POL-EL: Twist - Drei Hektar Gerstenfeld bei Brand beschädigt Twist (ots) - Am Dienstag, dem 21.07.2026, kam es gegen 16:25 Uhr auf einem Acker im Bereich der Bauernsiedlung in Twist zu einem Brand. Nach bisherigen Erkenntnissen geriet aus bislang ungeklärter Ursache ein Gerstenfeld in Brand. Die Flammen ... https://www.…
fascism-washing or something sad face
https://cosocial.ca/@mhoye/116937498616819671
Estimating stellar metallicities from Gaia DR3 XP data using LAMOST DR10
Divyansh Srivastava, Andrzej Niedzielski, Rodolfo Smiljanic
https://arxiv.org/abs/2607.18707 https://arxiv.org/pdf/2607.18707 https://arxiv.org/html/2607.18707
arXiv:2607.18707v1 Announce Type: new
Abstract: Gaia DR3 provides astrophysical parameters for hundreds of millions of stars, but the metallicities [M/H] from its GSP-Phot module suffer from systematic biases. We estimate stellar metallicities from Gaia DR3 data using the homogeneous spectroscopic iron abundances [Fe/H] of LAMOST DR10 as training labels. We cross-matched LAMOST DR10 with Gaia DR3 and trained a gradient-boosted decision-tree regressor (XGBoost) on 1.20 million AFGK stars using only Gaia-derived inputs and proxies. We validated the estimates on held-out LAMOST stars, GALAH DR4, APOGEE DR17, and 46 open clusters, and applied the model to measure the radial metallicity gradient of the Milky Way disk. On the held-out test set, the model achieves a mean absolute error of 0.052 dex and $R^2=0.94$ with negligible bias, compared with 0.242 dex for GSP-Phot on the same stars. The estimates transfer well to external surveys, with mean absolute errors of 0.066 dex for GALAH and 0.068 dex for APOGEE. For open clusters, the median difference between our estimated [Fe/H] and spectroscopic values is 0.041 dex, smaller than both GSP-Phot (0.248 dex) and a previous APOGEE-trained XGBoost model (0.067 dex). Applied to the Galactic disk, our model recovers a broken thin-disk radial gradient, with inner and outer slopes of $ 0.119$ and $-0.058\,\mathrm{dex\,kpc^{-1}}$, respectively, and a break near 5.9 kpc, as well as an open-cluster gradient of $-0.066\,\mathrm{dex\,kpc^{-1}}$; both agree with previous high-resolution spectroscopic studies. Our [Fe/H] estimates are accurate to 0.05-0.07 dex for AFGK stars with $[\mathrm{Fe/H}]\gtrsim-2.5$; below this limit, the predictions should be treated as lower bounds. The catalogue and trained model are publicly available on Zenodo and are suitable for chemical studies of the Milky Way.
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Since it was relevant to a discussion I just had on here and is something most people probably haven't thought about much (unless you've taken one of a handful of philosophy classes), I thought I'd try to lay out a key piece of Descartes' Meditations (#philosophy
Interesting article in the Economist, don't necessarily agree,
https://www.…
Djokovic, 39, came through a stern test from No. 3 seed Félix Auger-Aliassime — as well as a left leg issue and a closing roof.
39-year-old seven-time Wimbledon champion Novak Djokovic came through a five-set, five-hour epic Tuesday on Centre Court
to defeat Félix Auger-Aliassime 7-6(10), 3-6, 6-3, 6-7(4), 7-6(4) and advance to the semifinals, six minutes before the 11 p.m. curfew.
There, he will face his toughest hurdle yet on the path to a record 25th Grand Slam title i…
Sources: Stripe and PE firm Advent International have jointly offered $60.50/share to acquire PayPal, a 28% premium to Tuesday's close, valuing it at $53B (Milana Vinn/Reuters)
https://www.reuters.com/business/finance/s
Raiders agree to three-year, $45 million deal with tight end Michael Mayer https://www.reviewjournal.com/sports/raiders/raiders-agree-to-three-year-45-million-deal-with-tight-end-michael-mayer-3885500/
Informe PISA : La pantalla mató la comprensión lectora: cómo el cerebro se estš adaptando a un entorno digital | Educación | EL PAÍS
https://elpais.com/educacion/2026-09-14/la-pantalla-mato-la-compren…
Replaced article(s) found for astro-ph.CO. https://arxiv.org/list/astro-ph.CO/new
[1/2]:
- Updated constraints on the primordial power spectrum at sub-Mpc scales
Torsten Bringmann, Djuna Croon, Sergio Sevillano Mu\~noz
https://arxiv.org/abs/2506.20704 https://mastoxiv.page/@arXiv_astrophCO_bot/114754296832362376
- $\texttt{SBi3PCF:}$ Simulation-based inference with the integrated 3PCF
David Gebauer, Anik Halder, Stella Seitz, Dhayaa Anbajagane
https://arxiv.org/abs/2510.13805 https://mastoxiv.page/@arXiv_astrophCO_bot/115383198732999954
- Galaxy Phase-Space and Field-Level Cosmology: The Strength of Semi-Analytic Models
Natal\'i S. M. de Santi, et al.
https://arxiv.org/abs/2512.10222 https://mastoxiv.page/@arXiv_astrophCO_bot/115705840924013174
- A high-significance detection of primordial tidal torque imprints
Sheng, Yu, Bao, Chen, Shao, Guo, Chen, Wang, Pen, Wang, Yang
https://arxiv.org/abs/2512.11383 https://mastoxiv.page/@arXiv_astrophCO_bot/115722821408944705
- Joint constraints on cosmic birefringence and early dark energy from ACT, Planck, DESI, and Panth...
Lu Yin, Guo-Hong Du, Tian-Nuo Li, Xin Zhang
https://arxiv.org/abs/2601.13624 https://mastoxiv.page/@arXiv_astrophCO_bot/115932398559254092
- A Reusable Hierarchical Framework for Joint Inference of Ultralight-Dark-Matter Mass and Core-Hal...
Prasun Panthi, Md Shahrier Islam Arham
https://arxiv.org/abs/2605.11600 https://mastoxiv.page/@arXiv_astrophCO_bot/116566279481155953
- GWTC-5.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation
The LIGO Scientific Collaboration, et al.
https://arxiv.org/abs/2605.27227 https://mastoxiv.page/@arXiv_astrophCO_bot/116645483007429258
- Constraints on the gravitational potential from DESI DR2 BAO and its implications for the local v...
Indranil Banik, Jos\'e Antonio N\'ajera, Harry Desmond
https://arxiv.org/abs/2606.02712
- Lyman-$\alpha$ forest constraints on pure and mixed fuzzy dark matter
Jianxiang Liu, Yan Gong, Xingchen Zhou
https://arxiv.org/abs/2606.06969 https://mastoxiv.page/@arXiv_astrophCO_bot/116713433278473918
- The Manticore Project II: Bayesian digital twins of cosmic structure across the SDSS and BOSS vol...
Stuart McAlpine, Jens Jasche, Guilhem Lavaux, Ludvig Doeser, Arthur Loureiro
https://arxiv.org/abs/2606.10020 https://mastoxiv.page/@arXiv_astrophCO_bot/116724751031288980
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