Large dark matter content and steep metallicity profile predicted for Ultra-Diffuse Galaxies formed in high-spin halos

Posted by dbos MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: José A. Benavides, Laura V. Sales, Mario. G. Abadi, Mark Vogelsberger, Federico Marinacci | Summary: We study the stellar properties of a sample of simulated ultra-diffuse galaxies (UDGs) with stellar mass $rm{M_star=10^{7.5} – 10^{9} ~ M_{odot}}$, selected from the TNG50 simulation, where UDGs form mainly in high-spin […]


Continue.. Large dark matter content and steep metallicity profile predicted for Ultra-Diffuse Galaxies formed in high-spin halos

FEASTS Combined with Interferometry (II): Significantly Changed HI Surface Densities and Even More Inefficient Star Formation in Galaxy Outer Disks

Posted by dbos Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: Jing Wang, Xuchen Lin, Lister Staveley-Smith, Dong Yang, Fabian Walter | Summary: We update the HI surface density measurements for a subset of 17 THINGS galaxies by dealing with the short-spacing problem of the original VLA HI images. It is the same sample that Bigiel et […]


Continue.. FEASTS Combined with Interferometry (II): Significantly Changed HI Surface Densities and Even More Inefficient Star Formation in Galaxy Outer Disks

The Non-Relativistic Effective Field Theory Of Dark Matter-Electron Interactions

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Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Gordan Krnjaic, Duncan Rocha, Tanner Trickle, , | Summary: Electronic excitations in atomic, molecular, and crystal targets are at the forefront of the ongoing search for light, sub-GeV dark matter (DM). In many light DM-electron interactions the energy and momentum deposited is much smaller than the electron […]


Continue.. The Non-Relativistic Effective Field Theory Of Dark Matter-Electron Interactions

The Non-Relativistic Effective Field Theory Of Dark Matter-Electron Interactions

Posted by Chicago

Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Gordan Krnjaic, Duncan Rocha, Tanner Trickle, , | Summary: Electronic excitations in atomic, molecular, and crystal targets are at the forefront of the ongoing search for light, sub-GeV dark matter (DM). In many light DM-electron interactions the energy and momentum deposited is much smaller than the electron […]


Continue.. The Non-Relativistic Effective Field Theory Of Dark Matter-Electron Interactions

Towards a universal analytical model for Population III star formation: interplay between feedback and fragmentation

Posted by dbos Peking

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Boyuan Liu, James Gurian, Kohei Inayoshi, Shingo Hirano, Takashi Hosokawa | Summary: JWST has brought us new insights into Cosmic Dawn with tentative detection of the unique signatures of metal-free Population III (Pop III) stars, such as strong HeII emission, extremely blue UV spectrum, and enhanced nitrogen […]


Continue.. Towards a universal analytical model for Population III star formation: interplay between feedback and fragmentation

Towards a universal analytical model for Population III star formation: interplay between feedback and fragmentation

Posted by dbos Peking

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Boyuan Liu, James Gurian, Kohei Inayoshi, Shingo Hirano, Takashi Hosokawa | Summary: JWST has brought us new insights into Cosmic Dawn with tentative detection of the unique signatures of metal-free Population III (Pop III) stars, such as strong HeII emission, extremely blue UV spectrum, and enhanced nitrogen […]


Continue.. Towards a universal analytical model for Population III star formation: interplay between feedback and fragmentation

Analysis of the full Spitzer microlensing sample I: Dark remnant candidates and Gaia predictions

Posted by dbos MIT

Kavli Affiliate: Michael M. Fausnaugh | First 5 Authors: Krzysztof A. Rybicki, Yossi Shvartzvald, Jennifer C. Yee, Sebastiano Calchi Novati, Eran O. Ofek | Summary: In the pursuit of understanding the population of stellar remnants within the Milky Way, we analyze the sample of $sim 950$ microlensing events observed by the Spitzer Space Telescope between […]


Continue.. Analysis of the full Spitzer microlensing sample I: Dark remnant candidates and Gaia predictions

Research on Tibetan Tourism Viewpoints information generation system based on LLM

Posted by dbos Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Jinhu Qi, Shuai Yan, Wentao Zhang, Yibo Zhang, Zirui Liu | Summary: Tibet, ensconced within China’s territorial expanse, is distinguished by its labyrinthine and heterogeneous topography, a testament to its profound historical heritage, and the cradle of a unique religious ethos. The very essence of these attributes, […]


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Approach for composition measurement of cosmic rays using the muon-to-electron ratio observed by LHAASO-KM2A

Posted by dbos Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Xishui Tian, Zhuo Li, Quanbu Gou, Hengying Zhang, Huihai He | Summary: Composition measurement of cosmic rays (CRs) around the knee of the CR energy spectrum is crucial for studying the processes of particle acceleration and propagation of Galactic CRs. The Square Kilometer Array (KM2A) of Large […]


Continue.. Approach for composition measurement of cosmic rays using the muon-to-electron ratio observed by LHAASO-KM2A