March 2025 – Page 15 – Kavli Institute Pre-Print Publications

Probing the cosmic baryon distribution and the impact of AGN feedback with FRBs in CROCODILE simulation

Posted by klaurent March 17, 2025Tokyo

Kavli Affiliate: Khee-Gan Lee | Summary:We investigate the Missing Baryon problem using Fast Radio Bursts (FRBs) to trace cosmic baryons. Our CROCODILE simulations, performed with the GADGET3/4-OSAKA smoothed particle hydrodynamics code, include star formation, supernova (SN) and active galactic nuclei (AGN) feedback. We generate light cones from large-scale structure simulations to compute gas density profiles […]

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Solar Sail Momentum Management With Mass Translation and Reflectivity Devices Using Predictive Control

Posted by klaurent March 16, 2025Cornell

Kavli Affiliate: Kyle Shen | First 5 Authors: Ping-Yen Shen, Ping-Yen Shen, , , | Summary: Solar sails enable propellant-free space missions by utilizing solar radiation pressure as thrust. However, disturbance torques act on the solar sail and effective attitude control leads to the continuous accumulation of reaction wheel angular momentum, necessitating an efficient momentum […]

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The Power of the Cosmic Web

Posted by klaurent March 14, 2025Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: , , , , | Summary: We study the cosmological information contained in the cosmic web, categorized as four structure types: nodes, filaments, walls, and voids, using the Quijote simulations and a modified nexus+ algorithm. We show that splitting the density field by the four structure types […]

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The Power of the Cosmic Web

Posted by klaurent March 14, 2025Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: James Sunseri, Adrian E. Bayer, Jia Liu, , | Summary: We study the cosmological information contained in the cosmic web, categorized as four structure types: nodes, filaments, walls, and voids, using the Quijote simulations and a modified nexus+ algorithm. We show that splitting the density field by […]

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The Chicago Carnegie Hubble Program: Improving the Calibration of SNe Ia with JWST Measurements of the Tip of the Red Giant Branch

Posted by dbos March 14, 2025March 26, 2025Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Taylor J. Hoyt, In Sung Jang, Wendy L. Freedman, Barry F. Madore, Kayla A. Owens | Summary: We present distances to ten supernova (SN) host galaxies determined via the red giant branch tip (TRGB) using JWST/NIRCAM and the F115W, F356W, and F444W bandpasses. Our analysis, including […]

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BlackTHUNDER strikes twice: rest-frame Balmer-line absorption and high Eddington accretion rate in a Little Red Dot at $z=7.04$

Posted by klaurent March 14, 2025Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:JWST has revealed a population of ‘Little Red Dots’ (LRDs): compact, red objects at redshifts z=2-9 with ‘v’-shaped spectral energy distributions, broad permitted lines, and, often, hydrogen Balmer absorption. We use NIRSpec/IFS data from the BlackTHUNDER survey to study the H$α$ line in the LRD Abell2744-QSO1 at z=7.04, which is […]

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Exploring the Future of Soft X-ray Polarimetry: the Capabilities of the REDSoX Instrument for XDINS and Magnetar Studies

Posted by klaurent March 14, 2025MIT

Kavli Affiliate: Herman Marshall | Summary:X-ray polarimetry offers a unique window into neutron star physics and can provide answers to questions that cannot otherwise be probed. The up-and-coming REDSoX sounding rocket mission will be the first experiment equipped with a detector able to explore polarized X-rays below 1 keV, observing in the 0.2-0.4 keV range. […]

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Exploring the Future of Soft X-ray Polarimetry: the Capabilities of the REDSoX Instrument for XDINS and Magnetar Studies

Posted by dbos March 14, 2025MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Ruth M. E. Kelly, Herman L. Marshall, Silvia Zane, Nabil Brice, Swati Ravi | Summary: X-ray polarimetry offers a unique window into neutron star physics and can provide answers to questions that cannot otherwise be probed. The up-and-coming REDSoX sounding rocket mission will be the first […]

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Exploring the Future of Soft X-ray Polarimetry: the Capabilities of the REDSoX Instrument for XDINS and Magnetar Studies

Posted by dbos March 14, 2025MIT

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Exploring the Future of Soft X-ray Polarimetry: the Capabilities of the REDSoX Instrument for XDINS and Magnetar Studies

Posted by dbos March 14, 2025March 26, 2025MIT

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