Astrophysics – Page 503 – Kavli Institute Pre-Print Publications

The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range

Posted by klaurent April 29, 2021Peking

Kavli Affiliate: Xian Chen | First 5 Authors: Manuel Arca Sedda, Christopher P L Berry, Karan Jani, Pau Amaro-Seoane, Pierre Auclair | Summary: Since 2015 the gravitational-wave observations of LIGO and Virgo have transformed our understanding of compact-object binaries. In the years to come, ground-based gravitational-wave observatories such as LIGO, Virgo, and their successors will […]

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Hubble Space Telescope UV and H$α$ Measurements of the Accretion Excess Emission from the Young Giant Planet PDS 70 b

Posted by klaurent April 28, 2021Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Yifan Zhou, Brendan P. Bowler, Kevin R. Wagner, Glenn Schneider, Dániel Apai | Summary: Recent discoveries of young exoplanets within their natal disks offer exciting opportunities to study ongoing planet formation. In particular, a planet’s mass accretion rate can be constrained by observing the accretion-induced excess […]

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Signatures of Recent Cosmic-Ray Acceleration in the High-Latitude $γ$-Ray Sky

Posted by klaurent April 28, 2021Stanford

Kavli Affiliate: Troy A. Porter | First 5 Authors: Guðlaugur Jóhannesson, Troy A. Porter, , , | Summary: Cosmic-ray (CR) sources temporarily enhance the relativistic particle density in their vicinity over the background distribution accumulated from the Galaxy-wide past injection activity and propagation. If individual sources are close enough to the solar system, their localised […]

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Signatures of Recent Cosmic-Ray Acceleration in the High-Latitude $γ$-Ray Sky

Posted by klaurent April 28, 2021Stanford

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NICER observations of the black hole candidate MAXI J0637$-$430 during the 2019-2020 Outburst

Posted by klaurent April 27, 2021MIT

Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Arghajit Jana, Gaurava K. Jaisawal, Sachindra Naik, Neeraj Kumari, Birendra Chhotaray | Summary: We present detailed timing and spectral studies of the black hole candidate MAXI J0637$-$430 during its 2019-2020 outburst using observations with the {em Neutron Star Interior Composition Explorer (NICER)} and the {em Neil […]

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Projected sensitivity of the LUX-ZEPLIN (LZ) experiment to the two-neutrino and neutrinoless double beta decays of $^{134}$Xe

Posted by klaurent April 26, 2021Stanford

Kavli Affiliate: T. A. Shutt | First 5 Authors: The LUX-ZEPLIN, Collaboration, :, D. S. Akerib, A. K. Al Musalhi | Summary: The projected sensitivity of the LUX-ZEPLIN (LZ) experiment to two-neutrino and neutrinoless double beta decay of $^{134}$Xe is presented. LZ is a 10-tonne xenon time projection chamber optimized for the detection of dark […]

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High redshift JWST predictions from IllustrisTNG: III. Infrared luminosity functions, obscured star formation and dust temperature of high-redshift galaxies

Posted by klaurent April 26, 2021MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Xuejian Shen, Mark Vogelsberger, Dylan Nelson, Sandro Tacchella, Lars Hernquist | Summary: We post-process galaxies in the IllustrisTNG simulations with SKIRT radiative transfer calculations to make predictions for the rest-frame near-infrared (NIR) and far-infrared (FIR) properties of galaxies at $zgeq 4$. The rest-frame $K$- and $z$-band galaxy […]

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Search for $B^{+}to K^{+}νbarν$ decays using an inclusive tagging method at Belle II

Posted by klaurent April 26, 2021Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, F. Abudinén, I. Adachi, K. Adamczyk, P. Ahlburg | Summary: A search for the flavor-changing neutral-current decay $B^{+}to K^{+}nubar{nu}$ is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The results are based on a data sample corresponding to an […]

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Neutral vs Ion Linewidths in Barnard 5: Evidence for Penetration by MHD Waves

Posted by klaurent April 26, 2021Stanford

Kavli Affiliate: Sarah E. Church | First 5 Authors: Jaime E. Pineda, Anika Schmiedeke, Paola Caselli, Steven W. Stahler, David T. Frayer | Summary: Dense cores are the final place where turbulence is dissipated. It has been proposed from theoretical arguments that the non-thermal velocity dispersion should be narrower both for molecular ions (compared to […]

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Effects of model incompleteness on the drift-scan calibration of radio telescopes

Posted by klaurent April 25, 2021MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Bharat K. Gehlot, Daniel C. Jacobs, Judd D. Bowman, Nivedita Mahesh, Steven G. Murray | Summary: Precision calibration poses challenges to experiments probing the redshifted 21-cm signal of neutral hydrogen from the Cosmic Dawn and Epoch of Reionization (z~30-6). In both interferometric and global signal experiments, systematic […]

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