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So far, most of the about 5700 exoplanets have been discovered mainly with radial velocity and transit methods. These techniques are sensitive to planets in close orbits, not being able to probe large star--planet separations. $\mu$-lensing…

天体物理仪器与方法 · 物理学 2025-01-15 Riccardo Claudi , Dino Mesa

We introduce CPISM, a simulation program developed for the Cool Planet Imaging Coronagraph (CPI-C) on the China Space Station Telescope (CSST). CPISM supports high-contrast exoplanet imaging by simulating observational conditions and…

天体物理仪器与方法 · 物理学 2026-03-17 Yi-Ming Zhu , Gang Zhao , Jiang-Pei Dou , Zhong-Hua Lv , Yi-Li Chen , Bo Ma , Zhao-Jun Yan , Jing Tang , Ran Li

The coronagraphic instrument (CGI) on the Wide-Field Infrared Survey Telescope (WFIRST) will demonstrate technologies and methods for high-contrast direct imaging and spectroscopy of exoplanet systems in reflected light, including…

天体物理仪器与方法 · 物理学 2018-07-17 Ewan S. Douglas , Ashley K. Carlton , Kerri L. Cahoy , N. Jeremy Kasdin , Margaret Turnbull , Bruce Macintosh

NIRCam and MIRI coronagraphy have successfully demonstrated the ability to directly image young sub-Jupiter mass and mature gas-giant exoplanets. However, these modes struggle to reach the sensitivities needed to find the population of cold…

WFIRST-CGI is a NASA technology demonstration mission that is charged with demonstrating key technologies for future exo-Earth imaging missions in space. In the process, it will obtain images and low-resolution spectra of a handful to a…

地球与行星天体物理 · 物理学 2019-04-04 Brianna Lacy , David Shlivko , Adam Burrows

The Roman Coronagraph's capabilities in the faint star, small IWA limit has enormous scientific (programmatic) impacts. Testing its performance in this limit provides a first look at challenges that may be encountered with the Habitable…

天体物理仪器与方法 · 物理学 2025-12-16 Thayne Currie , Yiting Li , Brianna Lacy , Mona El Morsy , Masayuki Kuzuhara , Naoshi Murakami , Danielle Bovie

The World Space Observatory for Ultraviolet (WSO-UV) is an orbital optical telescope with a 1.7 m-diameter primary mirror currently under development. The WSO-UV is aimed to operate in the 115-310 nm UV spectral range. Its two major science…

The Exoplanet Imaging Data Challenge is a community-wide effort meant to offer a platform for a fair and common comparison of image processing methods designed for exoplanet direct detection. For this purpose, it gathers on a dedicated…

Space-based stellar coronagraph instruments aim to directly image exoplanets that are a fraction of an arcsecond separation and ten billion times fainter than their host star. To achieve this, one or more deformable mirrors (DMs) are used…

The Roman Coronagraph is expected to perform its high-order wavefront sensing and control (HOWFSC) with a ground-in-the-loop scheme due to the computational complexity of the Electric-Field-Conjugation (EFC) algorithm. This scheme provides…

天体物理仪器与方法 · 物理学 2023-09-12 Kian Milani , Ewan Douglas , Sebastiaan Haffert , Kyle Van Gorkom

Observing Earth-like exoplanets orbiting within the habitable zone of Sun-like stars and studying their atmospheres in reflected starlight requires contrasts of $\sim1\mathrm{e}{-10}$ in the visible. At such high contrast, starlight…

地球与行星天体物理 · 物理学 2022-11-09 Jens Kammerer , Christopher C. Stark , Kevin J. Ludwick , Roser Juanola-Parramon , Bijan Nemati

Imaging faint objects, such as exoplanets or disks, around nearby stars is extremely challenging because host star images are dominated by the telescope diffraction pattern. Using a coronagraph is an efficient solution for removing…

The baseline contrast floor from the Roman Coronagraph's High-Order Wavefront Sensing and Control strategy likely degrades over the course of time, requiring periodic recalibration of the dark hole. Here, we propose to consider spatial…

天体物理仪器与方法 · 物理学 2025-09-12 Thayne Currie , Olivier Guyon , Ruslan Belikov , Dan Sirbu , Mona El Morsy

The next generation of ground- and space-based observatories will enable direct imaging and characterization of cold, mature planets through thermal emission and, for the first time, reflected light detection. Known RV and astrometrically…

地球与行星天体物理 · 物理学 2025-09-09 Logan A. Pearce , Jared R. Males , Mary Anne Limbach

The Coronagraph Instrument (CGI) for NASA's Wide Field Infrared Survey Telescope (WFIRST) will constitute a dramatic step forward for high-contrast imaging, integral field spectroscopy, and polarimetry of exoplanets and circumstellar disks,…

One of the top remaining science challenges in astronomical optics is the direct imaging and characterization of extrasolar planets and planetary systems. Directly imaging exoplanets from ground-based observatories requires combining…

天体物理仪器与方法 · 物理学 2021-10-04 Alexander T Rodack , Richard A Frazin , Jared R Males , Olivier Guyon

We explore the science power of space telescopes used to estimate the true masses of known radial-velocity exoplanets by means of astrometry on direct images. We translate a desired mass accuracy (+/10% in our example) into a minimum goal…

天体物理仪器与方法 · 物理学 2015-06-11 Robert A. Brown

We present an overview of the EXoplanetary Circumstellar Environments and Disk Explorer (EXCEDE), selected by NASA for technology development and maturation. EXCEDE will study the formation, evolution and architectures of exoplanetary…

天体物理仪器与方法 · 物理学 2015-06-11 Olivier Guyon , Glenn Schneider , Ruslan Belikov , Domenick J. Tenerelli