yoshitomo Maeda, Manel Errando, Tsunefumi Mizuno, Kiyoshi Hayashida, Kengo Hattori, Andrew West, Hiromitsu Takahashi, Yasushi Fukazawa, Dana Braun, Hisamitsu Awaki, Richard Bose, Brian Rauch, Shuichi Gunji, Hironori Matsumoto, Nozomi Nakaniwa, Lindsey Lisalda, Nirmal Iyer, Takuya Miyazawa, Quincy Abarr, Hirofumi Noda, Gianluigi De Geronimo, Victor Guarino, Manabu Ishida, Takashi Okajima, Kazumi Uchida, Shaorui Li, Zachary Peterson, Fabian Kislat, David Stuchlik, Mai Takeo, Henric Krawczynski, Mózsi Kiss, Mark Pearce, James Lanzi, Toru Tamagawa, and Shuntaro Ide
- Subjects
Physics ,business.industry ,Antenna aperture ,Polarimetry ,X-ray optics ,Bragg's law ,Astronomical survey ,law.invention ,Telescope ,Optics ,law ,Coaxial ,Focus (optics) ,business - Abstract
XL-Calibur is a balloon-borne hard X-ray polarimetry mission, the first flight of which is currently foreseen for 2021. XL-Calibur carries an X-ray telescope consists of consists of 213 Wolter I grazing-incidence mirrors which are nested in a coaxial and cofocal configuration. The optics design is nearly identical to the Hard X-ray Telescope (HXT) on board the ASTRO-H satellite. The telescope was originally fabricated for the Formation Flying Astronomical Survey Telescope (FFAST) project. However, the telescope can be used for XL-Calibur, since the FFAST project was terminated before completion. The mirror surfaces are coated with Pt/C depth-graded multilayers to reflect hard X-rays above 10 keV by Bragg reflection. The effective area of the telescope is larger than 300 cm^2 at 30 keV. The mirrors are supported by alignment bars in the housing, and each of the bars has a series of 213 grooves to hold the mirrors. To obtain the best focus of the optics, the positions of the mirrors have to be adjusted by tuning the positions of the alignment bars. The tuning of the mirror positions is conducted using the X-ray beam at the synchrotron facility SPring-8 BL20B2, and this process is called optical tuning. First the positions of the second reflectors are tuned, and then those of the first reflectors are tuned. We did the first optical tuning in Jan 2020. The second tuning will be planned between April to July, 2020. This paper reports the current status of the hard X-ray telescope for XL-Calibur.
- Published
- 2020
27. Development of a powerful x-ray generator with a small spot-size option at ISAS x-ray beamline facility
- Author
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Shunichi Nakatsubo, Nozomi Nakaniwa, Yoshitomo Maeda, Manabu Ishida, Takaya Ohashi, Hitomi Suzuki, and Mai Takeo
- Subjects
Point spread function ,Physics ,business.industry ,law.invention ,Generator (circuit theory) ,Telescope ,Core (optical fiber) ,Optics ,Beamline ,law ,Pinhole (optics) ,business ,X-ray generator ,Raster scan - Abstract
We present the measurements of the spot size of a powerful X-ray generator at an ISAS 30m X-ray beamline facility. The generator was manufactured by Rigaku corporation. A parallel light is ideal to measure the point spread function of an X-ray telescope. However, we cannot make purely parallel light because we have to use an X-ray source with a finite size at a finite distance in a ground facility. When we evaluate a performance of X-ray telescope on the ground, an apparent size of an X-ray source often limits measurements of its point-spread function (PSF). The smaller X-ray source at the larger distance is needed to measure the PSF core of X-ray telescope. A high power X-ray source is also need to illuminate a telescope with a raster scan method that allows us precise measurements of a PSF tail. Therefore a powerful X-ray generator with a small spot size is strongly favoured in terms of the measurements of X-ray telescopes. We then introduced a powerful 18 kW rotating anode generator with a fine point focus at ISAS in 2016. The minimum and maximum voltage is 5 and 60 keV, respectively. A small spot size is technically more difficult on a lower voltage. In order to measure the spot size of the generator, we place a pinhole with a 0.1 mm diameter at 12.7 m away from the generator. The flipped image was taken at a CCD imager place at 33.5 m away from the generator. We made measurements of the Cu-K line at 8 keV with two options. One is a high-power mode (normal filament option) with a wider spot size whereas the other is a low-power mode with a finer size (fine filament option). As a result, we found that a spot size of the normal and fine filament options are 2.8 mm and 0.80 mm (FWZI), respectively. We supplied a bias voltage of 800 V for the fine filament option. The spot size of 0.8 mm is equivalent to the angular extent of as good as 6 arcsecs in the ISAS X-ray beamline facility.
- Published
- 2020
28. X-ray transmission measurements of the gate valve for the x-ray astronomy satellite XRISM
- Author
-
Takuya Midooka, Mayu Tominaga, Ken Ebisawa, Yoshitomo Maeda, Manabu Ishida, Shinjiro Hayakawa, Shunji Kitamoto, Nozomi Nakaniwa, and Masahiro Tsujimoto
- Subjects
Materials science ,Physics::Instrumentation and Detectors ,Scattering ,business.industry ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,Incoherent scatter ,Bragg's law ,Gate valve ,Synchrotron ,law.invention ,Optical axis ,Optics ,Beamline ,law ,Calibration ,business - Abstract
Resolve onboard the X-ray satellite XRISM is a cryogenic instrument with an X-ray microcalorimeter in a Dewar. A lid partially transparent to X-rays is installed at the top of the Dewar along the optical axis, which is called the gate valve (GV). Because observations will be made through the GV for the first few months, the X-ray transmission calibration of the GV is crucial for initial scientific outcomes. We present the results of our ground calibration campaign of the GV, which is composed of a Be window and a stainless steel mesh. For the stainless steel mesh, we measured its transmission using the X-ray beamline at ISAS for the first time. For the Be window, we used synchrotron facilities to measure the transmission and modeled the data with (i) photoelectric absorption and incoherent scattering of Be, (ii) photoelectric absorption of contaminants, and (iii) coherent scattering of Be. We discuss the physical interpretation of the transmission discontinuity caused by the Bragg diffraction in poly-crystal Be, which we incorporated into our phenomenological model. The measurements and the constructed model meet the calibration requirements of the GV. We also performed a spectral fitting of the Crab nebula data observed with Hitomi SXS and confirmed improvements of the model.
- Published
- 2020
29. The FORCE mission: focusing on relativistic universe and cosmic evolution
- Author
-
Hironori Matsumoto, Tadayuki Takahashi, Hiroshi Murakami, William W. Zhang, Hisamitsu Awaki, Takaaki Tanaka, Hiroshi Tsunemi, Manabu Ishida, Shin Watanabe, Kazuhiro Nakazawa, Masayoshi Nobukawa, Takashi Okajima, Takeshi Go Tsuru, Yoshihiro Ueda, Yasushi Fukazawa, Brian J. Williams, Koji Mori, Ayaki Takeda, and Ann Hornschemeier
- Subjects
Physics ,Range (particle radiation) ,Active galactic nucleus ,Galaxy groups and clusters ,Astrophysics::High Energy Astrophysical Phenomena ,media_common.quotation_subject ,Astronomy ,Angular resolution ,Spectroscopy ,Universe ,Relativistic particle ,media_common ,Physical cosmology - Abstract
We present the concept of a future Japan-lead X-ray mission, FORCE (Focusing On Relativistic universe and Cosmic Evolution). FORCE is characterized by broadband (1-80 keV) X-ray imaging spectroscopy with high angular resolution (
- Published
- 2020
30. Super DIOS mission for exploring 'dark baryon'
- Author
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Ken Osato, Yutaka Fujita, Takeshi Go Tsuru, Kosuke Sato, Kohji Yoshikawa, Daisuke Nagai, Yuto Ichinohe, Yuki Nakashima, Yuzuru Tawara, Nobuyuki Kawai, Shinya Yamada, Yuusuke Uchida, Kazuhisa Mitsuda, Kyoko Matsushita, Shinya Nakashima, Yoshitaka Ishisaki, Naomi Ota, Manabu Ishida, Takaya Ohashi, Noriko Y. Yamasaki, Ikuyuki Mitsuishi, Yoshitomo Maeda, Ryuichi Fujimoto, and Yuichiro Ezoe
- Subjects
Physics ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy ,Warm–hot intergalactic medium ,Field of view ,X-ray telescope ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Redshift ,Baryon ,Intergalactic travel ,Angular resolution ,Emission spectrum ,Astrophysics::Galaxy Astrophysics - Abstract
We are studying an improved DIOS (Diffuse Intergalactic Oxygen Surveyor) program, Super DIOS, which is accepted for establishing the Research Group in ISAS/JAXA, for a launch year after 2030. The aim of Super DIOS is an X-ray quantitative exploration of ”dark baryon” over several scales from circumgalactic medium, cluster outskirt to warm-hot intergalactic medium along the Cosmic web with mapping redshifted emission lines from mainly oxygen and other ions. These observations play key roles for investigating the physical condition, such as the energy flow and metal circulation, of most baryons in the Universe. This mission will perform wide field X-ray spectroscopy with a field of view of about 0.5–1 degree and energy resolution of a few eV with TES microcalorimeter, but with much improved angular resolution of about 10–15 arcseconds. We will also consider including a small gamma-ray burst monitor and a fast repointing system. We will have an international collaboration with US and Europe for all the onboard instruments.
- Published
- 2020
31. New method to make a smooth surface on Carbon Fiber Reinforced Plastic (CFRP) substrate
- Author
-
Ikuyuki Mitsuishi, Ryuya Yamamoto, Kazunori Asakura, Chisato Oue, Kazuhiro Nakazawa, Satoshi Sugita, Taisei Mineta, Kengo Hattori, Marina Yoshimoto, Hironori Matsumoto, Kazunori Ishibashi, Takuya Miyazawa, Manabu Ishida, Ayami Ishikura, Yuusuke Uchida, Kenmei Sawagami, Hiromitsu Takahashi, Nozomi Nakaniwa, Yusuke Matsushita, Hitomi Suzuki, Yuuichi Ode, Maho Hanaoka, Nozomi Aida, Yoshitomo Maeda, and Hisamitsu Awaki
- Subjects
Paraboloid ,Materials science ,chemistry ,Surface roughness ,X-ray optics ,Formability ,chemistry.chemical_element ,Substrate (printing) ,Fibre-reinforced plastic ,Composite material ,Tungsten ,Intensity (heat transfer) - Abstract
CFRP is a composite material composed of carbon fiber and resin. CFRP is commonly applied to the aerospace industry which requires lightweight and intensity. Thanks to superior formability of CFRP, we can form shape of Wolter-1 optics, which consists of paraboloid and hyperboloid, to a monolithic substrate. Since the surface roughness of a CFRP substrate is a few µm, we have to make the smooth surface for reflecting X-rays on the CFRP substrate. We have developed a new method of shaping the reflective surface instead of the replica method used in lightweight X-ray mirrors such as Astro-H. In the new method, the reflective surface is formed by pasting thin sheet-glasses with 100 µm thick onto the CFRP substrate. The thin sheet-glass has a surface roughness about 0.4 nm as measured by Zygo. We fabricated a CFRP mirror pasting thin sheet-glasses, and then coated tungsten on the mirror in June 2020. The figure error (s) of the CFRP mirror was achieved to be about 1-2 μm by stacking the CFRP mirror on the housing module. X-ray imaging quality of the CFRP mirror was measured at Spring-8 in July 2020. The half-power diameter of the CFRP mirror was estimated to be about 150 arcsec, which was nearly equal to the prediction from a distribution of the slope error deduced from the surface profile. We describe a future plan to improve the image quality of the CFRP mirror.
- Published
- 2020
32. The scientific results from the X-ray observatory Hitomi
- Author
-
Manabu Ishida
- Subjects
Physics ,Supernova ,Crab Nebula ,Observatory ,Astronomy ,Satellite ,Spectral resolution ,Spectroscopy ,Image resolution ,Spectral line - Abstract
Hitomi is the 6th Japanese X-ray astronomy satellite launched on 2016 Feb 17. Although it was unfortunately lost about 1 month from the launch, Hitomi produced many new scientific results, owing to extremely high spectral resolution of the non-dispersive SXS detector (X-ray micro-calorimeter). From the observations of the Perseus cluster, a stringent upper limit of the turbulent pressure, only
- Published
- 2020
33. Status of x-ray imaging and spectroscopy mission (XRISM)
- Author
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Yutaka Fujita, Koji Mukai, Peter Shirron, Kumiko K. Nobukawa, Toshiaki Takeshima, Isamu Hatsukade, Richard F. Mushotzky, Brian J. Williams, Greg Brown, Hirofumi Noda, Brian Comber, Maria Diaz-Trigo, Manabu Ishida, Brian R. McNamara, Takahiro Sasaki, M. Ohno, Iurii Babyk, Richard L. Kelley, Sayuri Iga, Hiroshi Nakajima, Yuusuke Uchida, Hiroya Yamaguchi, Caroline A. Kilbourne, Takeshi Go Tsuru, Kosuke Sato, Tsunefumi Mizuno, Ryo Iizuka, Irina Zhuravleva, Shogo B. Kobayashi, Hironori Matsumoto, Matthew Holland, K. Matsuzaki, Makoto Sawada, Laura Brenneman, Susumu Yasuda, Shinya Yamada, Makoto Tashiro, Hirokazu Odaka, Yoshihiro Ueda, Keiichi Yanagase, Hiroki Akamatsu, Yasuharu Sugawara, Akihiro Furuzawa, Nobutaka Bando, Akio Hoshino, Koji Mori, Misaki Mizumoto, Lia Corrales, Katsuhiro Hayashi, Yasushi Fukazawa, Hideki Uchiyama, Hironori Maejima, Robert Petre, Yoshitaka Ishisaki, Teruaki Enoto, Mina Ogawa, Kenichi Toda, Natalie Hell, Shin'ichiro Uno, Tessei Yoshida, Thomas G. Bialas, Maurice A. Leutenegger, Masayuki Ohta, Yang Soong, Elisa Costantini, Kenji Hamaguchi, Shunji Kitamoto, Takafumi Horiuchi, Leslie Hartz, Luigi C. Gallo, Edmund Hodges-Kluck, Renata Cumbee, Yusuke Nishioka, Toshiki Sato, Paul P. Plucinsky, Katja Pottschmidt, Aya Kubota, Ehud Behar, Tom Lockard, Masanobu Ozaki, Kenji Minesugi, Ann Hornschemeier, T. R. Jaffe, Aurora Simionescu, Kazutaka Yamaoka, Stéphane Paltani, Keisuke Tamura, Chris Done, Makoto Yamauchi, Kouichi Hagino, Kosei Ishimura, Akihide Kobayashi, Eric J. Miller, Carlo Ferrigno, Hiromitsu Takahashi, Hiromi Seta, Nathalie Gorter, Cor P. de Vries, Michael J. Sampson, A. E. Szymkowiak, Mark O. Kimball, Gary A. Sneiderman, Dan McCammon, Meng P. Chiao, S. Eguchi, Randall K. Smith, Naoki Ishihama, Yohko Tsuboi, Jon M. Miller, Erin Kara, Takayoshi Kohmura, Timothy R. Kallman, Takashi Okajima, Kenichiro Nigo, Jan-Willem den Herder, Shigeo Yamauchi, Kazunori Someya, Maxim Markevitch, Yuto Ichinohe, M. C. Witthoeft, Yukikatsu Terada, Nasa Yoshioka, Edgar Canavan, Jelle Kaastra, Takao Kitaguchi, Masahiro Tsujimoto, Hideto Nakamura, Shinji Mitani, Hiroyuki Uchida, Masayoshi Nobukawa, R. Sato, Atsushi Tanimoto, Junko S. Hiraga, Keisuke Shinozaki, Yuichiro Ezoe, Hiroshi Tsunemi, Brian McLaughlin, Yasuko Shibano, Ikuyuki Mitsuishi, Matteo Guainazzi, Lillian Reichenthal, Yuichi Terashima, Kumi Ishikawa, Naomi Ota, Chikara Natsukari, Joseph Miko, Kiyoshi Hayashida, M. Loewenstein, Connor Martz, Tahir Yaqoob, D. Eckert, Ryuichi Fujimoto, Johannes Dercksen, Hiroshi Murakami, Hiroshi Tomida, Ken Ebisawa, Rob Wolfs, Martin Grim, Tomomi Watanabe, Marc Audard, Keisuke Sugawara, Yoh Takei, Megan E. Eckart, Takaya Ohashi, Atsushi Okamoto, Noriko Y. Yamasaki, Shin Watanabe, Yoshitomo Maeda, Shuhei Shigeto, Yoshitaka Arai, Maki Shida, Hisamitsu Awaki, Muzi Li, Takaaki Tanaka, Tadayasu Dotani, David Hawthorn, Jacco Vink, Joy Henegar-Leon, Rozenn Boissay-Malaquin, Kazuhiro Nakazawa, Aya Bamba, Megumi Shidatsu, Satoru Katsuda, Liyi Gu, Kyoko Matsushita, Toru Tamagawa, F. Scott Porter, Michael J. DiPirro, Steven Kenyon, and High Energy Astrophys. & Astropart. Phys (API, FNWI)
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Sun sensor ,Cardinal point ,Spacecraft ,Robustness (computer science) ,Computer science ,business.industry ,Survivability ,Control reconfiguration ,Field of view ,Aerospace engineering ,business ,Fault detection and isolation - Abstract
The X-Ray Imaging and Spectroscopy Mission (XRISM) is the successor to the 2016 Hitomi mission that ended prematurely. Like Hitomi, the primary science goals are to examine astrophysical problems with precise highresolution X-ray spectroscopy. XRISM promises to discover new horizons in X-ray astronomy. XRISM carries a 6 x 6 pixelized X-ray micro-calorimeter on the focal plane of an X-ray mirror assembly and a co-aligned X-ray CCD camera that covers the same energy band over a large field of view. XRISM utilizes Hitomi heritage, but all designs were reviewed. The attitude and orbit control system were improved in hardware and software. The number of star sensors were increased from two to three to improve coverage and robustness in onboard attitude determination and to obtain a wider field of view sun sensor. The fault detection, isolation, and reconfiguration (FDIR) system was carefully examined and reconfigured. Together with a planned increase of ground support stations, the survivability of the spacecraft is significantly improved.
- Published
- 2020
34. XL-Calibur -- a second-generation balloon-borne hard X-ray polarimetry mission
- Author
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Manel Errando, Yoshitomo Maeda, Hisamitsu Awaki, Fumiya Imazato, Hiroto Matake, Mark Pearce, Hiroshi Tsunemi, Toru Tamagawa, Victor Guarino, Manabu Ishida, Hiromitsu Takahashi, Henric Krawczynski, Eric A. Wulf, Felix Ryde, Takuya Miyazawa, Theodor-Adrian Stana, Takao Kitaguchi, Kiyoshi Hayashida, Yuusuke Uchida, Paul Dowkontt, Nagomi Uchida, Matthew G. Baring, Kengo Hattori, S. Spooner, Quincy Abarr, Andrew West, Tsunefumi Mizuno, Brian Rauch, G. De Geronimo, Lindsey Lisalda, Takashi Okajima, Mai Takeo, Hironori Matsumoto, Nirmal Iyer, R. Yamamoto, Mózsi Kiss, Taisei Mineta, Richard Bose, Christopher M. Shreves, Keisuke Tamura, and Fabian Kislat
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Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,010308 nuclear & particles physics ,business.industry ,Antenna aperture ,Polarimetry ,chemistry.chemical_element ,FOS: Physical sciences ,Astronomy and Astrophysics ,Polarimeter ,01 natural sciences ,Cadmium zinc telluride ,Neutron star ,chemistry.chemical_compound ,Optics ,chemistry ,0103 physical sciences ,Electromagnetic shielding ,Beryllium ,business ,Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena ,010303 astronomy & astrophysics ,Stratosphere ,Instrumentation and Methods for Astrophysics (astro-ph.IM) - Abstract
XL-Calibur is a hard X-ray (15-80 keV) polarimetry mission operating from a stabilised balloon-borne platform in the stratosphere. It builds on heritage from the X-Calibur mission, which observed the accreting neutron star GX 301-2 from Antarctica, between December 29th 2018 and January 1st 2019. The XL-Calibur design incorporates an X-ray mirror, which focusses X-rays onto a polarimeter comprising a beryllium rod surrounded by Cadmium Zinc Telluride (CZT) detectors. The polarimeter is housed in an anticoincidence shield to mitigate background from particles present in the stratosphere. The mirror and polarimeter-shield assembly are mounted at opposite ends of a 12 m long lightweight truss, which is pointed with arcsecond precision by WASP - the Wallops Arc Second Pointer. The XL-Calibur mission will achieve a substantially improved sensitivity over X-Calibur by using a larger effective area X-ray mirror, reducing background through thinner CZT detectors, and improved anticoincidence shielding. When observing a 1 Crab source for $t_{\rm day}$ days, the Minimum Detectable Polarisation (at 99% confidence level) is $\sim$2$\%\cdot t_{\rm day}^{-1/2}$. The energy resolution at 40 keV is $\sim$5.9 keV. The aim of this paper is to describe the design and performance of the XL-Calibur mission, as well as the foreseen science programme., Comment: 19 pages, 17 figures. Accepted for publication in Astroparticle Physics
- Published
- 2020
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35. Plasma Diagnostics of the Supernova Remnant N132D Using Deep XMM-Newton Observations with the Reflection Grating Spectrometer
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Paul P. Plucinsky, Eric D. Miller, Manabu Ishida, Adam R. Foster, Hiroya Yamaguchi, Hiroyuki Uchida, and Hitomi Suzuki
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Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,X-ray astronomy ,010504 meteorology & atmospheric sciences ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,Spectral line ,Space and Planetary Science ,Ionization ,0103 physical sciences ,Plasma diagnostics ,Emission spectrum ,Large Magellanic Cloud ,Supernova remnant ,Spectroscopy ,Astrophysics - High Energy Astrophysical Phenomena ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,0105 earth and related environmental sciences - Abstract
We present XMM-Newton observations of N132D, the X-ray brightest supernova remnant (SNR) in the Large Magellanic Cloud (LMC), using the Reflection Grating Spectrometer (RGS) that enables high-resolution spectroscopy in the soft X-ray band. A dozen emission lines from L-shell transitions of various elements at intermediate charge states are newly detected in the RGS data integrating the ~200-ks on-axis observations. The 0.3-2.0-keV spectra require at least three components of thermal plasmas with different electron temperatures and indicate clear evidence of non-equilibrium ionization (NEI). Our detailed spectral diagnostics further reveal that the forbidden-to-resonance line ratios of O VII and Ne IX are both higher than expected for typical NEI plasmas. This enhancement could be attributed to either resonance scattering or emission induced by charge exchange in addition to a possible contribution from the superposition of multiple temperature components, although the lack of spatial information prevents us from concluding which is most likely., Comment: 18 pages, 10 figures, accepted for publication in ApJ
- Published
- 2020
- Full Text
- View/download PDF
36. Concept for an X-ray telescope system with an angular resolution booster
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Nozomi Nakaniwa, Takayuki Hayashi, Shiro Ikeda, Ryo Iizuka, Toshiki Sato, Manabu Ishida, Mai Takeo, Hitomi Suzuki, Mikio Morii, and Yoshitomo Maeda
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Physics ,Booster (rocketry) ,business.industry ,FOS: Physical sciences ,techniques: high angular resolution ,Astronomy and Astrophysics ,X-ray telescope ,telescopes ,01 natural sciences ,010309 optics ,Optics ,Space and Planetary Science ,techniques: imaging spectroscopy ,0103 physical sciences ,Angular resolution ,Astrophysics - Instrumentation and Methods for Astrophysics ,business ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics - Abstract
We present a concept of the X-ray imaging system with high angular-resolution and moderate sensitivity. In this concept, a two-dimensional detector, i.e., imager, is put at a slightly out-of-focused position of the focusing mirror, rather than just at the mirror focus as in the standard optics, to capture the miniature image of objects. In addition, a set of multi-grid masks (or a modulation collimator) is installed in front of the telescope. We find that the masks work as a coded aperture camera and that they boost the angular resolution of the focusing optics. The major advantage of this concept is that a much better angular resolution an order of 2--3 or more than in the conventional optics is achievable, while a high throughput (large effective area) is maintained, which is crucial in photon-limited high-energy astronomy, because any type of mirrors, including light-weight reflective mirrors, can be employed in our concept. If the signal-to-noise ratio is sufficiently high, we estimate that angular resolutions at the diffraction limit of 4" and 0"4 at about 7 keV can be achieved with a pair of masks at separations of 1~m and 100~m, respectively, at the diffraction limit., Accepted for PASJ
- Published
- 2019
37. An estimation of the white dwarf mass in the Dwarf Nova GK Persei with NuSTAR observations of two states
- Author
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Yuuki Wada, Kazuhiro Nakazawa, Manabu Ishida, Takayuki Yuasa, Kazuo Makishima, and Takayuki Hayashi
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010504 meteorology & atmospheric sciences ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Accretion rate ,Intermediate polar ,0103 physical sciences ,X-rays: individual: GK Persei ,Astrophysics::Solar and Stellar Astrophysics ,010303 astronomy & astrophysics ,Dwarf nova ,Solar and Stellar Astrophysics (astro-ph.SR) ,Astrophysics::Galaxy Astrophysics ,0105 earth and related environmental sciences ,stars: dwarf novae ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Maximum temperature ,Accretion (meteorology) ,Quiescent state ,White dwarf ,Astronomy and Astrophysics ,Radius ,Astrophysics - Solar and Stellar Astrophysics ,Space and Planetary Science ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
We report on X-ray observations of the Dwarf Nova GK Persei performed by {\it NuSTAR} in 2015. GK Persei, behaving also as an Intermediate Polar, exhibited a Dwarf Nova outburst in 2015 March--April. The object was observed with {\sl NuSTAR} during the outburst state, and again in a quiescent state wherein the 15--50 keV flux was 33 times lower. Using a multi-temperature plasma emission and reflection model, the highest plasma temperature in the accretion column was measured as $19.7^{+1.3}_{-1.0}$~keV in outburst and $36.2^{+3.5}_{-3.2}$~keV in quiescence. The significant change of the maximum temperature is considered to reflect an accretion-induced decrease of the inner-disk radius $R_{\rm in}$, where accreting gas is captured by the magnetosphere. Assuming this radius scales as $R_{\rm in} \propto \dot{M}^{-2/7}$ where $\dot{M}$ is the mass accretion rate, we obtain $R_{\rm in} = 1.9 ^{+0.4}_{-0.2}~R_{\rm WD}$ and $R_{\rm in} = 7.4^{+2.1}_{-1.2}~R_{\rm WD}$ in outburst and quiescence respectively, where $R_{\rm WD}$ is the white-dwarf radius of this system. Utilising the measured temperatures and fluxes, as well as the standard mass-radius relation of white dwarfs, we estimate the white-dwarf mass as $M_{\rm WD} = 0.87~\pm~0.08~M_{\rm \odot}$ including typical systematic uncertainties by 7%. The surface magnetic field is also measured as $B \sim 5 \times 10^{5}$~G. These results exemplify a new X-ray method of estimating $M_{\rm WD}$ and $B$ of white dwarfs by using large changes in $\dot{M}$., 8 pages, 4 figures, accepted for publication in MNRAS
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- 2018
38. Induced Vibration of High-Precision Extensible Optical Bench during Extension on Orbit
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Manabu Ishida, Nobutaka Bando, Ryo Iizuka, Taro Kawano, Kazuhisa Abe, Kenji Minesugi, Takashi Sasaki, and Kosei Ishimura
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Vibration ,Physics ,business.industry ,Extension (predicate logic) ,Aerospace engineering ,Orbit (control theory) ,business ,Extensibility - Published
- 2018
39. X-ray reflection from cold white dwarfs in magnetic cataclysmic variables
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Takayuki Hayashi, Manabu Ishida, and Takao Kitaguchi
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Point source ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,X-rays: stars ,Astrophysics ,01 natural sciences ,Spectral line ,0103 physical sciences ,Thermal ,novae, cataclysmic variables ,010303 astronomy & astrophysics ,Solar and Stellar Astrophysics (astro-ph.SR) ,white dwarfs ,Spin-½ ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Line-of-sight ,Accretion (meteorology) ,010308 nuclear & particles physics ,White dwarf ,Astronomy and Astrophysics ,methods: data analysis ,Reflection (mathematics) ,Astrophysics - Solar and Stellar Astrophysics ,Space and Planetary Science ,accretion, accretion discs ,stars: fundamental parameters ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
We model X-ray reflection from white dwarfs (WD) in magnetic cataclysmic variables (mCVs) with a Monte Carlo simulation. A point source with a power-law spectrum or a realistic post-shock accretion column (PSAC) source irradiates a cool and spherical WD. The PSAC source emits thermal spectra of various temperatures stratified along the column according to the PSAC model. In the point source simulation, we confirm (1) a source harder and nearer to the WD enhances the reflection, (2) higher iron abundance enhances the equivalent widths (EWs) of fluorescent iron K${\alpha}_{1,2}$ lines and their Compton shoulder, and increases cut-off energy of a Compton hump, and (3) significant reflection appears from an area that is more than 90 deg apart from the position right under the point X-ray source because of the WD curvature. The PSAC simulation reveals that (1) a more massive WD basically enhances the intensities of the fluorescent iron K${\alpha}_{1,2}$ lines and the Compton hump, except for some specific accretion rate, because the more massive WD makes the hotter PSAC from which higher energy X-rays are preferentially emitted, (2) a larger specific accretion rate monotonically enhances the reflection because it makes the hotter and shorter PSAC, and (3) the intrinsic thermal component hardens by occultation of the cool base of the PSAC by the WD. We quantitatively evaluate influences of the parameters on the EWs and the Compton hump with both types of sources. We also calculate X-ray modulation profiles brought about by the WD spin. They depend on angles of the spin axis from the line of sight and from the PSAC, and whether the two PSACs can be seen. The reflection spectral model and the modulation model involve the fluorescent lines and the Compton hump and can directly be compared to the data which allow us to evaluate these geometrical parameters with unprecedented accuracy., Comment: 18 pages, 23 figures, accepted to MNRAS
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- 2017
40. Immune-related adverse events with immune checkpoint inhibitors
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Sunao Mikura, Manabu Ishida, Saori Takata, Nozomi Kurokawa, Fumi Kobayashi, Haruyuki Ishii, Sho Sakuma, Hajime Takizawa, Masaki Tamura, Kojiro Honda, Keitaro Nakamoto, Takeshi Saraya, Kaori Aso, Manami Inoue, Miku Oda, Aya Hirata, and Akinari Noda
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Male ,Oncology ,medicine.medical_specialty ,Time Factors ,Immune checkpoint inhibitors ,Observational Study ,immune checkpoint inhibitor ,Disease-Free Survival ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Interquartile range ,Neoplasms ,Internal medicine ,medicine ,Humans ,Endocrine system ,030212 general & internal medicine ,Adverse effect ,Time to onset ,Immune Checkpoint Inhibitors ,Lung ,Aged ,Retrospective Studies ,lung toxicity ,business.industry ,Retrospective cohort study ,General Medicine ,Middle Aged ,Progression-Free Survival ,Case-Control Studies ,030220 oncology & carcinogenesis ,immune-related adverse events ,Female ,Digestive tract ,business ,Research Article - Abstract
Immune checkpoint inhibitors (ICIs) have emerged as evolutionary treatments for malignant diseases. Although ICIs can cause immune-related adverse events (irAEs) in various organs, precise timing after ICI initiation has been scarcely reported. Elucidating the effects of irAEs, such as time to onset, involvement of major organs, influence on progression-free survival (PFS), and overall survival (OS), are critical issues for physicians. Furthermore, lung-irAE as a whole is not well known. We conducted a retrospective study of 156 patients who were treated with ICIs and compared 82 irAE patients with 74 non-irAE patients. This study clearly demonstrated that the preferred period after induction of ICIs was significantly longer in lung-irAE than in other major organs (skin, digestive tract, and endocrine). The effect of irAEs on PFS and OS was evident PFS in the irAE group (n = 82) (median 128 days, interquartile range [IQR] 62–269 days, P = .002) was significantly longer than that in the non-irAE group (n = 74) (median 53 days, IQR 33–151 days). Similarly, OS was significantly longer in the irAE group (median 578 days, IQR 274–1027 days, P = .007) than in the non-irAE group (median 464 days, IQR: 209–842 days). However, this positive effect of irAEs in the lungs was not proportional to the extent of severity. Lung-irAEs can occur at a later phase than non-lung-irAEs and seemed not to prolong OS and PFS. However, further studies are needed to support these findings.
- Published
- 2021
41. A simple method for discrimination of carcinomatous meningitis using CEA, total protein, and total cell count in the cerebrospinal fluid of primary lung cancer patients
- Author
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Takeshi Saraya, Masaki Tamura, Kojiro Honda, Kaori Aso, Haruyuki Ishii, Saori Takata, Sho Sakuma, Sunao Mikura, Nozomi Kurokawa, Yukari Ogawa, Akinari Noda, Manabu Ishida, Miku Oda, Hajime Takizawa, and Keitaro Nakamoto
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Adult ,Male ,medicine.medical_specialty ,Lung Neoplasms ,Cell Count ,total protein ,Sensitivity and Specificity ,Diagnostic Accuracy Study ,Gastroenterology ,cerebrospinal fluid ,03 medical and health sciences ,0302 clinical medicine ,Cerebrospinal fluid ,Carcinoembryonic antigen ,Predictive Value of Tests ,Internal medicine ,Biomarkers, Tumor ,medicine ,Risk of mortality ,Humans ,030212 general & internal medicine ,Lung cancer ,Aged ,Retrospective Studies ,Total protein ,Aged, 80 and over ,Predictive marker ,biology ,Proportional hazards model ,business.industry ,carcinoembryonic antigen ,Area under the curve ,Cerebrospinal Fluid Proteins ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Case-Control Studies ,030220 oncology & carcinogenesis ,biology.protein ,Female ,business ,Meningeal Carcinomatosis ,Research Article - Abstract
Carcinomatous meningitis (CM) is a critical issue for physicians. However, no study has reported a simple and useful diagnostic or predictive marker for CM. This study aimed to elucidate the potential markers for diagnosing CM derived from cerebrospinal fluid (CSF). We retrospectively enrolled 78 lung cancer patients with suspected CM during the clinical course, including 42 CM and 36 non-CM patients. We compared the clinical and CSF findings, including carcinoembryonic antigen (CEA), between CM and non-CM patients, and explored the diagnostic markers for early identification of CM as well as the contributing factors for mortality. On CSF analysis, with cutoff values of CEA ≥5 ng/ml, total protein (TP) in CSF ≥45 g/dl, and total cell count (TCC) ≥7 cells/μL, the sensitivity, specificity, and area under the curve (AUC) for CM were 85.7%, 84.6%, and 0.887 (95% CI: 0.758–1.0, P patients’ age)” (n = 19, P = .008) showed significantly shorter 90-day survival probability than the residual patients (n = 20). None of the CSF parameters could predict the risk of mortality on Cox regression analysis. The cutoff value of CEA ≥5 ng/ml in CSF is a simple and useful method with a high diagnostic value for CM diagnosis, but not a suitable predicting factor for mortality. ‘TP in CSF >patients’ age” might be a novel factor for assessing short-term mortality.
- Published
- 2021
42. The Role of Vital Signs in Predicting Cardiac Tamponade in Asymptomatic Patients with Malignancy: Associated Pericardial Effusion
- Author
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Hajime Takizawa, Naoki Tsujimoto, Haruyuki Ishii, Masaki Tamura, Miku Oda, Takeshi Saraya, Manabu Ishida, Takuma Yokoyama, Masachika Fujiwara, Takayasu Watanabe, Kosuke Ohkuma, Saori Takata, Daisuke Kurai, and Yukari Ogawa
- Subjects
medicine.medical_specialty ,business.industry ,Vital signs ,General Medicine ,medicine.disease ,Malignancy ,Pericardial effusion ,Asymptomatic ,Cardiac tamponade ,Internal medicine ,Cardiology ,Medicine ,Radiology ,medicine.symptom ,business - Published
- 2017
43. On Orbit Structural Performance of Hitomi (ASTRO-H)
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Manabu Ishida, Kenji Minesugi, Kazuhiro Abe, Kosei Ishimura, Kazunori Shoji, and Taro Kawano
- Subjects
Physics ,Astronomy ,Orbit (control theory) - Published
- 2019
44. Variation of mass accretion rate onto the white dwarf in the dwarf nova VW Hyi in quiescence
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Mai Takeo, Nozomi Nakaniwa, Manabu Ishida, and Takayuki Hayashi
- Subjects
Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,X-rays: stars ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,Instability ,Spectral line ,Luminosity ,Accretion rate ,X-rays: binaries ,0103 physical sciences ,novae, cataclysmic variables ,Astrophysics::Solar and Stellar Astrophysics ,Variation (astronomy) ,010303 astronomy & astrophysics ,Dwarf nova ,Astrophysics::Galaxy Astrophysics ,stars: dwarf novae ,Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,010308 nuclear & particles physics ,White dwarf ,Astronomy and Astrophysics ,Light curve ,Space and Planetary Science ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
We have analysed a series of Suzaku data and one dataset of XMM-Newton of the SU UMa type dwarf nova VW Hyi in optical quiescence. The observed spectra in the 0.2-10 keV band are moderately well represented by multi-temperature thermal plasma emission models with a maximum temperature of 5-9 keV and bolometric luminosity of 2.4-5.2 $\times$ 10$^{30}$ erg s$^{-1}$. The mass accretion rate derived from the hard X-ray spectra does not show any clear trend as a function of time since the last superoutburst, in contradiction to theoretical predictions of the disc behaviour of a SU UMa type dwarf nova. The mass accretion rate, on the other hand, shows a clear declining trend with time since the last outburst (including the superoutburst). The rate of decline is of the same order as that evaluated from the hard X-ray light curves of the other two dwarf novae SS Cyg and SU UMa. The standard disc instability model, on the other hand, predicts that the mass accretion rate should increase throughout the optically-quiescent phase. We need further observation and theoretical consideration to resolve this discrepancy., Comment: 11 pages, 7 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal
- Published
- 2019
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45. Detection of polarized gamma-ray emission from the Crab nebula with Hitomi Soft Gamma-ray Detector
- Author
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Akio Hoshino, Katsuhiro Hayashi, Manabu Ishida, Hideki Uchiyama, Takayuki Tamura, Shunji Kitamoto, Shin'ichiro Takeda, Shinya Saito, Daisuke Yonetoku, Peter J. Serlemtsos, Yoshitaka Ishisaki, Masachika Iwai, Hiroshi Nakajima, Megumi Shidatsu, Kumi Ishikawa, Hans A. Krimm, Ken Ebisawa, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Andrew C. Fabian, Brian R. McNamara, Shu Koyama, Samar Safi-Harb, Jan-Willem den Herder, R. Sato, Isamu Hatsukade, Hironori Matsumoto, Yoshitomo Maeda, Missagh Mehdipour, Teruaki Enoto, Hirokazu Odaka, Jelle de Plaa, Hiroshi Tsunemi, Maurice A. Leutenegger, Francesco Tombesi, Jelle Kaastra, Richard L. Kelley, Kazuhiro Nakazawa, Ikuyuki Mitsuishi, Takuya Miyazawa, G. Sato, Yohko Tsuboi, Frederick S. Porter, Norbert Werner, Fumie Akimoto, Junko S. Hiraga, Magnus Axelsson, Shinya Yamada, Ciro Pinto, David H. Lumb, Shigeo Yamauchi, Maxim Markevitch, Yuto Ichinohe, Takeshi Go Tsuru, Kosuke Sato, Koji Mori, Caroline A. Kilbourne, Yuichi Terashima, Kyoko Matsushita, Timothy R. Kallman, Philippe Laurent, Olivier Limousin, Toru Tamagawa, Luigi C. Gallo, Aya Bamba, Roger Blandford, Kiyoshi Hayashida, Yasunobu Uchiyama, Cor P. de Vries, Tsuneyoshi Kamae, Hirofumi Noda, Gregory V. Brown, Carlo Ferrigno, Yoshihiro Ueda, Yuusuke Uchida, Eric D. Miller, Yuichiro Ezoe, Andrea Goldwurm, Hiromi Seta, Frits Paerels, Katja Pottschmidt, Kazuhiro Sakai, Shin'ichiro Uno, Yoshito Haba, Stéphane Paltani, Hiromitsu Takahashi, Kazuhisa Mitsuda, Masanori Ohno, Satoshi Sugita, Masahiro Tsujimoto, Christopher S. Reynolds, Shin Mineshige, Ryuichi Fujimoto, Peter Kretschmar, Masayoshi Nobukawa, Yoh Takei, Tahir Yaqoob, Jon M. Miller, Dan R. Wilkins, Meng P. Chiao, Matteo Guainazzi, Aurora Simionescu, Hisamitsu Awaki, Paolo De Coppi, Katsuji Koyama, Masanobu Ozaki, Kumiko K. Nobukawa, Yasuharu Sugawara, Daniel Maier, Tadayuki Takahashi, Jun Kataoka, Aya Kubota, Hiroyuki Uchida, Laura Brenneman, John P. Hughes, Takayoshi Kohmura, Takaaki Tanaka, Hajime Inoue, Lorella Angelini, Toru Sasaki, Greg Madejski, Shutaro Ueda, Takao Nakagawa, Tadayasu Dotani, Maria Chernyakova, Motohide Kokubun, Takao Kitaguchi, Irina Zhuravleva, Shin Watanabe, Dan McCammon, Hideyuki Mori, Randall K. Smith, Edward M. Cackett, Norbert Schartel, Margherita Giustini, Megan E. Eckart, Tsunefumi Mizuno, Liyi Gu, Chris Done, Takeshi Nakamori, Takaya Ohashi, Shiu-Hang Lee, Michael Loewenstein, Adam R. Foster, Poshak Gandhi, Yasushi Fukazawa, Kenji Hamaguchi, Satoru Katsuda, Knox S. Long, Ilana M. Harrus, Yuzuru Tawara, Hideyo Kunieda, Lukasz Stawarz, C. Megan Urry, Richard F. Mushotzky, Nobuyuki Kawai, Brian J. Williams, Tetsu Kitayama, Felix Aharonian, Yoshiyuki Inoue, Noriko Y. Yamasaki, Eugenio Ursino, Takayuki Hayashi, Yukikatsu Terada, Makoto Yamauchi, Yasuo Tanaka, Steven W. Allen, Kazuo Makishima, Marc Audard, Shinya Nakashima, Naomi Ota, Hiroyasu Tajima, Hiroshi Murakami, Hiroshi Tomida, Hiroya Yamaguchi, Ryo Iizuka, Kouichi Hagino, Yoichi Yatsu, Kazutaka Yamaoka, Koji Mukai, Abderahmen Zoghbi, Makoto Tashiro, Ann Hornschemeier, Makoto Sawada, Marshall W. Bautz, Takashi Okajima, Esra Bulbul, Yang Soong, Akihiro Furuzawa, Hiroki Akamatsu, Andrew Szymkowiak, Robert Petre, Elisa Costantini, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Hitomi, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)
- Subjects
Photon ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astrophysics ,01 natural sciences ,polarimeters [instrumentation] ,X-rays: individual (Crab) ,symbols.namesake ,Settore FIS/05 - Astronomia e Astrofisica ,Pulsar ,0103 physical sciences ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Nebula ,polarization ,Brewster's angle ,Spectrometer ,010308 nuclear & particles physics ,Gamma ray ,instrumentation: polarimeters ,Astronomy and Astrophysics ,Polarization (waves) ,Crab Nebula ,individual (Crab) [X-rays] ,Space and Planetary Science ,symbols ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
著者人数: 193名(所属. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS): 堂谷, 忠靖; 海老沢, 研; 林, 克洋; 飯塚, 亮; 井上, 芳幸; 石田, 学; 石川, 久美; 岩井, 将親; 国分, 紀秀; 小山, 志勇; 前田, 良知; 満田, 和久; 中川, 貴雄; 尾崎, 正伸; 佐藤, 悟郎; 佐藤, 理江; Simionescu, Aurora; 菅原, 泰晴; 高橋, 忠幸; 竹井, 洋; 田村, 隆幸; 田中, 靖郎; 冨田, 洋; 辻本, 匡弘; 上田, 周太朗; 渡辺, 伸; 山崎, 典子; 内田, 悠介), Accepted: 2018-09-30, 資料番号: SA1180351000
- Published
- 2018
46. Genetic determinants of risk in autoimmune pulmonary alveolar proteinosis
- Author
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Tatsuo Masuda, Jun Hirata, Tomohiro Handa, Kyuto Sonehara, Kenichi Yamamoto, Yoshinori Tanino, Saori Sakaue, Meiko Takahashi, Takashi Yamada, Masaru Suzuki, Hiromasa Inoue, Konosuke Morimoto, Takafumi Suda, Toru Arai, Keisuke Tomii, Atsushi Kumanogoh, Hidenori Ibata, Fumihiko Matsuda, Yoshikazu Inoue, Koh Nakata, Nobuyuki Hizawa, Toshiyuki Kato, Yuichi Maeda, Hideki Mochizuki, Kiminobu Tanizawa, Kazuyoshi Imaizumi, Ken Suzuki, Masaki Watanabe, Naoya Takeda, Ryushi Tazawa, Hiroshi Kida, Satoshi Konno, Yasuhiro Goto, Toshihiro Kishikawa, Haruyuki Ishii, Masahiro Takaki, Koshi Yokomura, Manabu Ishida, Atsushi Nakagawa, Masaki Hirose, Takashi Matsui, Tomomitsu Hirota, Takefumi Nikaido, Satoru Miyawaki, Satoru Ito, Etsuro Yamaguchi, Taizou Hirano, Toshinori Takada, Shogo Dofuku, Yasuomi Satake, Shinya Ohkouchi, Kotaro Ogawa, Takuro Nii, Tomoyuki Fujisawa, Toshio Ichiwata, Mayumi Tamari, and Yukinori Okada
- Subjects
0301 basic medicine ,Male ,General Physics and Astronomy ,Gene Expression ,Genome-wide association study ,Genome-wide association studies ,0302 clinical medicine ,Gene Frequency ,Japan ,Odds Ratio ,Protein Isoforms ,Surfactant homeostasis ,education.field_of_study ,Multidisciplinary ,digestive, oral, and skin physiology ,respiratory system ,Middle Aged ,030220 oncology & carcinogenesis ,Chromosomes, Human, Pair 6 ,Female ,Pulmonary alveolar proteinosis ,Adult ,Risk ,Science ,Population ,Human leukocyte antigen ,Pulmonary Alveolar Proteinosis ,General Biochemistry, Genetics and Molecular Biology ,Article ,Autoimmune Diseases ,03 medical and health sciences ,Asian People ,Genetic predisposition ,medicine ,Humans ,Genetic Predisposition to Disease ,education ,Allele frequency ,Alleles ,Aged ,Autoantibodies ,Respiratory tract diseases ,business.industry ,Case-control study ,Granulocyte-Macrophage Colony-Stimulating Factor ,Pulmonary Surfactants ,General Chemistry ,medicine.disease ,030104 developmental biology ,Case-Control Studies ,Immunology ,business ,Genome-Wide Association Study ,HLA-DRB1 Chains - Abstract
Pulmonary alveolar proteinosis (PAP) is a devastating lung disease caused by abnormal surfactant homeostasis, with a prevalence of 6–7 cases per million population worldwide. While mutations causing hereditary PAP have been reported, the genetic basis contributing to autoimmune PAP (aPAP) has not been thoroughly investigated. Here, we conducted a genome-wide association study of aPAP in 198 patients and 395 control participants of Japanese ancestry. The common genetic variant, rs138024423 at 6p21, in the major-histocompatibility-complex (MHC) region was significantly associated with disease risk (Odds ratio [OR] = 5.2; P = 2.4 × 10−12). HLA fine-mapping revealed that the common HLA class II allele, HLA-DRB1*08:03, strongly drove this signal (OR = 4.8; P = 4.8 × 10−12), followed by an additional independent risk allele at HLA-DPβ1 amino acid position 8 (OR = 0.28; P = 3.4 × 10−7). HLA-DRB1*08:03 was also associated with an increased level of anti-GM-CSF antibody, a key driver of the disease (β = 0.32; P = 0.035). Our study demonstrated a heritable component of aPAP, suggesting an underlying genetic predisposition toward an abnormal antibody production., Autoimmune pulmonary alveolar proteinosis (aPAP) is a complex lung disease caused by abnormal surfactant homeostasis. Here, the authors carry out a genome-wide association study of aPAP in a Japanese cohort, finding variants in the MHC and suggesting predisposition to abnormal antibody production.
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- 2021
47. Successful Treatment of Mepolizumab- and Prednisolone-resistant Allergic Bronchopulmonary Aspergillosis with Dupilumab.
- Author
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Sunao Mikura, Takeshi Saraya, Yuki Yoshida, Miku Oda, Manabu Ishida, Kojiro Honda, Keitaro Nakamoto, Masaki Tamura, Saori Takata, Hiroaki Shimoyamada, Masachika Fujiwara, and Haruyuki Ishii
- Published
- 2021
- Full Text
- View/download PDF
48. A new diagnostic approach for bilious pleural effusion
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Manabu Ishida, Richard W. Light, Shoko Wada, Takashi Koide, Hajime Takizawa, Toshiya Inui, Haruyuki Ishii, Yasuo Nakamoto, Takeshi Saraya, and Sho Sakuma
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Male ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Percutaneous ,Bilirubin ,Pleural effusion ,Subphrenic abscess ,Gastroenterology ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Aged ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Incidence (epidemiology) ,Retrospective cohort study ,Middle Aged ,medicine.disease ,Echinococcosis ,respiratory tract diseases ,Surgery ,Pleural Effusion ,030228 respiratory system ,chemistry ,Liver biopsy ,Female ,business - Abstract
Background Bilious pleural effusion is an extremely rare condition associated with liver diseases, subphrenic or subhepatic abscess formation, biliary peritonitis, and invasive procedures (i.e., percutaneous biliary drainage or liver biopsy). The current diagnostic test is based on the measurement of the ratio of pleural total bilirubin to serum total bilirubin, which is greater than 1 in patients with bilious pleural effusion. Given the low incidence of bilious pleural effusion, the precise diagnostic yield of this ratio based test has not been evaluated. Methods We retrospectively reviewed the medical records of our institution and searched the PubMed database for reports of bilious pleural effusion. Results We identified a total of 12 cases of bilious pleural effusion (9 from 8 Pubmed reports and 3 from our institutional records). The factors causing this condition were broadly classified into three categories based on the pathophysiology: 1) liver diseases (echinococcosis, tuberculosis and amebiasis); 2) subhepatic/subphrenic abscess or biliary peritonitis, with or without biliary tract obstruction; and 3) iatrogenic disease after percutaneous biliary drainage and/or liver biopsy. The sensitivity of detection was 76.9% when the ratio of pleural total bilirubin to serum total bilirubin was greater than 1. The sensitivity increased to 100% when a combination test including pleural glycoholic acid was adopted. Conclusions This study demonstrates the high diagnostic yield for bilious pleural effusion using a combination of two test criteria; a ratio of pleural total bilirubin to serum total bilirubin greater than 1 and the presence of pleural glycoholic acid.
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- 2016
49. Suzaku X-ray observation of the GK Persei dwarf nova outburst in 2015
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Takayuki Hayashi, Takayuki Yuasa, and Manabu Ishida
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Physics ,X-rays: individual: GK Persei ,010308 nuclear & particles physics ,Space and Planetary Science ,0103 physical sciences ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,010303 astronomy & astrophysics ,01 natural sciences ,Dwarf nova ,stars: dwarf novae - Abstract
Accepted: 2016-03-24, 資料番号: SA1160282000
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- 2016
50. Development of x-ray mirror foils using a hot plastic deformation process
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Yuichiro Ezoe, Masaki Numazawa, Mai Takeo, Kumi Ishikawa, Kazuo Nakajima, Nozomi Nakaniwa, Manabu Ishida, and Kohei Morishita
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business.product_category ,Materials science ,Silicon ,business.industry ,chemistry.chemical_element ,Reflector (antenna) ,Radius ,Conical surface ,Substrate (electronics) ,Curvature ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,010309 optics ,Optics ,chemistry ,0103 physical sciences ,Die (manufacturing) ,Electrical and Electronic Engineering ,Deformation (engineering) ,business ,Engineering (miscellaneous) - Abstract
In this paper, we present a silicon reflector developed through a hot plastic deformation process and used as a lightweight, high-angular-resolution x-ray mirror. We deformed the silicon substrate using conical dies with a curvature radius of 100 mm. The measured radii of the reflector were approximately 100 µm greater than the design values. Due to a gap between the die and the reflector toward the edge, it is probable that the substrate did not reach the yield point, and an elastic spring back occurred. In addition, we have evaluated the x-ray imaging capability of the plastically deformed silicon reflector for the first time, to the best of our knowledge. The estimated angular resolution is 1.76 arc min from the entire reflector, and 0.52 arc min in the best region. For the enhancement of the imaging capability, we may improve the shape of die and determine the best parameter set for the deformation.
- Published
- 2020
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