Kavli Affiliate: Luis Ho | Summary:An intriguing puzzle in extragalactic astronomy is the scarcity of Little Red Dots (LRDs) at $z < 3$, compared to their higher abundance at earlier cosmic epochs. To investigate this, we measure the overdensity for 98 specpically confirmed LRDs at $3<z<7$, and find that these LRDs predominantly reside in under-dense […]
Kavli Affiliate: Luis Ho | Summary:A significant puzzle in extragalactic astronomy is the scarcity of Little Red Dots (LRDs) at $z < 3$, compared to their higher abundance at earlier epochs. To understand this transition, we investigate the cosmic evolution of LRD environments. We measure the overdensity for LRDs and the general galaxy population at […]
Kavli Affiliate: Roberto Maiolino | Summary:The rapid accumulation of massive dust reservoirs in the early Universe remains a major challenge in astrophysics. While core-collapse supernovae can inject large dust grains ($a gtrsim 0.1,μrm m$) on short timescales, explaining the total dust budgets in the early Universe likely requires efficient grain growth in the interstellar medium […]
Kavli Affiliate: Dheeraj Pasham | Summary:The repeated tidal stripping of a star by a supermassive black hole, known as a repeating partial tidal disruption event (rpTDE), can give rise to a transient that rebrightens months to years after the first outburst. Among the rpTDE candidates so far observed, some exhibit dimmer peak luminosities during each […]
Kavli Affiliate: Roberto Maiolino | Summary:The rapid accumulation of massive dust reservoirs in the early Universe remains a major challenge in astrophysics. While core-collapse supernovae can inject large dust grains ($a gtrsim 0.1,μrm m$) on short timescales, explaining the total dust budgets in the early Universe likely requires efficient grain growth in the interstellar medium […]
Kavli Affiliate: Dheeraj Pasham | Summary:The repeated tidal stripping of a star by a supermassive black hole, known as a repeating partial tidal disruption event (rpTDE), can give rise to a transient that rebrightens months to years after the first outburst. Among the rpTDE candidates so far observed, some exhibit dimmer peak luminosities during each […]
Kavli Affiliate: Chiara Daraio | Summary:Metamaterials can achieve exceptional functionality through careful engineering of their mesoscale structure. Although appropriately introduced irregularities can be advantageous, current approaches largely conform to regular structures to preserve tractability. Here, we contend that network theory, enriched with geometry and physics, provides a natural framework for designing metamaterials with controlled irregularities […]
Kavli Affiliate: Chiara Daraio | Summary:Metamaterials can achieve exceptional functionality through careful engineering of their mesoscale structure. Although appropriately introduced irregularities can be advantageous, current approaches largely conform to regular structures to preserve tractability. Here, we contend that network theory, enriched with geometry and physics, provides a natural framework for designing metamaterials with controlled irregularities […]
Kavli Affiliate: Lina Necib | Summary:Self-Interacting Dark Matter (SIDM) models with large cross sections at relative velocities below $sim100,rm km , s^-1$ can be tested with dwarf galaxy observations. We analyze six dark-matter-only zoom-in $sim10^10,rm M_odot$ halos with diverse assembly histories, adopting a cross section over mass of $σ/m = 70,cm^2 , g^-1$. We find […]
Kavli Affiliate: Ann-Shyn Chiang | Authors: Heng Chang, Yueh-Feng Wu, Ching-Che Charng, Kai-Chun Jhan, Shun-Chi Wu, Ann-Shyn Chiang, Hsiao-Chun Amy Lin, Chung-Chuan Lo, Bi-Chang Chen, Sung-Jan Lin and Li-An Chu | Summary: Volumetric intravital imaging of adult Drosophila brains remains challenging due to optical scattering and speed limitations of conventional microscopy. Here, we present V-shape […]