Astrophysics – Page 559 – Kavli Institute Pre-Print Publications

Ultrastable frequency reference at 1.56 μm using a CO molecular overtone transition with the noise immune cavity-enhanced optical heterodyne molecular spectroscopy method

Kavli Affiliate: Robert Byer | First 5 Authors: Shailendar Saraf, Paul Berceau, Alberto Stochino, Robert Byer, John Lipa | Summary: We report on an ultrastable molecular clock based on the interrogation of the 3{nu} rotational-vibrational combination band at 1563nm of carbon monoxide 12C16O. The laser stabilization scheme is based on frequency modulation (FM) saturation spectroscopy […]

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Dispersion Distance and the Matter Distribution of the Universe in Dispersion Space

Posted by klaurent June 4, 2015MIT

Kavli Affiliate: Kiyoshi Wesley Masui | First 5 Authors: Kiyoshi Wesley Masui, Kris Sigurdson, , , | Summary: We propose that "standard pings", brief broadband radio impulses, can be used to study the three-dimensional clustering of matter in the Universe even in the absence of redshift information. The dispersion of radio waves as they travel […]

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Thirty Meter Telescope International Observatory Detailed Science Case 2024

Posted by dbos May 5, 2015Peking

Kavli Affiliate: Subo Dong | First 5 Authors: Warren Skidmore, Bob Kirshner, David Andersen, Gelys Trancho, Scot Kleinman | Summary: The Thirty Meter Telescope (TMT) International Observatory (TIO) will be a revolutionary leap forward in astronomical observing capabilities, enabling us to address some of the most profound questions about the universe. From unraveling the mysteries […]

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Serendipitous discovery of a dying Giant Radio Galaxy associated with NGC 1534, using the Murchison Widefield Array

Posted by klaurent December 11, 2014MIT

Kavli Affiliate: Robert Goeke | First 5 Authors: Natasha Hurley-Walker, Melanie Johnston-Hollitt, Ron Ekers, Richard Hunstead, Elaine M. Sadler | Summary: Recent observations with the Murchison Widefield Array at 185~MHz have serendipitously unveiled a heretofore unknown giant and relatively nearby ($z = 0.0178$) radio galaxy associated with NGC,1534. The diffuse emission presented here is the […]

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GREAT3 results I: systematic errors in shear estimation and the impact of real galaxy morphology

Posted by klaurent December 4, 2014Stanford

Kavli Affiliate: Philip J. Marshall | First 5 Authors: Rachel Mandelbaum, Barnaby Rowe, Robert Armstrong, Deborah Bard, Emmanuel Bertin | Summary: We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, the third in a sequence of challenges for testing methods of inferring weak gravitational lensing shear distortions from simulated galaxy images. […]

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Modeling the Expected Performance of the REgolith X-ray Imaging Spectrometer (REXIS)

Posted by klaurent October 12, 2014MIT

Kavli Affiliate: Rebecca A. Masterson | First 5 Authors: Niraj K. Inamdar, Richard P. Binzel, Jae Sub Hong, Branden Allen, Jonathan Grindlay | Summary: OSIRIS-REx is the third spacecraft in the NASA New Frontiers Program and is planned for launch in 2016. OSIRIS-REx will orbit the near-Earth asteroid (101955) Bennu, characterize it, and return a […]

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Fifteen years of the Advanced CCD Imaging Spectrometer

Posted by klaurent July 24, 2014MIT

Kavli Affiliate: Peter G. Ford | First 5 Authors: Catherine E. Grant, Mark W. Bautz, Peter G. Ford, Paul P. Plucinsky, | Summary: As the Advanced CCD Imaging Spectrometer (ACIS) on the Chandra X-ray Observatory enters its fifteenth year of operation on orbit, it continues to perform well and produce spectacular scientific results. The response […]

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A framework for modeling the detailed optical response of thick, multiple segment, large format sensors for precision astronomy applications

Posted by klaurent July 21, 2014Stanford

Kavli Affiliate: Steven Kahn | First 5 Authors: Andrew Rasmussen, Pierre Antilogus, Pierre Astier, Chuck Claver, Peter Doherty | Summary: Near-future astronomical survey experiments, such as LSST, possess system requirements of unprecedented fidelity that span photometry, astrometry and shape transfer. Some of these requirements flow directly to the array of science imaging sensors at the […]

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Witten Index and Wall Crossing

Posted by klaurent July 9, 2014Tokyo

Kavli Affiliate: Kentaro Hori | First 5 Authors: Kentaro Hori, Heeyeon Kim, Piljin Yi, , | Summary: We compute the Witten index of one-dimensional gauged linear sigma models with at least ${mathcal N}=2$ supersymmetry. In the phase where the gauge group is broken to a finite group, the index is expressed as a certain residue […]

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The Heavy Photon Search Test Detector

Posted by klaurent June 24, 2014Stanford

Kavli Affiliate: Homer Neal | First 5 Authors: Marco Battaglieri, Sergey Boyarinov, Stephen Bueltmann, Volker Burkert, Andrea Celentano | Summary: The Heavy Photon Search (HPS), an experiment to search for a hidden sector photon in fixed target electroproduction, is preparing for installation at the Thomas Jefferson National Accelerator Facility (JLab) in the Fall of 2014. […]

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