70 citations · 275 across the 23 of their papers we have counts for
25 papers
Astrometric detection of rocky exoplanets from inexpensive space platforms
Peter G. Tuthill, George Ayad, Donald G. Dansereau +18
The detection of orbiting exoplanets by way of astrometric monitoring of the host star to reveal gravitationally induced reflex motion requires extreme precision and measurement st…
Spectral Selection in Sphere-Constrained Flows Generated by Polynomials of the Dirichlet Laplacian
Javed Hussain
Let be a bounded smooth domain and let be the positive Dirichlet Laplacian on . For a real polynomial with positive leading coefficient, w…
The final design of GMagAO-X: the wavefront sensing and control (WFS&C) architecture of GMagAO-X
Sebastiaan Y. Haffert, Jared R. Males, Laird M. Close +10
The Giant Magellan Adaptive Optics eXtreme (GMagAO-X) instrument has now been selected as an official part of the Giant Magellan Telescope's (GMT) instrument suite. The instrument…
Quantum-optimal instruments for high-contrast imaging with multi-plane light converters
Sebastiaan Y. Haffert, Yinzi Xin, Rico Landman
Spatial Mode Demultiplexers (SPADE) are devices that split an incoming wavefront into a particular set of electric field modes. SPADEs have been shown to be quantum-optimal for man…
The Roman Coronagraph Community Participation Program: pre-launch reference star list and impact of reference star properties on post-processing performance
Justin Hom, Schuyler G. Wolff, Jessica Gersh-Range +51
The upcoming Roman Coronagraph will be the first high-contrast instrument in space capable of high-order wavefront sensing and control technologies, a critical technology demonstra…
Optimal mode-sorting coronagraphy: limits of single-moded measurements for the Habitable Worlds Observatory
Yinzi Xin, Sebastiaan Haffert, Rico Landman
Conventional coronagraph architectures struggle to reach the theoretical limit of exoplanet detection at close working angles. Spatial mode-sorting is capable of reaching the theor…
Upper limits on exosatellites around Pictoris b
M. A. Kenworthy, R. Landman, A. Vanderburg +8
Pictoris b is one of the closest known directly-imaged gas giant exoplanets with an orbit that is almost edge-on to our line of sight, making it an ideal target for radial velo…
WIde Separation Planets In Time (WISPIT): A Gap-clearing Planet in a Multi-ringed Disk around the Young Solar-type Star WISPIT 2
Richelle F. van Capelleveen, Christian Ginski, Matthew A. Kenworthy +17
In the past decades several thousand exoplanet systems have been discovered around evolved, main-sequence stars, revealing a wide diversity in their architectures. To understand ho…
WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1
Richelle F. van Capelleveen, Matthew A. Kenworthy, Christian Ginski +7
Wide separation gas giant planets present a challenge to current planet formation theories, and the detection and characterisation of these systems enables us to constrain their fo…
Peering above the clouds of the warm Neptune GJ 436b with CRIRES+
Natalie Grasser, Ignas A. G. Snellen, Rico Landman +2
Exoplanets with masses between Earth and Neptune are amongst the most commonly observed, yet their properties are poorly constrained. Their transmission spectra are often featurele…
Into the red: an M-band study of the chemistry and rotation of Pictoris b at high spectral resolution
Luke T. Parker, Jayne L. Birkby, Rico Landman +7
High-resolution cross-correlation spectroscopy (HRCCS) combined with adaptive optics has been enormously successful in advancing our knowledge of exoplanet atmospheres, from chemis…
Revealing HO dissociation in WASP-76~b through combined high- and low-resolution transmission spectroscopy
Siddharth Gandhi, Rico Landman, Ignas Snellen +3
Numerous chemical constraints have been possible for exoplanetary atmospheres thanks to high-resolution spectroscopy (HRS) from ground-based facilities as well as low-resolution sp…
Making the unmodulated Pyramid wavefront sensor smart. Closed-loop demonstration of neural network wavefront reconstruction with MagAO-X
Rico Landman, Sebastiaan Haffert, Jared Males +12
Almost all current and future high-contrast imaging instruments will use a Pyramid wavefront sensor (PWFS) as a primary or secondary wavefront sensor. The main issue with the PWFS…
Pictoris b through the eyes of the upgraded CRIRES+
Rico Landman, Tomas Stolker, Ignas Snellen +8
Context: High-resolution spectrographs fed by adaptive optics (AO) provide a unique opportunity to characterize directly imaged exoplanets. Observations with such instruments allow…
Integrated photonic-based coronagraphic systems for future space telescopes
Niyati Desai, Lorenzo König, Emiel Por +38
The detection and characterization of Earth-like exoplanets around Sun-like stars is a primary science motivation for the Habitable Worlds Observatory. However, the current best te…
Tempestas ex machina: A review of machine learning methods for wavefront control
J. Fowler, Rico Landman
As we look to the next generation of adaptive optics systems, now is the time to develop and explore the technologies that will allow us to image rocky Earth-like planets; wavefron…
Visible extreme adaptive optics on extremely large telescopes: Towards detecting oxygen in Proxima Centauri b and analogs
J. Fowler, Sebastiaan Y. Haffert, Maaike A. M. van Kooten +38
Looking to the future of exo-Earth imaging from the ground, core technology developments are required in visible extreme adaptive optics (ExAO) to enable the observation of atmosph…
Chasing rainbows and ocean glints: Inner working angle constraints for the Habitable Worlds Observatory
Sophia R. Vaughan, Timothy D. Gebhard, Kimberly Bott +41
NASA is engaged in planning for a Habitable Worlds Observatory (HabWorlds), a coronagraphic space mission to detect rocky planets in habitable zones and establish their habitabilit…
Trade-offs in high-contrast integral field spectroscopy for exoplanet detection and characterisation: Young gas giants in emission
Rico Landman, Ignas Snellen, Cristoph Keller +3
Context: Combining high-contrast imaging with medium- or high-resolution integral field spectroscopy has the potential to boost the detection rate of exoplanets, especially at smal…
Retrieval survey of metals in six ultra-hot Jupiters: Trends in chemistry, rain-out, ionisation and atmospheric dynamics
Siddharth Gandhi, Aurora Kesseli, Yapeng Zhang +9
Ground-based high-resolution spectroscopy (HRS) has detected numerous chemical species and atmospheric dynamics in exoplanets, most notably ultra-hot Jupiters (UHJs). However, quan…
Joint optimization of wavefront sensing and reconstruction with automatic differentiation
Rico Landman, Christoph Keller, Emiel H. Por +3
High-contrast imaging instruments need extreme wavefront control to directly image exoplanets. This requires highly sensitive wavefront sensors which optimally make use of the avai…
Detection of OH in the ultra-hot Jupiter WASP-76b
Rico Landman, Alejandro Sànchez-López, Paul Mollière +3
Ultra-hot Jupiters have dayside temperatures at which most molecules are expected to thermally dissociate. The dissociation of water vapour results in the production of the hydroxy…
Self-optimizing adaptive optics control with Reinforcement Learning for high-contrast imaging
Rico Landman, Sebastiaan Y. Haffert, Vikram M. Radhakrishnan +1
Current and future high-contrast imaging instruments require extreme adaptive optics (XAO) systems to reach contrasts necessary to directly image exoplanets. Telescope vibrations a…
Self-optimizing adaptive optics control with Reinforcement Learning
Rico Landman, Sebastiaan Y. Haffert, Vikram M. Radhakrishnan +1
Current and future high-contrast imaging instruments require extreme Adaptive Optics (XAO) systems to reach contrasts necessary to directly image exoplanets. Telescope vibrations a…