首页

2024.05.28

Mathematica code for calculating CMB anisotropy

<p>The Planck mission measures the cosmic microwave background (CMB) with unprecedentedly precision. The angular spectra extracted from Planck&#39;s CMB measurements can be used to test gravitational theories and cosmological models. This is done by comparing the observational results with theoretical predictions that can be calculated by solving together the Boltzmann equation governing the evolution...</p>

2024.05.31

Formation of satellite systems around Jupiter and Saturn

<p>Satellite systems around Jupiter and Saturn have different characteristics. The Saturnian system is dominated by a giant moon, Titan, which holds over 95% of the total mass of Saturnian moons. On the other hand, the Jovian system has four large moons in a compact orbital area, and inner three, Io, Europa and Ganymede, are known to be in resonant orbits. Previous studies have shown that the spec...</p>

2024.05.24

A Euclid View of the Intracluster Light in the Perseus Cluster

<p>I will present new state-of-the art observations of the Perseus Cluster taken as part of the Euclid Early Release Observations. &nbsp;This data allows us, for the first time, to characterize the intracluster light (ICL) and intracluster globular clusters (ICGCs) in Perseus out to 600 kpc from the BCG. &nbsp;We find that within 500kpc of the BCG, there are 70,000 globular clusters and that the ICL account...</p>

2024.05.21

Galaxy Assembly Revealed by the Life Cycle of Star Clusters

<p>The life cycle of a star cluster can be broken into three epochs: 1) the birth of the cluster; 2) the long phase when the cluster evolves in gravitational equilibrium, gradually losing stars; and 3) the death of the cluster when it dissolves into a stream of stars. The clusters in the first epoch directly record the initial properties inherited from the host galaxy. The evolved clusters during ...</p>

2024.05.23

Accreting massive black holes and a Czech UV space telescope

<p>Most galaxies comparable to or larger than the mass of the Milky Way host hot, X-ray emitting atmospheres and accreting supermassive black holes. &nbsp;Hot atmospheres and radio jets and lobes are the ingredients of radio-mechanical active galactic nucleus (AGN) feedback. At least half of the most massive early-type galaxies harbour multi-phase filamentary gas, which appears to result from the therm...</p>

2024.05.29

A closer look at the building blocks of planetesimals: characterizing the dust content of protoplanetary disks

<p>The dust content of protoplanetary disks plays a crucial role in the planet formation process. The key ingredients are not only the total budget of solid mass and the dust particle size distribution, but also how these are distributed throughout the protoplanetary disk. Characterizing the dust surface density, particle properties, and size distribution within the disk and its substructures is, ...</p>

2024.05.24

Cracking neutron star mysteries: Physics-driven insights into interior, surface, and exterior by X-ray Timing results

<p>The utilization of Pulse Profile modeling techniques could simultaneously provide measurements for Neutron star Mass Radius and offer insights into their hotspot distribution. Presently, these methodologies rely on meta models of the equation of state (EOS) and employ pure geometrical cap overlapping techniques to align with observational data. This presentation aims to showcase our recent resu...</p>

2024.07.08

Damping Obliquities of Hot Jupiter Hosts by Resonance Locking

<p>When orbiting hotter stars, hot Jupiters are often highly inclined relative to their host star equator planes. By contrast, hot Jupiters orbiting cooler stars are more aligned. Prior attempts to explain this correlation between stellar obliquity and effective temperature have proven problematic. We show how resonance locking—the coupling of the planet&#39;s orbit to a stellar gravity mode (g-mode)...</p>

2024.06.03

Planet Formation near the Inner Disk Edge

<p>Short-period super-Earths and sub-Neptunes are the most abundant type of planets. Their origin is key to understanding planet formation and the evolution of protoplanetary disks. Recent observations found that, contrary to mature systems, young planetary systems appear to be dominated by near-resonant configurations, suggesting a rich history of resonance capture followed by secular dynamical i...</p>

2024.05.17

Portable Fantacies: How to Work with Android-like Devices

<p>Over the past few years, the computing capability of portable devices equipped with ARM processors has expanded exponentially. Yet, despite their growing power, the prevalent Android-like operating systems often confine users to a &#39;walled garden,&#39; restricting direct interaction with the core Linux functionalities. In this presentation, we will explore the transformative potential of Termux and ...</p>