Tootfinder

Survival of dust in super-dusty galaxies at redshifts $z \approx 5-8$
Yuri A. Shchekinov (RRI), Biman B. Nath (RRI)
https://arxiv.org/abs/2506.05591 https:…

Survival of dust in super-dusty galaxies at redshifts $z \approx 5-8$
The presence of dust in galaxies at redshifts $z>5$ is commonly connected with core collapse supernovae (SN). Galaxies with exceptionally large dust mass, of order of $1 - 3$\% of the galaxy stellar mass, have been detected during the last decade. The required SN dust yield is $\gtrsim 1~M_\odot$ per supernova, which is comparable to the theoretically predicted maximum. However, the reverse shock (RS) penetrating the SN ejecta significantly destroy the dust particles nucleating there through sp…

It's Summer in Trump's America and Fascism Is in Bloom (David Rothkopf/The Daily Beast)
https://www.thedailybeast.com/donald-trump-has-a-bad-case-of-premature-despotism/
http://www.memeorandum.com/250608/p56#a250608p56

heise | Python-Grundlagen: Wie Sie for-Schleifen richtig einsetzen
for-Schleifen gehören zu den grundlegenden Konzepten in der Programmierung. Richtig eingesetzt sparen sie sehr viele Codezeilen.
h…

Variable Modified Newtonian Mechanics VII: Supermassive Black Hole at very high redshift
James C. C. Wong
https://arxiv.org/abs/2506.05423 https://

Variable Modified Newtonian Mechanics VII: Supermassive Black Hole at very high redshift
Observations of Supermassive Black Hole (SMBH) at very high redshift hosted by massive galaxy provide a challenge to the SMBH and massive galaxy formation models which are predicated on the Lambda CDM model that predicts a Hubble constant currently in tension with late time observations. In a gravitational system with two asymptotic solutions such as a central mass in an expanding cosmological background or an expanding background with radiation and baryons, we find that a particle's free falli…

FAQ: Nintendo Switch 2 – Spielformate und Abwärtskompatibilität
Upgrades, Spielkarten ohne Daten und Abwärtskompatibilität: Heise online hat die Nintendo Switch 2 ausprobiert und beantwortet die wichtigsten Fragen.
…

Emergent Berezinskii-Kosterlitz-Thouless deconfinement in super-Coulombic plasmas
Ayush De, Leo Radzihovsky, Snir Gazit
https://arxiv.org/abs/2506.05461 ht…

Emergent Berezinskii-Kosterlitz-Thouless deconfinement in super-Coulombic plasmas
We study the statistical mechanics of two-dimensional "super-Coulombic" plasmas, namely, neutral plasmas with power-law interactions longer-ranged than Coulomb. To that end, we employ numerically exact large-scale Monte Carlo simulations. Contrary to naive energy-entropy arguments, we observe a charge confinement-deconfinement transition as a function of temperature. Remarkably, the transition lies in the Berezinskii-Kosterlitz-Thouless (BKT) universality class. Our results corroborate recent d…

Prospects for the Detection of High-Redshift Gamma-Ray Bursts in the Era of EP and SVOM
Jun-Jie Wei, Xue-Feng Wu
https://arxiv.org/abs/2506.04709 https://

Prospects for the Detection of High-Redshift Gamma-Ray Bursts in the Era of EP and SVOM
Gamma-ray bursts (GRBs) are a promising probe of the high-redshift Universe, but their detection remains observationally challenging. In this work, we explore the detectability of high-$z$ GRBs by the Wide-field X-ray Telescope (WXT) aboard the Einstein Probe (\emph{EP}) and the coded-mask gamma-ray imager (ECLAIRs) aboard the Space-based multi-band astronomical Variable Objects Monitor (\emph{SVOM}). Using a population synthesis model calibrated to $Swift$ GRB observations, we develop a tool t…

Impact of initial mass function on the chemical evolution of high-redshift galaxies
Boyuan Liu, Michela Mapelli, Volker Bromm, Ralf S. Klessen, Lumen Boco, Tilman Hartwig, Simon C. O. Glover, Veronika Lipatova, Guglielmo Costa, Marco Dall'Amico, Giuliano Iorio, Kendall Shepherd, Alessandro Bressan
https://arxiv.org/abs/2506.…

Impact of initial mass function on the chemical evolution of high-redshift galaxies
Star formation and metal enrichment in galaxies are regulated by supernova (SN) explosions and metal yields from massive stars, which are sensitive to the high-mass end of the initial mass function (IMF). Recent JWST observations have reached a consensus on an invariant relation between stellar mass, metallicity, and star formation rate up to $z\sim 8$ and its breakdown at higher redshifts. It is crucial to understand the underlying physics, especially the role played by the IMF. We explore the…

heise | Aktien, ETCs, ETFs und Fonds: Wie Sie Ihr Geld in Öl und Gas anlegen
Der Bedarf an Öl und Erdgas wächst trotz des massiven Ausbaus erneuerbarer Energien. Anleger können auf verschiedenen Wegen davon profitieren.

heise | Smart Plugs und Home Assistant: Kaffeemaschine, Flurlicht und Co. automatisieren
Smarte Zwischenstecker lassen sich in Home Assistant integrieren, was wiederum praktische Automationen erlaubt. Wir liefern Beispiele.