WINTER on S250206dm: A near-infrared search for an electromagnetic counterpart

Posted by klaurent MIT

Kavli Affiliate: Gabor Furesz | First 5 Authors: Danielle Frostig, Danielle Frostig, , , | Summary: We present near-infrared follow-up observations of the International Gravitational Wave Network (IGWN) event S250206dm with the Wide-Field Infrared Transient Explorer (WINTER). WINTER is a near-infrared time-domain survey designed for electromagnetic follow-up of gravitational-wave sources localized to $leq$300 deg$^2$. The […]


Continue.. WINTER on S250206dm: A near-infrared search for an electromagnetic counterpart

Light WIMPs and MeV Gamma-ray Detection with COSI

Posted by klaurent Tokyo

Kavli Affiliate: Tom Melia | First 5 Authors: Yu Watanabe, Yu Watanabe, , , | Summary: Light weakly interacting massive particles (WIMPs), whose masses are in the sub-GeV scale, have been attracting more attention due to the negative results searching for traditional WIMPs. The light WIMPs are expected to produce gamma rays from annihilation in […]


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Symmetry-protected topological order identified via Gutzwiller-guided density-matrix-renormalization-group: $mathrmSO(n)$ spin chains

Posted by klaurent UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: , , , , | Summary: We present a comprehensive study of topological phases in the SO($n$) spin chains using a combination of analytical parton construction and numerical techniques. For even $n=2l$, we identify a novel SPT$^2$ phase characterized by two distinct topological sectors, exhibiting exact degeneracy […]


Continue.. Symmetry-protected topological order identified via Gutzwiller-guided density-matrix-renormalization-group: $mathrmSO(n)$ spin chains

Massive Black Hole Seed Formation in Strong X-ray Environments at High Redshift

Posted by klaurent Peking

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Kazutaka Kimura, Kazutaka Kimura, , , | Summary: Direct collapse of pristine gas in early galaxies is a promissing pathway for forming supermassive black holes (BHs) powering active galactic nuclei (AGNs) at the epoch of reionization (EoR). This seeding mechanism requires suppression of molecular hydrogen (H$_2$) cooling […]


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Cosmogenic Neutrino Point Source and KM3-230213A

Posted by klaurent Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Qinyuan Zhang, Qinyuan Zhang, , , | Summary: Cosmogenic neutrinos (CNs) are produced by ultra-high energy cosmic rays (UHECRs) interacting with cosmic background radiation. We investigated the properties of CN point/extended sources, i.e, the neutrino spectrum, and angular profile as functions of time, by assuming that UHECR […]


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A Comprehensive Study of Thermonuclear X-ray Bursts from 4U 1820-30 with NICER: Accretion Disk Interactions and a Candidate Burst Oscillation

Posted by klaurent MIT

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: , , , , | Summary: We present the results obtained from timing and spectral studies of 15 thermonuclear X-ray bursts from 4U 1820-30 observed with the Neutron Star Interior Composition Explorer (NICER) during its five years of observations between 2017-2022. All bursts showed clear signs of […]


Continue.. A Comprehensive Study of Thermonuclear X-ray Bursts from 4U 1820-30 with NICER: Accretion Disk Interactions and a Candidate Burst Oscillation

Rapid inference and comparison of gravitational-wave population models with neural variational posteriors

Posted by klaurent MIT

Kavli Affiliate: Salvatore Vitale | First 5 Authors: , , , , | Summary: The LIGO-Virgo-KAGRA catalog has been analyzed with an abundance of different population models due to theoretical uncertainty in the formation of gravitational-wave sources. To expedite model exploration, we introduce an efficient and accurate variational Bayesian approach that learns the population posterior […]


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Effect of charge regulation on the screening properties of zwitterionic macroion solutions

Posted by klaurent UCAS

Kavli Affiliate: Rudolf Podgornik | First 5 Authors: Rashmi Kandari, Rashmi Kandari, , , | Summary: Precisely controlling the surface charge of zwitterionic macromolecules is crucial for tailoring their properties and optimizing them for specific applications. Here, we present a generalized calculation scheme for determining the screening length in solutions containing zwitterionic macroions, where the […]


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pH-Sensitive Optical Nanocomposites Using Polymer-Coated Gold Nanorods

Posted by klaurent Hopkins

Kavli Affiliate: Xingde Li | Authors: Yongping Chen and Xingde Li | Summary: This study investigates the synthesis of pH-responsive, reversible nanocomposites comprising polystyrene sulfonate (PSS)-coated gold nanorods and poly(allylamine hydrochloride) (PAH)-coated gold nanorods, along with their optical properties. We observed a pH-dependent swelling/shrinking of the nanocomposites and a dramatic red-shift (~ 60 nm) of […]


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