Tootfinder

KV-Connect-Aus in NRW: "Digitaldesaster für Ärzte, Papierprivileg für Behörden"
Während Ärzten bei Nichtdigitalisierung Sanktionen drohen, kehrt ein Bundesland zurück in den Dornröschenschlaf. Das ärgert den Kinderarzt Michael Achenbach.

Chaos in Horndeski cosmologies
Mikhail S. Volkov
https://arxiv.org/abs/2509.04590 https://arxiv.org/pdf/2509.04590

Chaos in Horndeski cosmologies
We analyze how a scalar field can affect the chaotic behaviour of homogeneous and isotropic Bianchi IX cosmologies. It is known that a massless, minimally coupled scalar field removes the chaos. However, in more general Horndeski theories, the situation is more complex. We find that in shift-symmetric $K$-essence theories, chaos persists if the scalar field contribution to the initial-value constraint is {\it subleading} compared to that of the anisotropies. In this case, solutions oscillate as…

Lense-Thirring precessing magnetar engine drives a superluminous supernova
Joseph R. Farah, Logan J. Prust, D. Andrew Howell, Yuan Qi Ni, Curtis McCully, Moira Andrews, Harsh Kumar, Daichi Hiramatsu, Sebastian Gomez Kathryn Wynn, Alexei V. Filippenko, K. Azalee Bostroem, Edo Berger, Peter Blanchard
https://arxiv.org/abs/2509.08051

Lense-Thirring precessing magnetar engine drives a superluminous supernova
Type I superluminous supernovae (SLSNe-I) are at least an order of magnitude brighter than standard supernovae, with the internal power source for their luminosity still unknown. The central engines of SLSNe-I are hypothesized to be magnetars, but the majority of SLSNe-I light curves have multiple bumps or peaks that are unexplained by the standard magnetar model. Existing explanations for the bumps either modulate the central engine luminosity or invoke interactions with material in the circum…

Unlock giant nonreciprocity via multi-valued behavior of non-Hermitian zero-index materials
Yang Li, Yueyang Liu, Yucong Yang, Tianyi Zhang, Jianfeng Chen, Tian Dong, Fulong Shi, Phatham Loahavilai, Tianchi Zhang, Di Wu, Zixuan Wei, Dengfu Deng, Jun Qin, Longjiang Deng, Cheng-Wei Qiu, Lei Bi
https://arxiv.org/abs/2509.06121

Unlock giant nonreciprocity via multi-valued behavior of non-Hermitian zero-index materials
Although Einstein's field equations are time-independent, the multivalued feature of the horizon of a blackhole naturally enables the one-way transmission, leading to the strong arrow of time from the time-independent gravitational interaction. Here we experimentally demonstrate a photonic analogue of this principle and reveal the infinite nonreciprocity of the time-reversal-symmetric Maxwell equations. By designing a non-Hermitian zero-index magneto-optical metawaveguide, we introduce multival…

Ein Toter bei Luftangriff in der Region Kiew
Bei einem russischen Luftangriff auf die Stadt Bila Zerkwa in der Region Kiew ist Behörden zufolge ein Zivilist getötet worden. "Die Leiche eines Mannes wurde entdeckt, während Feuerwehrleute einen Brand in einem Garagenkomplex löschten, der infolge des Angriffs in Flammen aufgegangen war", schrieb Mykola Kalaschnik, der Gouverneur der Region, auf Telegram. Er fügte hinzu, dass nac…
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Ukraine-Liveblog: ++ Bisher offenbar 2.000 Soldaten aus Nordkorea getötet ++
Chinas Staatschef Xi und Kremlchef Putin sind in Peking zu Gesprächen zusammengekommen. In der Region Kiew ist bei einem russischen Luftangriff nach Behördenangaben mindestens ein Mensch getötet worden.

Solving quantum-inspired dynamics on quantum and classical annealers
Philipp Hanussek, Jakub Paw{\l}owski, Zakaria Mzaouali, Bart{\l}omiej Gardas
https://arxiv.org/abs/2509.03952

Solving quantum-inspired dynamics on quantum and classical annealers
We propose a practical benchmarking suite inspired by physical dynamics to challenge both quantum and classical computers. Using a parallel in time encoding, we convert the real-time propagator of an $n$-qubit, possibly non-Hermitian, Hamiltonian into a quadratic-unconstrained binary optimisation (QUBO) problem. The resulting QUBO instances are executed on D-Wave quantum annealers as well as using two classical solvers, Simulated Annealing and VeloxQ, a state-of-the-art classical heuristic solv…

In The secret of my success spielt Michael J. Fox einen jungen Mann vom Land der von der Postabteilung wo er Post verteilte zum Manager aufstieg, der eine Managerfreundin hatte.
Ich hatte tatsächlich mal einen jungen Kollegen vom Land der von der Postabteilung wo er Post verteilte (u.a. an mich, so habe ich ihn kennengelernt) zum Managet aufstieg, der eine Managerfreundin aus den USA hatte. Die habe ich sogar kennengelernt und wir haben einen tollen Abend verbracht, während er abspülte.

SN 2019hnl: A Type IIP Supernova with a Partially Stripped, Low Mass Progenitor
Aidan Martas, Stefano Valenti, Aravind P. Ravi, Yize Dong, K. Azalee Bostroem, Jeniveve Pearson, Manisha Shrestha, Jennifer E. Andrews, David J. Sand, Griffin Hosseinzadeh, Michael Lundquist, Emily Hoang, Darshana Mehta, Nicolas Meza Retamal, Saurabh W. Jha, Daryl Janzen, D. Andrew Howell, Curtis McCully, Daichi Hiramatsu, Craig Pellegrino

SN 2019hnl: A Type IIP Supernova with a Partially Stripped, Low Mass Progenitor
We present optical photometry and spectroscopy of SN 2019hnl. Discovered within ~26 hr of explosion by the ATLAS survey, SN 2019hnl is a typical Type IIP supernova with a peak absolute V band magnitude of -16.7+-0.1 mag, a plateau length of ~107 days, and an early decline rate of 0.0086+-0.0006 mag (50 days)^-1. We use nebular spectroscopy and hydrodynamic modeling with the SNEC, MESA, and STELLA codes to infer that the progenitor of SN 2019hnl was a M_ZAMS ~ 11M_solar red supergiant which prod…

SN 2021tsz: A luminous, short photospheric phase Type II supernova in a low-metallicity host
R. Dastidar, G. Pignata, N. Dukiya, K. Misra, D. A. Howell, M. Singh, C. P. Guti\'errez, C. Pellegrino, A. Kumar, B. Ayala, A. Gangopadhyay, M. Newsome, E. Padilla Gonzalez, K. A. Bostroem, D. Hiramatsu, G. Terreran, C. McCully
https://arxiv.or…

SN 2021tsz: A luminous, short photospheric phase Type II supernova in a low-metallicity host
We present the analysis of the luminous Type II Supernova (SN) 2021tsz, which exploded in a low-luminosity galaxy. It reached a peak magnitude of -18.88 $\pm$ 0.13 mag in the $r$ band and exhibited an initial rapid decline of 4.05 $\pm$ 0.14 mag (100 d)$^{-1}$ from peak luminosity till $\sim$30 d. The photospheric phase is short, with the SN displaying bluer colours and a weak H$α$ absorption component--features consistent with other luminous, short-photospheric phase Type II SNe. A distinct t…