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As one of the best ground-based photometric dataset, Pan-STARRS1 (PS1) has been widely used as the reference to calibrate other surveys. In this work, we present an independent validation and re-calibration of the PS1 photometry using…

Solar and Stellar Astrophysics · Physics 2022-03-30 Kai Xiao , Haibo Yuan

Systematic effects that limit the achievable sensitivity of current low-frequency radio telescopes to the 21 cm signal are among the foremost challenges in observational 21 cm cosmology. The standard approach to retrieving the 21 cm signal…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-23 S. Munshi , L. V. E. Koopmans , F. G. Mertens , A. R. Offringa , S. A. Brackenhoff , E. Ceccotti , J. K. Chege , L. Y. Gao , S. Ghosh , M. Mevius , S. Zaroubi

The measurement of atmospheric parameters is fundamental for scientific research using stellar spectra. The Chinese Space Station Telescope (CSST), scheduled to be launched in 2024, will provide researchers with hundreds of millions of…

Solar and Stellar Astrophysics · Physics 2024-08-21 JiaRui Rao , HaiLiang Chen , JianPing Xiong , LuQian Wang , YanJun Guo , JiaJia Li , Chao Liu , ZhanWen Han , XueFei Chen

We describe a new method of combining optical and infrared photometry to select Luminous Red Galaxies (LRGs) at redshifts $z > 0.6$. We explore this technique using a combination of optical photometry from CFHTLS and HST, infrared…

Astrophysics of Galaxies · Physics 2015-04-27 Abhishek Prakash , Timothy C. Licquia , Jeffrey A. Newman , Sandhya M. Rao

Cone Beam Computed Tomography (CBCT) finds diverse applications in medicine. Ensuring high image quality in CBCT scans is essential for accurate diagnosis and treatment delivery. Yet, the susceptibility of CBCT images to noise and artifacts…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Yunkui Pang , Yilin Liu , Xu Chen , Pew-Thian Yap , Jun Lian

The Telescope Array (TA) collaboration has measured the energy spectrum of ultra-high energy cosmic rays with primary energies above 1.6 x 10^(18) eV. This measurement is based upon four years of observation by the surface detector…

High Energy Astrophysical Phenomena · Physics 2013-04-12 T. Abu-Zayyad , R. Aida , M. Allen , R. Anderson , R. Azuma , E. Barcikowski , J. W. Belz , D. R. Bergman , S. A. Blake , R. Cady , B. G. Cheon , J. Chiba , M. Chikawa , E. J. Cho , W. R. Cho , H. Fujii , T. Fujii , T. Fukuda , M. Fukushima , W. Hanlon , K. Hayashi , Y. Hayashi , N. Hayashida , K. Hibino , K. Hiyama , K. Honda , T. Iguchi , D. Ikeda , K. Ikuta , N. Inoue , T. Ishii , R. Ishimori , D. Ivanov , S. Iwamoto , C. C. H. Jui , K. Kadota , F. Kakimoto , O. Kalashev , T. Kanbe , K. Kasahara , H. Kawai , S. Kawakami , S. Kawana , E. Kido , H. B. Kim , H. K. Kim , J. H. Kim , J. H. Kim , K. Kitamoto , S. Kitamura , Y. Kitamura , K. Kobayashi , Y. Kobayashi , Y. Kondo , K. Kuramoto , V. Kuzmin , Y. J. Kwon , J. Lan , S. I. Lim , S. Machida , K. Martens , T. Matsuda , T. Matsuura , T. Matsuyama , J. N. Matthews , M. Minamino , K. Miyata , Y. Murano , I. Myers , K. Nagasawa , S. Nagataki , T. Nakamura , S. W. Nam , T. Nonaka , S. Ogio , M. Ohnishi , H. Ohoka , K. Oki , D. Oku , T. Okuda , A. Oshima , S. Ozawa , I. H. Park , M. S. Pshirkov , D. C. Rodriguez , S. Y. Roh , G. Rubtsov , D. Ryu , H. Sagawa , N. Sakurai , A. L. Sampson , L. M. Scott , P. D. Shah , F. Shibata , T. Shibata , H. Shimodaira , B. K. Shin , J. I. Shin , T. Shirahama , J. D. Smith , P. Sokolsky , B. T. Stokes , S. R. Stratton , T. A. Stroman , S. Suzuki , Y. Takahashi , M. Takeda , A. Taketa , M. Takita , Y. Tameda , H. Tanaka , K. Tanaka , M. Tanaka , S. B. Thomas , G. B. Thomson , P. Tinyakov , I. Tkachev , H. Tokuno , T. Tomida , S. Troitsky , Y. Tsunesada , K. Tsutsumi , Y. Tsuyuguchi , Y. Uchihori , S. Udo , H. Ukai , G. Vasiloff , Y. Wada , T. Wong , M. Wood , Y. Yamakawa , R. Yamane , H. Yamaoka , K. Yamazaki , J. Yang , Y. Yoneda , S. Yoshida , H. Yoshii , X. Zhou , R. Zollinger , Z. Zundel

Improved statistics and mass-composition-sensitive observation are required to clarify the origin of ultra-high energy cosmic rays (UHECRs). Inevitably in the future, the UHECR observatories will have to be expanded due to the small flux;…

Instrumentation and Methods for Astrophysics · Physics 2019-03-06 Yuichiro Tameda , Takayuki Tomida , Mashu Yamamoto , Hirokazu Iwakura , Daisuke Ikeda , Katsuya Yamazaki

The main objective of the Cosmic-Ray Extremely Distributed Observatory (CREDO) is the detection and analysis of extended cosmic ray phenomena, so-called super-preshowers (SPS), using existing as well as new infrastructure (cosmic-ray…

Thermometric techniques with high accuracy, fast response speed and ease of implementation are desirable for the study of dynamic combustion environments, transient reacting flows, and non-equilibrium plasmas. Herein, single-shot…

Weak gravitational lensing is becoming a mature technique for constraining cosmological parameters, and future surveys will be able to constrain the dark energy equation of state $w$. When analyzing galaxy surveys, redshift information has…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-07 Andrea Petri , Morgan May , Zoltán Haiman

A major uncertainty in understanding the transport and feedback of cosmic-rays (CRs) within and beyond our Galaxy lies in the unknown CR scattering rates, which are primarily determined by wave-particle interaction at microscopic…

High Energy Astrophysical Phenomena · Physics 2022-04-06 Xue-Ning Bai

Photometric large scale structure (LSS) surveys probe the largest volumes in the Universe, but are inevitably limited by systematic uncertainties. Imperfect photometric calibration leads to biases in our measurements of the density fields…

Differential Chromatic Refraction (DCR) is caused by the wavelength dependence of our atmosphere's refractive index, which shifts the apparent positions of stars and galaxies and distorts their shapes depending on their spectral energy…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-24 Jaemyoung Jason Lee , Masao Sako , Richard Kessler , Alex I. Malz , The LSST Dark Energy Science Collaboration

In this third paper of a series on radio weak lensing for cosmology with the Square Kilometre Array, we scrutinise synergies between cosmic shear measurements in the radio and optical/near-IR bands for mitigating systematic effects. We…

Cosmology and Nongalactic Astrophysics · Physics 2018-09-19 Stefano Camera , Ian Harrison , Anna Bonaldi , Michael L. Brown

Chinese Spectral Radio Heliograph (CSRH) is an advanced aperture synthesis solar radio heliograph, developed by National Astronomical Observatories, Chinese Academy of Sciences independently. It consists of 100 reflector antennas, which are…

Instrumentation and Methods for Astrophysics · Physics 2015-11-11 Sha Li , Yihua Yan , Zhijun Chen , Wei Wang , Donghao Liu

We present a novel method for reconstructing weak lensing mass or convergence maps as a probe to study non-Gaussianities in the cosmic density field. While previous surveys have relied on a flat-sky approximation, the forthcoming stage IV…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-03 Vanshika Kansal

The 4MOST Cosmology Redshift Survey (CRS) will perform stringent cosmological tests via spectroscopic clustering measurements that will complement the best lensing, cosmic microwave background and other surveys in the southern hemisphere.…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-02 J. Richard , J. -P. Kneib , C. Blake , A. Raichoor , J. Comparat , T. Shanks , J. Sorce , M. Sahlén , C. Howlett , E. Tempel , R. McMahon , M. Bilicki , B. Roukema , J. Loveday , D. Pryer , T. Buchert , C. Zhao

Forthcoming astronomical imaging surveys will use weak gravitational lensing shear as a primary probe to study dark energy, with accuracy requirements at the 0.1% level. We present an implementation of the Metadetection shear measurement…

Instrumentation and Methods for Astrophysics · Physics 2023-05-16 Erin S. Sheldon , Matthew R. Becker , Michael Jarvis , Robert Armstrong , The LSST Dark Energy Science Collaboration

The High Energy cosmic-Radiation Detection (HERD) facility is a dedicated high energy astronomy and particle physics experiment planned to be installed on the Chinese space station, aiming to detect high-energy cosmic rays (GeV $\sim$ PeV)…

Instrumentation and Methods for Astrophysics · Physics 2024-12-30 Longkun Yu , Chenxing Zhang , Dongya Guo , Yaqing Liu , Wenxi Peng , Zhigang Wang , Bing Lu , Rui Qiao , Ke Gong , Jing Wang , Shuai Yang , Yongye Li

Standard cosmological weak lensing analyses using cosmic shear are inevitably sensitive to small-scale, non-linear clustering from low-redshift structures. The need to adequately model the clustering of matter on this non-linear regime,…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-25 Giulia Piccirilli , Matteo Zennaro , Carlos García-García , David Alonso