Astrophysics – Page 55 – Kavli Institute Pre-Print Publications

Development of a bipolar 50 V output digital-to-analog converter system for ion-shuttling operations

Posted by klaurent December 10, 2024Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: T. Oshio, R. Nishimoto, T. Higuchi, K. Hayasaka, K. Koike | Summary: The quantum charge-coupled device (QCCD) is one of the notable architectures to achieve large-scale trapped-ion quantum computers. To realize QCCD architecture, ions must be transported quickly while minimizing motional excitation. High-voltage sources are necessary to […]

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How do uncertainties in galaxy formation physics impact field-level galaxy bias?

Posted by dbos December 9, 2024January 13, 2025Stanford

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Mahlet Shiferaw, Nickolas Kokron, Risa H. Wechsler, , | Summary: Our ability to extract cosmological information from galaxy surveys is limited by uncertainties in the galaxy-dark matter halo relationship for a given galaxy population, which are governed by the intricacies of galaxy formation. To quantify these […]

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A comprehensive study of type I (thermonuclear) bursts in the new transient SRGA J144459.2$-$604207

Posted by dbos December 8, 2024Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Tao Fu, Zhaosheng Li, Yuanyue Pan, Long Ji, Yupeng Chen | Summary: We report analysis of $textit{Insight}$-HXMT observations of the newly discovered accreting millisecond pulsar SRGA J144459.2$-$604207. During the outburst, detected in 2024 February by $textit{eROSITA}$, the broadband persistent spectrum was well fitted by an absorbed Comptonization […]

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A comprehensive study of type I (thermonuclear) bursts in the new transient SRGA J144459.2$-$604207

Posted by dbos December 8, 2024Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Tao Fu, Zhaosheng Li, Yuanyue Pan, Long Ji, Yupeng Chen | Summary: We report an analysis of Insight-HXMT observations of the newly discovered accreting millisecond pulsar SRGA J144459.2$-$604207. During the outburst, detected in 2024 February by SRG/ART-XC, the broadband persistent spectrum was well fitted by an absorbed […]

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TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system

Posted by dbos December 7, 2024MIT

Kavli Affiliate: Roland Vanderspek | First 5 Authors: Michaela Vítková, Rafael Brahm, Trifon Trifonov, Petr Kabáth, Andrés Jordán | Summary: We present a joint analysis of TTVs and Doppler data for the transiting exoplanet system TOI-4504. TOI-4504 c is a warm Jupiter-mass planet that exhibits the largest known transit timing variations (TTVs), with a peak-to-node […]

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TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system

Posted by dbos December 7, 2024MIT

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TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system

Posted by dbos December 7, 2024MIT

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TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system

Posted by dbos December 7, 2024MIT

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The First JWST View of a 30-Myr-old Protoplanetary Disk Reveals a Late-stage Carbon-rich Phase

Posted by dbos December 7, 2024Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Feng Long, Ilaria Pascucci, Adrien Houge, Andrea Banzatti, Klaus M. Pontoppidan | Summary: We present a JWST MIRI/MRS spectrum of the inner disk of WISE J044634.16$-$262756.1B (hereafter J0446B), an old ($sim$34 Myr) M4.5 star but with hints of ongoing accretion. The spectrum is molecule-rich and dominated […]

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SZ-X-ray Surface Brightness Fluctuations in the SPT-XMM clusters

Posted by klaurent December 7, 2024Chicago

Kavli Affiliate: Lindsey E. Bleem | First 5 Authors: Charles Romero, Massimo Gaspari, Gerrit Schellenberger, Bradford A. Benson, Lindsey E. Bleem | Summary: The hot plasma in galaxy clusters, the intracluster medium (ICM), is expected to be shaped by subsonic turbulent motions, which are key for heating, cooling, and transport mechanisms. The turbulent motions contribute […]

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