Explanipedia

The Utility of Antiplatelet Assay-Guided Individualized Dual Antiplatelet Therapy in Carotid Artery Stenting for Unstable Plaques Open

Soojong Pak, Shigeta Miyake, Osamu Masuo, Kana Takase, Yoshiaki Tetsuo , et al. · 2025

VerifyNow-guided personalization of antiplatelet therapy is a safe and may have the potential to reduce periprocedural ischemic complications in CAS, particularly in patients with unstable plaques. Further multicenter prospective studies a…

Spiral-phase-contrast imaging based on a linear astigmatism-free three-mirror system for space optics applications Open

Sunwoo Lee, Ki‐Su Park, Seunghyuk Chang, Changgon Kim, Dohoon Kim , et al. · 2025

We propose a spiral-phase-contrast imaging system for space optics by integrating a linear astigmatism-free three-mirror system (LAF-TMS) with a spiral phase plate (SPP) in a 4f configuration. The LAF-TMS enables unobscured, off-axis refle…

10 Years of Archival High-resolution NIR Spectra: The Raw and Reduced IGRINS Spectral Archive (RRISA) Open

Erica Sawczynec, Kyle Kaplan, Gregory N. Mace, Jae‐Joon Lee, D. T. Jaffe , et al. · 2025

The Immersion GRating INfrared Spectrometer (IGRINS) is a compact, high-resolution ( R ∼ 45,000) near-infrared spectrograph spanning 1.45–2.45 μ m in a single exposure. We introduce the Raw and Reduced IGRINS Spectral Archive (RRISA), whic…

The SDSS-V Local Volume Mapper Telescope System Open

Tom Herbst, Peter Bizenberger, Guillermo A. Blanc, Florian Briegel, Niv Drory , et al. · 2024

This paper presents the Local Volume Mapper (LVM) telescope system. LVM is one of three surveys that form the fifth generation of the Sloan Digital Sky Survey (SDSS-V), and it employs a coordinated network of four, 16 cm diameter telescope…

The magnetic field in quiescent star-forming filament G16.96+0.27 Open

Qilao Gu, Tie Liu, Zhi-Qiang Shen, J. Montillaud, M. Juvela , et al. · 2024

We present 850 μm thermal dust polarization observations with a resolution of 14.4"(~ 0.13 pc) towards an infrared dark cloud G16.96+0.27 using JCMT/POL-2. The average magnetic field orientation, which roughly agrees with the larger-scale …

Wavefront-corrected high-intensity vortex beams exceeding 1020 W/cm2 Open

Sunwoo Lee, Jin Woo Yoon, Jae Hee Sung, Seong Ku Lee, Seung Yeon Kim , et al. · 2024

The use of vortex laser beams has increased in various areas of optics and photonics, necessitating enhanced beam quality for wide usage. In the field of high-power lasers, a range of methods to implement vortex laser beams has been propos…

Generation of wavelength- and orbital angular momentum-tunable extreme-ultraviolet vortex beams using a spiral phase mirror Open

Sunwoo Lee, Dong Uk Kim, Ji Yong Bae, Ilkyu Han, Sangwon Hyun , et al. · 2024

Telescope control software and proto-model siderostat for the SDSS-V Local Volume Mapper Open

Hojae Ahn, Florian Briegel, Jimin Han, Mingyu Jeon, Thomas Herbst , et al. · 2024

The fifth Sloan Digital Sky Survey (SDSS-V) Local Volume Mapper (LVM) is a wide-field integral field unit (IFU) survey that uses an array of four 160 mm fixed telescopes with siderostats to minimize the number of moving parts. Individual t…

Decentralised ECG monitoring for drug-resistant TB patients in ambulatory settings Open

M. Mbenga, Andrii Slyzkyi, Veriko Mirtskhulava, Soojong Pak, Agnes Gebhard , et al. · 2024

Maunakea Spectroscopic Explorer exposure time calculator for end-to-end simulator: to optimizing spectrograph design and observing simulation Open

Tae-Geun Ji, Jennifer Sobeck, Changgon Kim, Hojae Ahn, Mingyeong Yang , et al. · 2024

The Maunakea Spectroscopic Explorer (MSE) project will provide multi-object\nspectroscopy in the optical and near-infrared bands using an 11.25-m aperture\ntelescope, repurposing the original Canada-France-Hawaii Telescope (CFHT) site.\nMS…

Generation of Wavelength- and Orbital Angular Momentum-Tunable Extreme-Ultraviolet Vortex Beams Using a Spiral Phase Mirror Open

Sunwoo Lee, Dong Uk Kim, Ji Yong Bae, Ilkyu Han, Sangwon Hyun , et al. · 2024

Generation of Wavelength- and Orbital Angular Momentum-Tunable Extreme-Ultraviolet Vortex Beams Using a Spiral Phase Mirror Open

Sunwoo Lee, Dong Uk Kim, Ji Yong Bae, Ilkyu Han, Sangwon Hyun , et al. · 2024

Spiral-phase-objective for a compact spiral-phase-contrast microscopy Open

Dong‐Ho Lee, Sunwoo Lee, Ji Yong Bae, Hwan Hur, Sangwon Hyun , et al. · 2023

Spiral-phase-contrast imaging, which utilizes a spiral phase optical element, has proven to be effective in enhancing various aspects of imaging, such as edge contrast and shadow imaging. Typically, the implementation of spiral-phase-contr…

The igrins yso survey. i. stellar parameters of pre-main-sequence stars in taurus- auriga Open

Ricardo López–Valdivia, Kimberly R. Sokal, Gregory N. Mace, Benjamin Kidder, Maryam Hussaini , et al. · 2023

We present fundamental parameters for 110 canonical K- and M-type (1.3-0.13Me) Taurus-Auriga young stellar objects (YSOs). The analysis produces a simultaneous determination of effective temperature (Teff), surface gravity (log g), magneti…

The Infrared Medium-deep Survey. IX. Discovery of Two New z ∼ 6 Quasars and Space Density Down to M 1450 ∼ −23.5 mag Open

Yongjung Kim, Myungshin Im, Yiseul Jeon, Minjin Kim, Linhua Jiang , et al. · 2022

We present the result of the Infrared Medium-deep Survey (IMS) z ∼ 6 quasar survey, using the combination of the IMS near-infrared images and the Canada–France–Hawaii Telescope Legacy Survey optical images. The traditional color selection …

The Infrared Medium-deep Survey. IX. Discovery of Two New $z\sim6$ Quasars and Space Density down to $M_{1450}\sim-23.5$ mag Open

Yongjung Kim, Im Myungshin, Jeon Yiseul, Minjin Kim, Linhua Jiang , et al. · 2022

We present the result of the Infrared Medium-deep Survey (IMS) $z\sim6$ quasar survey, using the combination of the IMS near-infrared images and the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) optical images. The traditional colo…

Wavelength-tunable spiral-phase-contrast imaging Open

Dong‐Ho Lee, Sunwoo Lee, Woo-Jong Yeo, Seok Kyung Jeong, Minwoo Jeon , et al. · 2022

Wavelength-tunable spiral-phase-contrast (SPC) imaging was experimentally accomplished in the visible wavelengths spanning a broad bandwidth of ∼200 nm based on a single off-axis spiral phase mirror (OSPM). By the rotation of an OSPM, whic…

Parametric Mid-Spatial Frequency Surface Error Synthesis Open

Timothy Hefferan, Logan Graves, Isaac Trumper, Soojong Pak, Daewook Kim · 2021

Standard mid-spatial frequency tooling mark errors were parameterized into a series of characteristic features and systematically investigated. Diffraction encircled and ensquared energy radii at the 90% levels from an unpowered optical su…

Proposal of Joint Planning Working Group for Development of Korean Space Telescopes Open

Jeong-Yeol Han, Woojin Park, Youra Jun, Jihun Kim, Yunjong Kim , et al. · 2021

In order to satisfy the intellectual curiosity of mankind to explore the unknown, National Aeronautics and Space Administration (NASA) in the United States and European Space Agency (ESA) in Europe are embarking on various R&D under the mo…

The IGRINS YSO Survey. I. Stellar Parameters of Pre-main-sequence Stars in Taurus-Auriga Open

Ricardo López–Valdivia, Kimberly R. Sokal, Gregory N. Mace, Benjamin Kidder, Maryam Hussaini , et al. · 2021

We present fundamental parameters for 110 canonical K - and M -type (1.3−0.13 M ⊙ ) Taurus-Auriga young stellar objects (YSOs). The analysis produces a simultaneous determination of effective temperature ( T eff ), surface gravity (log g )…

The SDSS-V local volume mapper telescope system Open

Tom Herbst, Pavaman Bilgi, Peter Bizenberger, Guillermo A. Blanc, Florian Briegel , et al. · 2020

The Sloan Digital Sky Survey V (SDSS-V) is an all-sky spectroscopic survey of <6 million objects, designed to decode the history of the Milky Way, reveal the inner workings of stars, investigate the origin of solar systems, and track the g…

Flight model characterization of the wide-field off-axis telescope for the MATS satellite Open

Woojin Park, Arvid Hammar, Soojong Pak, Seunghyuk Chang, J. Gumbel , et al. · 2020

We present optical characterization, calibration, and performance tests of the Mesospheric Airglow/Aerosol Tomography Spectroscopy (MATS) satellite, which for the first time, to the best of our knowledge, for a satellite, applies a linear-…

The MATS satellite mission – gravity wave studies by Mesospheric Airglow/Aerosol Tomography and Spectroscopy Open

J. Gumbel, Linda Megner, Ole Martin Christensen, Nickolay Ivchenko, D. Murtagh , et al. · 2020

Global three-dimensional data are a key to understanding gravity waves in the mesosphere and lower thermosphere. MATS (Mesospheric Airglow/Aerosol Tomography and Spectroscopy) is a new Swedish satellite mission that addresses this need. It…

Intensive Monitoring Survey of Nearby Galaxies (IMSNG) Open

Myungshin Im, Changsu Choi, Sungyong Hwang, Gu Lim, Joonho Kim , et al. · 2019

Intensive Monitoring Survey of Nearby Galaxies (IMSNG) is a high cadence observation program monitoring nearby galaxies with high probabilities of hosting supernovae (SNe). IMSNG aims to constrain the SN explosion mechanism by inferring si…

Intensive Monitoring Survey of Nearby Galaxies (IMSNG) Open

Myungshin Im, Changsu Choi, Sungyong Hwang, Gu Lim, Joonho Kim , et al. · 2019

Intensive Monitoring Survey of Nearby Galaxies (IMSNG) is a high cadence observation program monitoring nearby galaxies with high probabilities of hosting supernovae (SNe). IMSNG aims to constrain the SN explosion mechanism by inferring si…

The Infrared Medium-deep Survey. VI. Discovery of Faint Quasars at z ∼ 5 with a Medium-band-based Approach Open

Yongjung Kim, Myungshin Im, Yiseul Jeon, Minjin Kim, Soojong Pak , et al. · 2019

The faint quasars with M 1450 > −24 mag are known to hold the key to the determination of the ultraviolet emissivity for the cosmic reionization. But only a few have been identified so far because of the limitations on the survey data. Her…

The MATS Satellite Mission – Gravity Waves Studies by Mesospheric Airglow/Aerosol Tomography and Spectroscopy Open

J. Gumbel, Linda Megner, Ole Martin Christensen, Seunghyuk Chang, Joachim Dillner , et al. · 2018

Global three-dimensional data are a key to understanding gravity wave interactions in the mesosphere and lower thermosphere. MATS (Mesospheric Airglow/Aerosol Tomography and Spectroscopy) is a new Swedish satellite mission that addresses t…

THE INFRARED MEDIUM-DEEP SURVEY. V. A NEW SELECTION STRATEGY FOR QUASARS AT z > 5 BASED ON MEDIUM-BAND OBSERVATIONS WITH SQUEAN Open

Yiseul Jeon, Myungshin Im, Soojong Pak, Minhee Hyun, Sanghyuk Kim , et al. · 2016

Multiple color selection techniques are successful in identifying quasars from wide-field broadband imaging survey data. Among the quasars that have been discovered so far, however, there is a redshift gap at 5 ≲ z ≲ 5.7 due to the limitat…

The Infrared Medium-Deep Survey. V. A New Selection Strategy for Quasars at z > 5 based on Medium-Band Observation with SQUEAN Open

Yiseul Jeon, Myungshin Im, Soojong Pak, Minhee Hyun, Sanghyuk Kim , et al. · 2016

Multiple color selection techniques have been successful in identifying quasars from wide-field broad-band imaging survey data. Among the quasars that have been discovered so far, however, there is a redshift gap at $5 \lesssim {\rm z} \le…

Variability At The Edge: Optical Near/IR Rapid-Cadence Monitoring Of Newly Outbursting FU Orionis Object HBC 722 Open

Joel D. Green, Paul Robertson, Giseon Baek, D. Pooley, Soojong Pak , et al. · 2016

We present the detection of day-timescale periodic variability in the r-band lightcurve of newly outbursting FU Orionis-type object HBC 722, taken from >42 nights of observation with the CQUEAN instrument on the McDonald Observatory 2.1 m …

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