Astrophysics – Page 238 – Kavli Institute Pre-Print Publications

Small-scale signatures of primordial non-Gaussianity in k-Nearest Neighbour cumulative distribution functions

Posted by klaurent September 26, 2023October 9, 2023Stanford

Kavli Affiliate: Tom Abel | First 5 Authors: William R. Coulton, Tom Abel, Arka Banerjee, , | Summary: Searches for primordial non-Gaussianity in cosmological perturbations are a key means of revealing novel primordial physics. However, robustly extracting signatures of primordial non-Gaussianity from non-linear scales of the late-time Universe is an open problem. In this paper, […]

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TOI-199 b: A well-characterized 100-day transiting warm giant planet with TTVs seen from Antarctica

Posted by dbos September 26, 2023MIT

Kavli Affiliate: Robert F. Goeke | First 5 Authors: Melissa J. Hobson, Trifon Trifonov, Thomas Henning, Andrés Jordán, Felipe Rojas | Summary: We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS photometry and confirmed using ground-based photometry from ASTEP in Antarctica […]

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TOI-199 b: A well-characterized 100-day transiting warm giant planet with TTVs seen from Antarctica

Posted by dbos September 26, 2023MIT

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Manifestly covariant variational principle for gauge theories of gravity

Posted by klaurent September 26, 2023October 9, 2023Cambridge

Kavli Affiliate: Anthony Lasenby | First 5 Authors: Michael Hobson, Anthony Lasenby, Will Barker, , | Summary: A variational principle for gauge theories of gravity is presented, which maintains manifest covariance under the symmetries to which the action is invariant, throughout the calculation of the equations of motion and conservation laws. This is performed by […]

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Clump-scale Gas Infall in High-mass Star Formation: a Multi-transition View with JCMT HCN (4–3) Mapping

Posted by klaurent September 26, 2023October 9, 2023Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Fengwei Xu, Ke Wang, Yuxin He, Jingwen Wu, Lei Zhu | Summary: Gas infall motions play a crucial role in high-mass star formation and are characterized by observable signatures in the form of blue-shifted asymmetric spectral line profiles ("blue profiles"). However, the connection between blue profiles and […]

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The ALMA Survey of Star Formation and Evolution in Massive Protoclusters with Blue Profiles (ASSEMBLE): Core Growth, Cluster Contraction, and Primordial Mass Segregation

Posted by klaurent September 26, 2023October 9, 2023Peking

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POEMMA (Probe of Extreme Multi-Messenger Astrophysics) Roadmap Update

Posted by klaurent September 25, 2023October 9, 2023Chicago

Kavli Affiliate: Angela V. Olinto | First 5 Authors: Angela V. Olinto, , , , | Summary: The Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) was designed as a NASA Astrophysics probe-class mission to identify the sources of ultrahigh energy cosmic rays (UHECRs) and observe cosmic neutrinos from extremely energetic transient sources. POEMMA consists of two […]

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Dualities and Discretizations of Integrable Quantum Field Theories from 4d Chern-Simons Theory

Posted by klaurent September 25, 2023October 9, 2023Tokyo

Kavli Affiliate: Masahito Yamazaki | First 5 Authors: Meer Ashwinkumar, Jun-ichi Sakamoto, Masahito Yamazaki, , | Summary: We elucidate the relationship between 2d integrable field theories and 2d integrable lattice models, in the framework of the 4d Chern-Simons theory. The 2d integrable field theory is realized by coupling the 4d theory to multiple 2d surface […]

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Using the Gerchberg-Saxton algorithm to reconstruct non-modulated pyramid wavefront sensor measurements

Posted by klaurent September 25, 2023Stanford

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101 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

Posted by dbos September 25, 2023MIT

Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Veselin B. Kostov, Brian P. Powell, Saul A. Rappaport, Tamas Borkovits, Robert Gagliano | Summary: We present our second catalog of quadruple star candidates, containing 101 systems discovered in TESS Full-Frame Image data. The targets were initially detected as eclipsing binary stars with the help of […]

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