Arm-Locking with the GRACE Follow-On Laser Ranging Interferometer
Arm-locking is a technique for stabilizing the frequency of a laser in an inter-spacecraft interferometer by using the spacecraft separation as the frequency reference. A candidate technique for future...
View ArticleA method to directly image exoplanets in multi-star systems such as...
Direct imaging of extra-solar planets is now a reality, especially with the deployment and commissioning of the first generation of specialized ground-based instruments such as the Gemini Planet Imager...
View ArticleSpace telescope design to directly image the habitable zone of Alpha Centauri
The scientific interest in directly image and identifying Earth-like planets within the Habitable Zone (HZ) around nearby stars is driving the design of specialized direct imaging mission such as...
View ArticleHow to Directly Image a Habitable Planet Around Alpha Centauri with a...
Several mission concepts are being studied to directly image planets around nearby stars. It is commonly thought that directly imaging a potentially habitable exoplanet around a Sun-like star requires...
View ArticleOrbital Differential Imaging: A New High-Contrast Post-Processing Technique...
Current post-processing techniques in high contrast imaging depend on some source of diversity between the exoplanet signal and the residual star light at that location. The two main techniques are...
View ArticleEffect of data gaps on correlation dimension computed from light curves of...
Observational data, especially astrophysical data, is often limited by gaps in data that arises due to lack of observations for a variety of reasons. Such inadvertent gaps are usually smoothed over...
View ArticleDetecting gravitational-wave transients at five sigma: a hierarchical...
As second-generation gravitational-wave detectors prepare to analyze data at unprecedented sensitivity, there is great interest in searches for unmodeled transients, commonly called bursts. Significant...
View ArticleMeasuring the Direction and Angular Velocity of a Black Hole Accretion Disk...
We show that interferometry can be applied to study irregular, rapidly rotating structures, as are expected in the turbulent accretion flow near a black hole. Specifically, we analyze the lagged...
View ArticlePlanck 2015 results. IV. Low Frequency Instrument beams and window functions...
This paper presents the characterization of the in-flight beams, the beam window functions, and the associated uncertainties for the Planck Low Frequency Instrument (LFI). The structure of the paper is...
View ArticleSNIa detection in the SNLS photometric analysis using Morphological Component...
Detection of supernovae and, more generally, of transient events in large surveys can provide numerous false detections.In the case of a deferred processing of survey images, this implies...
View ArticleAstronomy and Astrophysics in the Philosophy of Science [Cross-Listing]
This article looks at philosophical aspects and questions that modern astrophysical research gives rise to. Other than cosmology, astrophysics particularly deals with understanding phenomena and...
View ArticleStudying stellar halos with future facilities
Stellar halos around galaxies retain fundamental evidence of the processes which lead to their build up. Sophisticated models of galaxy formation in a cosmological context yield quantitative...
View ArticleLee Sang Gak Telescope (LSGT): A Remotely Operated Robotic Telescope for...
We introduce the Lee Sang Gak Telescope (LSGT), a remotely operated, robotic 0.43-meter telescope. The telescope was installed at the Siding Spring Observatory, Australia, in 2014 October, to secure...
View ArticleOn the possibility to use semiconductive hybrid pixel detectors for study of...
The scientific apparatus "Gamma-400" designed for study of hadron and electromagnetic components of cosmic rays will be launched to an elliptic orbit with the apogee of about 300 000 km and the perigee...
View ArticleUsing inpainting to construct accurate cut-sky CMB estimators
The direct evaluation of manifestly optimal, cut-sky CMB power spectrum and bispectrum estimators is numerically very costly, due to the presence of inverse-covariance filtering operations. This...
View ArticleAdvanced ACTPol Cryogenic Detector Arrays and Readout
Advanced ACTPol is a polarization-sensitive upgrade for the 6 m aperture Atacama Cosmology Telescope (ACT), adding new frequencies and increasing sensitivity over the previous ACTPol receiver. In 2016,...
View ArticleAdvanced Data Visualization in Astrophysics: the X3D Pathway
Most modern astrophysical datasets are multi-dimensional; a characteristic that can nowadays generally be conserved and exploited scientifically during the data reduction/simulation and analysis...
View ArticleSPH Methods in the Modelling of Compact Objects [Replacement]
We review the current status of compact object simulations that are based on the Smooth Particle Hydrodynamics (SPH) method. The first main part of this review is dedicated to SPH as a numerical...
View ArticleA Transmission-Filter Coronagraph: Design and Test
We propose a transmission-filter coronagraph for direct imaging of Jupiter-like exoplanets with ground-based telescopes. The coronagraph is based on a transmission filter that consists of finite number...
View ArticleFocal plane wave-front sensing algorithm for high-contrast imaging
High-contrast imaging provided by a coronagraph is critical for the direction imaging of the Earth-like planet orbiting its bright parent star. A major limitation for such direct imaging is the speckle...
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