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@DieGesellschafterinLang@swiss.social
2026-08-18 06:42:15

Für Klima- und Hitzeschutz: SPD drängt auf Grundgesetzänderung
br.de/nachrichten/bayern/hitze

@NuclearDisorder@mastodon.social
2026-08-20 06:07:49

Heute vor 52 Jahren: Am 20. August 1974 kam es im #Kernkraftwerk #Beznau zu einer übermäßigen Druckentlastung des Primärkreislaufs aufgrund eines defekten Drucksicherheitsventils. Dank rascher Reaktion der Operatoren konnte ein größerer Störfall verhindert werden.

Kernkraftwerk Beznau, Schweiz
Autor: JoachimKohler-HB
Lizenz: CC BY-SA 4.0
@NuclearDisorder@mastodon.social
2026-08-20 06:07:55

Heute vor 29 Jahren: Am 20. August 1997 kam es im #Kernkraftwerk #Paks zu einem Vorfall, bei dem sich während eines Sicherheitstests eine der 37 Steuerstäbe verklemmte. Die Reaktorsicherheitssysteme funktionierten, jedoch wurde der Vorfall als INES-Stufe 2 eingestuft.

Zwei Blöcke des Kernkraftwerks Paks, Ungarn
Autor/Urheber: Barna Rovács (Rovibroni) - Eigenes Werk
Lizenz: CC BY-SA 4.0
@arXiv_astrophGA_bot@mastoxiv.page
2026-09-09 09:29:35

Euclid: Quick Data Release (Q1) -- Exploring the detailed visual morphology of galaxies in clusters
Mas-Buitrago, Kruk, O'Ryan, Nardone, La Marca, Awad, Baes, Fossati, G\'eron, Ghaffari, Girardi, Lintott, Sorce, Altieri, Durret, Pettorino, Irureta-Goyena, Simmons, Reerink, S\'anchez, Knapen, Shankar, Duran-Camacho, P\'erez-Mart\'inez, Walmsley, Auricchio, Baccigalupi, Baldi, Bardelli, Battaglia, Biviano, Bolzonella, Bonchi, Branchini, Brescia, Brinchmann, Camera, Ca\~nas-Herrera, Capobianco, Carbone, Carretero, Castellano, Castignani, Cavuoti, Cimatti, Colodro-Conde, Congedo, Conselice, Conversi, Copin, Costille, Courbin, Courtois, Cropper, Degaudenzi, De Lucia, Dole, Dubath, Dupac, Dusini, Ealet, Fabricius, Farina, Farinelli, Ferriol, Fosalba, Fotopoulou, Frailis, Franceschi, Fumana, Galeotta, George, Gillis, Giocoli, G\'omez-Alvarez, Gracia-Carpio, Grazian, Grupp, Gwyn, Holmes, Hook, Hormuth, Hornstrup, Huertas-Company, Jahnke, Jhabvala, Joachimi, Kermiche, Kiessling, Kubik, K\"ummel, Kunz, Kurki-Suonio, Le Brun, Ligori, Lilje, Lindholm, Lloro, Mainetti, Mansutti, Marggraf, Martinelli, Martinet, Marulli, Massey, Maurogordato, Medinaceli, Melchior, Meneghetti, Merlin, Meylan, Mora, Moresco, Moscardini, Munari, Neissner, Niemi, Nightingale, Padilla, Paltani, Pasian, Pedersen, Percival, Pezzotta, Pires, Polenta, Poncet, Popa, Pozzetti, Raison, Renzi, Rhodes, Riccio, Romelli, Roncarelli, Rusholme, Saglia, Sakr, S\'anchez, Sapone, Sartoris, Schneider, Schrabback, Scodeggio, Secroun, Sihvola, Simon, Sirignano, Sirri, Tallada-Cresp\'{i}, Taylor, Teplitz, Tereno, Tessore, Toft, Toledo-Moreo, Torradeflot, Tutusaus, Valiviita, Vassallo, Kleijn, Veropalumbo, Wang, Weller, Zacchei, Zamorani, Zerbi, Zucca, Macias-Perez, Sereno
arxiv.org/abs/2609.08962 arxiv.org/pdf/2609.08962 arxiv.org/html/2609.08962
arXiv:2609.08962v1 Announce Type: new
Abstract: Galaxy clusters provide unique laboratories for studying environmental effects on galaxy evolution. The morphology--density ($T$--$\Sigma$) and morphology--cluster-centric radius ($T$--$R$) relations trace how galaxy morphology is influenced by the environment, but previous studies at intermediate redshifts have been limited in both sample size and radial coverage. We use the Euclid Quick Data Release 1 (Q1) visual morphology catalogue to measure the $T$--$\Sigma$ and $T$--$R$ relations for smooth, featured-or-disc, and barred galaxies in known clusters at $0.2\leq z\leq 0.5$, extending this analysis to large cluster-centric distances ($3 R_{500c}$) and studying their dependence on stellar mass. Using photometric redshifts and stellar masses provided by Euclid, we identify 1754 cluster members within $1.5 R_{500c}$, distributed across 71 clusters. We classify the identified galaxies as smooth, featured-or-disc, or barred using the predicted vote fractions provided by the Zoobot deep learning foundation model in the Q1 visual morphology catalogue. We confirm the $T$--$\Sigma$ relation in all the stellar mass ranges studied, with a stronger influence of the cluster environment on galaxy morphology in the densest parts of the cluster and closer to the cluster centre. Beyond $1.5 R_{500c}$, the morphological segregation weakens, with featured-or-disc galaxies overtaking smooth galaxies at the lowest densities, consistent with the growing contribution of field interlopers in the cluster outskirts. For barred galaxies, we find a tentative decline of the bar fraction toward lower densities that is most pronounced for the most massive galaxies. In conclusion, our results show that the cluster environment drives a progressive transformation of galaxy morphology, with the loss of disc structure becoming more pronounced towards the cluster core, where environmental processes act most efficiently.
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@arXiv_astrophGA_bot@mastoxiv.page
2026-09-09 10:57:55

Crosslisted article(s) found for astro-ph.GA. arxiv.org/list/astro-ph.GA/new
[3/3]:
- Physical Law Ecology: mapping multi-mechanism ecologies as the zeroth step of data-driven scienti...
Xiongheng Bian, Xiangyu Cui, Ma Feng, Xiaoyan Shen
arxiv.org/abs/2609.08536 mastoxiv.page/@arXiv_csSC_bot/
- Radial velocity follow-up of \textit{Gaia} astrometric substellar companions: six confirmed brown...
Marcus L. Marcussen, et al.
arxiv.org/abs/2609.08590 mastoxiv.page/@arXiv_astrophEP
- Compton-induced HE -- VHE $\gamma$-rays from pair cascade emissions in the SEDs of radio galaxies...
Mfuphi Ntshatsha, Markus B\"ottcher, Soebur Razzaque
arxiv.org/abs/2609.08787 mastoxiv.page/@arXiv_astrophHE
- Why Azimuthal Averaging Works in Halo Lensing: Symmetry and Power Counting for Nonlinear Shear an...
Keiichi Umetsu (ASIAA)
arxiv.org/abs/2609.08825 mastoxiv.page/@arXiv_astrophCO
- An analysis of four stellar rings
E. Paunzen, et al.
arxiv.org/abs/2609.08942 mastoxiv.page/@arXiv_astrophSR
- Open Clusters as Laboratories for Cool Star Evolution: Highlights from the Cool Stars 23 Splinter...
Deepak Chahal, et al.
arxiv.org/abs/2609.09026 mastoxiv.page/@arXiv_astrophSR
- Detection of episodic Ultra-fast Outflows in the Low-luminosity quasar Mrk 205 using XMM-Newton data
Victoria-Ceballos, Longinotti, Krongold, Lanzuisi, Gudi\~no, Lara-DI
arxiv.org/abs/2609.09028 mastoxiv.page/@arXiv_astrophHE
- TILING I: Field-level Bayesian reconstruction of cosmological initial conditions during the epoch...
Nikolaos Triantafyllou, Andrei Mesinger, Steven Murray, Samuel Gagnon-Hartman
arxiv.org/abs/2609.09102 mastoxiv.page/@arXiv_astrophCO
- Sizing the Universe with DESI Galaxy Sizes: Plain Fundamentals of Fundamental-Plane Lensing
Kun Xu, et al.
arxiv.org/abs/2609.09151 mastoxiv.page/@arXiv_astrophCO
toXiv_bot_toot