Visualizing Millisecond Atomic Dynamics of Nanocrystals in Liquid

Posted by klaurent Berkeley

Kavli Affiliate: Paul Alivisatos | Summary:Atomic structures of nanomaterials are inherently dynamic, continuously reshaped through interactions with chemical species and external stimuli. Such dynamics are further amplified as the size and dimensionality of nanomaterials are reduced. Despite advances in analytical methods, it remains challenging to capture structural dynamics of nanomaterials in reactive environments with both […]


Continue.. Visualizing Millisecond Atomic Dynamics of Nanocrystals in Liquid

The background gas humming and multi-messenger transients of stalled supermassive black hole binaries

Posted by klaurent Peking

Kavli Affiliate: Pau Amaro Seoane | Summary:We establish the multi-messenger mechanics of episodic mass transfer in supermassive black hole binaries stalled within circumbinary discs. Utilizing continuous wavelet transforms, we isolate localized gas clumps at the cavity edge and track their evolution. By regularizing the forced fluid equations at Lindblad resonances via the inhomogeneous Airy differential […]


Continue.. The background gas humming and multi-messenger transients of stalled supermassive black hole binaries

A Fast, Hot Wind from a Nuclear Starburst

Posted by klaurent MIT

Kavli Affiliate: Erin Kara | Summary:Galaxies with intense star formation often host multiphase, galaxy-scale winds powered by supernovae and fast stellar winds. These are strong enough to disrupt the star-forming interstellar medium, and they chemically enrich the surrounding circumgalactic medium. However, their launching mechanism remains unknown. Here we show that thermal gas pressure is sufficient […]


Continue.. A Fast, Hot Wind from a Nuclear Starburst

Analysis and control of Raman phonon dynamics for enhanced optical frequency conversion

Posted by klaurent Cornell

Kavli Affiliate: Frank Wise | Summary:Raman phonons are quantized molecular motions that arise from the inelastic scattering of light and mediate a wide range of spectroscopic and nonlinear optical phenomena. These can play a major role in frequency-conversion processes, but commonly-used theoretical treatments based on the Raman gain spectrum largely neglect the phonons and their […]


Continue.. Analysis and control of Raman phonon dynamics for enhanced optical frequency conversion

Analysis and control of Raman phonon dynamics for enhanced optical frequency conversion

Posted by klaurent Cornell

Kavli Affiliate: Frank Wise | Summary:Raman phonons are quantized molecular motions that arise from the inelastic scattering of light and mediate a wide range of spectroscopic and nonlinear optical phenomena. These can play a major role in frequency-conversion processes, but commonly-used theoretical treatments based on the Raman gain spectrum largely neglect the phonons and their […]


Continue.. Analysis and control of Raman phonon dynamics for enhanced optical frequency conversion

Raman phonon dynamics and its control for enhanced optical frequency conversion

Posted by klaurent Cornell

Kavli Affiliate: Frank Wise | Summary:Raman phonons arise from the inelastic scattering of light and represent quantized molecular motions that mediate a wide range of spectroscopic and nonlinear optical phenomena. In this work, we clarify the physical role of Raman phonons within a previously-developed time-domain framework based on the Raman-induced index modulation, and show that […]


Continue.. Raman phonon dynamics and its control for enhanced optical frequency conversion

Raman phonon dynamics and its control for enhanced optical frequency conversion

Posted by klaurent Cornell

Kavli Affiliate: Frank Wise | Summary:Raman phonons arise from the inelastic scattering of light and represent quantized molecular motions that mediate a wide range of spectroscopic and nonlinear optical phenomena. In this work, we clarify the physical role of Raman phonons within a previously-developed time-domain framework based on the Raman-induced index modulation, and show that […]


Continue.. Raman phonon dynamics and its control for enhanced optical frequency conversion

Raman phonon dynamics and its control for enhanced optical frequency conversion

Posted by klaurent Cornell

Kavli Affiliate: Frank Wise | Summary:Raman phonons arise from the inelastic scattering of light and represent quantized molecular motions that mediate a wide range of spectroscopic and nonlinear optical phenomena. In this work, we clarify the physical role of Raman phonons within a previously-developed time-domain framework based on the Raman-induced index modulation, and show that […]


Continue.. Raman phonon dynamics and its control for enhanced optical frequency conversion

RRAT J1541+4703: A Rotating Radio Transient Exhibiting Normal Pulsar States

Posted by klaurent Peking

Kavli Affiliate: Renxin Xu | Summary:Rotating Radio Transients (RRATs) are a class of pulsar-like objects characterized by intermittent radio emissions. Among them, RRATs that exhibit both RRAT and normal pulsar (NP) states may represent a key evolutionary stage from nulling pulsars to RRATs. We performed a detailed analysis of RRAT J1574+4703 using the Five-hundred-meter Aperture […]


Continue.. RRAT J1541+4703: A Rotating Radio Transient Exhibiting Normal Pulsar States

IXPE view of the Crab pulsar following the 17 July and 6 August 2025 glitches

Posted by klaurent Stanford

Kavli Affiliate: Nicola Omodei | Summary:The Crab pulsar experienced two relatively small glitches separated by only 20 days in September and October 2025. IXPE observed the source twice, with delay times since the glitch epoch ranging between 35 and 75 days, depending on the observation. We carried out a multi-method analysis to investigate whether there […]


Continue.. IXPE view of the Crab pulsar following the 17 July and 6 August 2025 glitches