Changing-Look Active Galactic Nuclei in SDSS-V: Host-Galaxy Properties and Black-Hole Scaling Relations

Posted by klaurent Peking

Kavli Affiliate: Claudio Ricci | Summary:Changing-look active galactic nuclei (CL-AGNs) exhibit dramatic spectral variability on unexpectedly short timescales, challenging standard accretion flow models. Despite growing samples, the physical drivers of this extreme variability, and the potential link to host-galaxy properties, remain unknown. Regardless of the underlying mechanism, the transition between AGN-dominated and host-dominated spectra offers […]


Continue.. Changing-Look Active Galactic Nuclei in SDSS-V: Host-Galaxy Properties and Black-Hole Scaling Relations

Changing-Look Active Galactic Nuclei in SDSS-V: Host-Galaxy Properties and Black-Hole Scaling Relations

Posted by klaurent Peking

Kavli Affiliate: Claudio Ricci| First 5 Authors: Grisha Zeltyn, Grisha Zeltyn, , , | Summary:Changing-look active galactic nuclei (CL-AGNs) exhibit dramatic spectral variability on unexpectedly short timescales, challenging standard accretion flow models. Despite growing samples, the physical drivers of this extreme variability, and the potential link to host-galaxy properties, remain unknown. Regardless of the underlying […]


Continue.. Changing-Look Active Galactic Nuclei in SDSS-V: Host-Galaxy Properties and Black-Hole Scaling Relations

High-speed antiferromagnetic domain walls driven by coherent spin waves

Posted by klaurent Caltech

Kavli Affiliate: David Hsieh| Summary:The ability to rapidly manipulate domain walls (DWs) in magnetic materials is key to developing novel high-speed spintronic memory and computing devices. Antiferromagnetic (AFM) materials present a particularly promising platform due to their robustness against stray fields and their potential for exceptional DW velocities. Among various proposed driving mechanisms, coherent spin […]


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Finding the boundary: Using galaxy membership to inform galaxy cluster extent through machine learning

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:The spatial extent of the environment’s impact on galaxies marks a transitional region between cluster and field galaxies. We present a data-driven method to identify this region in galaxy clusters with masses $M_200rm ,mean>10^13 M_odot$ at $z = 0$. Using resolved galaxy samples from the largest simulation volume of IllustrisTNG […]


Continue.. Finding the boundary: Using galaxy membership to inform galaxy cluster extent through machine learning

Finding the boundary: Using galaxy membership to inform galaxy cluster extent through machine learning

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger| First 5 Authors: Christine Hao, Christine Hao, , , | Summary:The spatial extent of the environment’s impact on galaxies marks a transitional region between cluster and field galaxies. We present a data-driven method to identify this region in galaxy clusters with masses $M_200rm ,mean>10^13 M_odot$ at $z = 0$. Using resolved […]


Continue.. Finding the boundary: Using galaxy membership to inform galaxy cluster extent through machine learning

AcousTools: A ‘Full-Stack’, Python-Based, Acoustic Holography Library

Posted by klaurent Cornell

Kavli Affiliate: Kyle Shen | First 5 Authors: Joshua Mukherjee, Joshua Mukherjee, , , | Summary: Acoustic Holography is an emerging field where mid-air ultrasound is controlled and manipulated for novel and exciting applications. These range from mid-air haptics, volumetric displays, contactless fabrication, and even chemical and biomedical applications such as drug delivery. To develop […]


Continue.. AcousTools: A ‘Full-Stack’, Python-Based, Acoustic Holography Library

Prospects for geoneutrino detection with JUNO

Posted by klaurent Cornell

Kavli Affiliate: Chris Xu| First 5 Authors: Thomas Adam, Thomas Adam, , , | Summary:Geoneutrinos, which are antineutrinos emitted during the decay of long-lived radioactive elements inside Earth, serve as a unique tool for studying the composition and heat budget of our planet. The Jiangmen Underground Neutrino Observatory (JUNO) experiment in China, which has recently […]


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Bridging the divide: axion searches and axino phenomenology at colliders

Posted by klaurent Chicago

Kavli Affiliate: David W. Miller | Summary:We discuss a phenomenological model that extends the minimal supersymmetric standard model to contain axions and their supersymmetric partner, the axino. In the supersymmetric DFSZ axion model, the axino has tree level couplings to the higgs sector. In the case where $R$-parity is conserved, collider experiments may be sensitive […]


Continue.. Bridging the divide: axion searches and axino phenomenology at colliders

Bridging the divide: axion searches and axino phenomenology at colliders

Posted by klaurent Chicago

Kavli Affiliate: David W. Miller | Summary:We discuss a phenomenological model that extends the minimal supersymmetric standard model to contain axions and their supersymmetric partner, the axino. In the supersymmetric DFSZ axion model, the axino has tree level couplings to the higgs sector. In the case where $R$-parity is conserved, collider experiments may be sensitive […]


Continue.. Bridging the divide: axion searches and axino phenomenology at colliders

Bridging the divide: axion searches and axino phenomenology at colliders

Posted by klaurent Chicago

Kavli Affiliate: David W. Miller | Summary:We discuss a phenomenological model extending the minimal supersymmetric standard model containing axions and their supersymmetric partner, the axino. In the supersymmetric DFSZ axion model, the axino has tree level couplings to the higgs sector. In the case where R-parity is conserved, collider experiments may be sensitive to displaced […]


Continue.. Bridging the divide: axion searches and axino phenomenology at colliders