Photometry, Centroid and Point-Spread Function Measurements in the LSST Camera Focal Plane Using Artificial Stars

Posted by dbos Stanford

Kavli Affiliate: Aaron Roodman | First 5 Authors: Johnny H. Esteves, Yousuke Utsumi, Adam Snyder, Theo Schutt, Alex Broughton | Summary: The Vera C. Rubin Observatory’s LSST Camera (LSSTCam) pixel response has been characterized using laboratory measurements with a grid of artificial stars. We quantify the contributions to photometry, centroid, point-spread function size, and shape […]


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On the detectability of strong lensing in near-infrared surveys

Posted by klaurent Stanford

Kavli Affiliate: Philip Marshall | Summary:We present new lensing frequency estimates for existing and forthcoming deep near-infrared surveys, including those from JWST and VISTA. The estimates are based on the JAdes extraGalactic Ultradeep Artificial Realisations (JAGUAR) galaxy catalogue accounting for the full photometry and morphologies for each galaxy. Due to the limited area of the […]


Continue.. On the detectability of strong lensing in near-infrared surveys

On the detectability of strong lensing in near-infrared surveys

Posted by klaurent Stanford

Kavli Affiliate: Philip J. Marshall | First 5 Authors: Philip Holloway, Aprajita Verma, Philip J. Marshall, Anupreeta More, Matthias Tecza | Summary: We present new lensing frequency estimates for existing and forthcoming deep near-infrared surveys, including those from JWST and VISTA. The estimates are based on the JAdes extraGalactic Ultradeep Artificial Realisations (JAGUAR) galaxy catalogue […]


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Lack of near-sightedness principle in non-Hermitian systems

Posted by dbos Delft

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: Helene Spring, Viktor Könye, Anton R. Akhmerov, Ion Cosma Fulga, | Summary: The non-Hermitian skin effect is a phenomenon in which an extensive number of states accumulates at the boundaries of a system. It has been associated to nontrivial topology, with nonzero bulk invariants predicting its […]


Continue.. Lack of near-sightedness principle in non-Hermitian systems

Lack of near-sightedness principle in non-Hermitian systems

Posted by dbos Delft

Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: Helene Spring, Viktor Könye, Anton R. Akhmerov, Ion Cosma Fulga, | Summary: The non-Hermitian skin effect is a phenomenon in which an extensive number of states accumulates at the boundaries of a system. It has been associated to nontrivial topology, with nonzero bulk invariants predicting its […]


Continue.. Lack of near-sightedness principle in non-Hermitian systems

Survey of X-rays from Massive Stars Observed at High Spectral Resolution with Chandra

Posted by klaurent MIT

Kavli Affiliate: David Huenemoerder | Summary:Identifying trends between observational data and the range of physical parameters of massive stars is a critical step to the still-elusive full understanding of the source, structure, and evolution of X-ray emission from the stellar winds, requiring a substantial sample size and systematic analysis methods. The emphChandra data archive as […]


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Survey of X-rays from Massive Stars Observed at High Spectral Resolution with Chandra

Posted by klaurent MIT

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: Pragati Pradhan, David P. Huenemoerder, Richard Ignace, Joy S. Nichols, A. M. T. Pollock | Summary: Identifying trends between observational data and the range of physical parameters of massive stars is a critical step to the still-elusive full understanding of the source, structure, and evolution of […]


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Supermassive Primordial Black Holes From Inflation

Posted by Chicago

Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Dan Hooper, Aurora Ireland, Gordan Krnjaic, Albert Stebbins, | Summary: There is controversy surrounding the origin and evolution of our universe’s largest supermassive black holes (SMBHs). In this study, we consider the possibility that some of these black holes formed from the direct collapse of primordial density […]


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Supermassive Primordial Black Holes From Inflation

Posted by Chicago

Kavli Affiliate: Albert Stebbins | First 5 Authors: Dan Hooper, Aurora Ireland, Gordan Krnjaic, Albert Stebbins, | Summary: There is controversy surrounding the origin and evolution of our universe’s largest supermassive black holes (SMBHs). In this study, we consider the possibility that some of these black holes formed from the direct collapse of primordial density […]


Continue.. Supermassive Primordial Black Holes From Inflation

Supermassive Primordial Black Holes From Inflation

Posted by Chicago

Kavli Affiliate: Albert Stebbins | First 5 Authors: Dan Hooper, Aurora Ireland, Gordan Krnjaic, Albert Stebbins, | Summary: There is controversy surrounding the origin and evolution of our universe’s largest supermassive black holes (SMBHs). In this study, we consider the possibility that some of these black holes formed from the direct collapse of primordial density […]


Continue.. Supermassive Primordial Black Holes From Inflation