Tootfinder

Unified Spectrospatial Forward Models: Spatially Continuous Maps of Weak Emission Lines in the Rosette Nebula with SDSS-V LVM
Thomas Hilder, Andrew R. Casey, Julianne J. Dalcanton, Kathryn Kreckel, Amelia M. Stutz, Amrita Singh, Guillermo A. Blanc, Sebasti\'an F. S\'anchez, J. E. M\'endez-Delgado, Andrew K. Saydjari, Luciano Vargas-Herrera, Niv Drory, Dmitry Bizyaev, Jos\'e G. Fern\'andez-Trincado, Carlos G. Rom\'an-Z\'u\~niga, Juna A. Kollmeier, Evelyn J. J…

Unified Spectrospatial Forward Models: Spatially Continuous Maps of Weak Emission Lines in the Rosette Nebula with SDSS-V LVM
Analyses of IFU data are typically performed on a per-spaxel basis, with each spectrum modelled independently. For low signal-to-noise (S/N) features such as weak emission lines, estimating properties is difficult and imprecise. Arbitrary binning schemes boost S/N at the cost of resolution, and risk introducing biases. We present a general forward-modelling approach that assumes spectra close on the sky are more similar than distant ones, and so can be modelled jointly. These "spectrospatial" m…

Dark Energy Survey Year 6 Results: improved mitigation of spatially varying observational systematics with masking
M. Rodr\'iguez-Monroy, N. Weaverdyck, J. Elvin-Poole, I. Sevilla-Noarbe, A. Carnero Rosell, A. Drlica-Wagner, S. Avila, M. R. Becker, K. Bechtol, M. Crocce, M. Gatti, J. Mena-Fern\'andez, A. Porredon, D. Sanchez Cid, M. Yamamoto, M. Aguena, S. S. Allam, O. Alves, F. Andrade-Oliveira, D. Bacon, J. Blazek, S. Bocquet, D. Brooks, R. Camilleri, J. Carretero, R. Cawthon…

Dark Energy Survey Year 6 Results: improved mitigation of spatially varying observational systematics with masking
As photometric surveys reach unprecedented statistical precision, systematic uncertainties increasingly dominate large-scale structure probes relying on galaxy number density. Defining the final survey footprint is critical, as it excludes regions affected by artefacts or suboptimal observing conditions. For galaxy clustering, spatially varying observational systematics, such as seeing, are a leading source of bias. Template maps of contaminants are used to derive spatially dependent correction…

On the H-1B fee, Jensen Huang says he's "glad" to see "Trump making the moves he's making"; Sam Altman says "outlining financial incentives seems good to me" (Jennifer Elias/CNBC)
https://www.cnbc.com/2025/09/22/nvidia-ope

'We need the smartest people': Nvidia, OpenAI CEOs react to Trump's H-1B visa fee
"We want all the brightest minds to come to the U.S. and remember immigration is the foundation of the American Dream," Nvidia CEO Jensen Huang said Monday.

Watched "Mars Express" for the second time because I noticed that I had bought it last year on Prime. I liked it just as much as the first time I saw it.
It has a nice "Ghost in the Shell" vibe going on but it's less philosophical. It makes up for it with great animation and smooth camera moves as well as lots of imaginative sci-fi tech. An exceptional non-Japanese gem in the animated sci-fi genre!

ALMA-IMF. XXI.: N$_2$H$^ $ kinematics in the G012.80 protocluster: Evidence for filament rotation and evolution
J. Salinas, A. M. Stutz, R. H. \'Alvarez-Guti\'errez, N. A. Sandoval-Garrido, F. Louvet, R. Galv\'an-Madrid, F. Motte, M. Armante, T. Csengeri, J. Braine, A. Ginsburg, M. Valeille-Manet, L. Bronfman, P. Sanhueza, D. D\'iaz, G. Busquet, A. Koley, M. Bonfand, M. Fern\'andez-L\'opez, N. Castro-Toledo, R. Veyry, G. Bernal-Mesina

ALMA-IMF. XXI.: N$_2$H$^+$ kinematics in the G012.80 protocluster: Evidence for filament rotation and evolution
(abridged) We aim to characterize kinematic processes in the G012.80 protocluster. We principally focus on the N$_2$H$^+$(1$-$0) emission to trace the dense and cold gas. Additionally, we use lines such as DCN(3$-$2), H41$α$, C$^{18}$O(1$-$0), and SiO(5$-$4), as well as continuum maps. We perform a N$_2$H$^+$ hyperfine spectral line fitting to analyze multiple velocity components and spectral parameters. We estimate velocity gradients, column densities, and line-mass profiles for the two main …

Miljoonat yhdessä muovisaastetta vastaan! Muovijätettä tuotetaan silmittömiä määriä ja päätyessään luontoon se hajoaa mikromuoviksi ja uhkaa elämää. Kansainvälinen muovisopimus asettaisi rajat tarpeettomalle kertakäyttömuoville. Pysäytetään muovikriisi! https://www.greenpeace.org/finland/toimi/i

Muovisaaste seis - Greenpeace Suomi
On aika pysäyttää tarpeettoman muovin tuottaminen ja sen päätyminen luontoon. Tästä riippuu sekä planeetan että ihmiskunnan terveys ja hyvinvointi.

Entanglement certification from moments of positive maps
Qing-Hua Zhang, Xiaoyu Ma, Shao-Ming Fei
https://arxiv.org/abs/2508.09766 https://arxiv.org/pdf/25…

Entanglement certification from moments of positive maps
Entanglement certification is crucial in physical experiments, particularly when only partial knowledge of the quantum state is available. In this context, we present an entanglement criterion based on positive but not completely positive maps, which eliminates the need to identify eigenvalues of the output state. Notably, the Faddeev-LeVerrier algorithm establishes a relationship between the coefficients of characteristic polynomials and the moments of a matrix. This enables the existence of n…

Distributed Stochastic Model Predictive Control with Temporal Aggregation for the Joint Dispatch of Cascaded Hydropower and Renewables
Luca Santosuosso, Sonja Wogrin
https://arxiv.org/abs/2510.11998

Distributed Stochastic Model Predictive Control with Temporal Aggregation for the Joint Dispatch of Cascaded Hydropower and Renewables
This paper addresses the real-time energy dispatch of a hybrid system comprising cascaded hydropower plants, wind, and solar units, jointly participating in the day-ahead energy market under inflow, renewable generation, and price uncertainties. Traditional scenario-based stochastic model predictive control (MPC) faces severe computational bottlenecks due to the complexity arising from the temporal, asset, and scenario dimensions of this control problem. To address this, we propose a novel cont…

The PHANGS-MUSE/HST-Halpha Nebulae Catalogue
A. T. Barnes, R. Chandar, K. Kreckel, F. Belfiore, D. Pathak, D. Thilker, A. K. Leroy, B. Groves, S. C. O. Glover, R. McClain, A. Amiri, Z. Bazzi, M. Boquien, E. Congiu, D. A. Dale, O. V. Egorov, E. Emsellem, K. Grasha, J. Gonzalez Lobos, K. Henny, H. He, R. Indebetouw, J. C. Lee, J. Li, F. -H. Liang, K. Larson, D. Maschmann, S. E. Meidt, J. E. M\'endez-Delgado, J. Neumann, H. -A. Pan, M. Querejeta, E. Rosolowsky, S. K. Sarbadhicary, F. …

The PHANGS-MUSE/HST-Halpha Nebulae Catalogue
We present the PHANGS-MUSE/HST-Halpha nebulae catalogue, comprising 5177 spatially resolved nebulae across 19 nearby star-forming galaxies (< 20 Mpc), based on high-resolution Halpha imaging from HST, homogenised to a fixed 10 pc resolution and sensitivity. Combined with MUSE spectroscopy, this enables robust classification of 4882 H II regions and separation of planetary nebulae and supernova remnants. Electron densities for 2544 H II regions are derived using [S II] diagnostics, and nebular s…

A New Boundary Condition on Reionization
Sarah Libanore, Ely D. Kovetz, Julian B. Munoz, Yonatan Sklansky, Emilie Th\'elie
https://arxiv.org/abs/2509.08886 https://

A New Boundary Condition on Reionization
The epoch of reionization (EoR) marks the last phase transition of hydrogen in our Universe, as it evolves from cold and neutral to hot and ionized in the intergalactic medium (IGM). While its endpoint and duration can be estimated from current observations, albeit with large uncertainties, there is no known avenue to constrain its onset. We propose a novel method based on the Pearson cross-correlation coefficient between 21-cm brightness temperature maps and line-intensity maps tracing star-fo…