Results 21 to 30 of about 1,782 (160)

AstroMMBench: A Benchmark for Evaluating Multimodal Large Language Model Capabilities in Astronomy

Universe
Astronomical image interpretation requires not only visual perception, but also familiarity with domain-specific representations, observational conventions, and astrophysical reasoning.
Jinghang Shi, Xiaoyu Tang, Yang Huang, Yuyang Li, Yanxia Zhang, Xiao Kong, Caizhan Yue, A-Li Luo   +7 more
doaj   +1 more source

High-performance payload data handling system for Gaia [PDF]

, 2006
Gaia is the most ambitious space astrometry mission currently envisaged and is a technological challenge in all its aspects. We describe a proposal for the payload data handling system of Gaia, as an example of a high-performance, real-time, concurrent ...
Luri Carrascoso, Xavier, Portell i de Mora, Jordi, García-Berro Montilla, Enrique   +2 more
core   +1 more source

The Stellar Observations Network Group (SONG)

Astronomy & Astrophysics
Context. The Stellar Observations Network Group (SONG) network has operated for more than a decade, providing long-baseline high-cadence spectroscopic observations of bright stars and the Sun.
Lund M. N., Grundahl F., Fredslund M. S., Pallé P. L., Simon-Diaz S., Christensen-Dalsgaard J., Wittenmyer R. A., Deng L., Jackiewicz J., Kjeldsen H., Antoci V., Korhonen H., Albrecht S. H., Wang K., Rudrasingam J., Handberg R., Bedding T. R., Rørsted J. L., Sørensen P. M., Wright D. J., Holtzman J. A., Klusmeyer J., Frandsen S., Weiss E., Jessen-Hansen J., Heeren P., Tronsgaard R., Arentoft T., Beck P. G., Jørgensen U. G., Sørensen A. N., Andersen M. I., Kjærgaard P., Bizzarro M., Butler R. P., Corsaro E., García R. A., Stello D., Murphy S., Horner J., Martell S., Martínez González M. J., Casagrande L., Lattanzio J.   +43 more
doaj   +1 more source

Principal Component‐Based Classification of Blazar Candidates of Uncertain Type in the 4FGL/LAT

Astronomische Nachrichten, EarlyView.
ABSTRACT We adopted principal component analysis (PCA), linear discriminant analysis (LDA), and support vector machines (SVM), to study classification for a sample of 2708 Fermi blazars: 1142 BL Lac objects (BLLs), 759 flat spectrum radio quasars (FSRQs), and 807 blazar candidates of uncertain type (BCUs).
Wen‐Xin Yang, Guo‐Hai Chen, Jing‐Tian Zhu, Hong‐Guang Wang, Denis Bastieri, Xu‐Hong Ye, Jing‐Chao Liang, De‐Xiang Wu, Jiang‐He Yang, Anton A. Strigachev, Rumen S. Bachev, Jun‐Jie Feng, Yi Liu, Jun‐Hui Fan   +13 more
wiley   +1 more source

NATO Advanced Study Institute on Optics in Astrophysics

, 2005
Astrophysics is facing challenging aims such as deep cosmology at redshift higher than 10 to constrain cosmology models, or the detection of exoplanets, and possibly terrestrial exoplanets, and several others.
Foy, Françoise Claude, Foy, Renaud
core   +1 more source

EBHIS Local Volume Galaxy Hi Survey (LVGHIS)

Astronomische Nachrichten, EarlyView.
ABSTRACT Here, we present the “Local Volume Galaxy Hi Survey” (LVGHIS). It is based on the first data release of the Milky Way portion of the Effelsberg Bonn Hi‐Survey (EBHIS). We homogeneously measured the mass and dynamics of the local volume galaxies within the radial velocity limit of |vLSR|≤600kms−1$$ \mid {v}_{\mathrm{LSR}}\mid \le 600\kern0.6em \
V. A. Schulz, J. Kerp, A. C. Schröder, B. Winkel   +3 more
wiley   +1 more source

Laboratory astrophysics and microanalysis with NTD-germanium-based X-ray microcalorimeters

, 2000
With the ability to create cosmic plasma conditions in the laboratory it is possible to investigate the dependencies of key diagnostic X-ray lines on density, temperature, and excitation conditions that exist in astrophysical sources with X-ray optics ...
Madden, N, Murray, S, Beeman, J, Bandler, S, Schnopper, H, Porto, J., Landis, D, Haller, E, Silver, E, Takacs, E, BARBERA, Marco, Tucker, G, Gillaspy, J, M Barbera, D Landis, J Gillaspy, E Takacs, J Porto, H Schnopper, E Haller, G Tucker, N Madden, S Bandler, J Beeman, S Murray, E Silver   +25 more
core   +1 more source

Case Study of a Fly's Eye Homogenizer for the Calibration Illumination of Integral Field Units

Astronomische Nachrichten, EarlyView.
ABSTRACT Integral‐field unit spectrographs require a homogeneous calibration illumination of the field of view for proper flat and wavelength calibration (e.g., BlueMUSE which is currently under development for the VLT). This article presents the adaptation of a fly's eye homogenizer, frequently used in laser applications, to this task in astronomical ...
Daniel P. Sablowski, Carlos E. Rodriguez Alvarez, Dennis Plueschke, Andreas Kelz, Svend M. Bauer   +4 more
wiley   +1 more source

Observational astrophysics

, 2012
This is the updated, widely revised, restructured and expanded third edition of Léna et al.'s successful work Observational Astrophysics. It presents a synthesis on tools and methods of observational astrophysics of the early 21st century.
Pelat, Didier, Mignard, François, Rouan, Daniel, Lebrun, François, Léna, Pierre   +4 more
core   +1 more source

The absence of women's scientific contributions in core UK pre‐university science qualifications

British Educational Research Journal, EarlyView.
Abstract Despite their groundbreaking contributions to our understanding of the natural world and the universe, women's roles in biology, chemistry, physics, astronomy, environmental science and geology remain largely absent from standard educational specifications in the United Kingdom (UK), particularly at Key Stage 4 (KS4) and Key Stage 5 (KS5), or ...
G. J. Cooke, S. B. White, S. Buttigieg, N. Lowson, S. Galaudage, A. Battisti, L. Kelsey, K. Ross   +7 more
wiley   +1 more source