Results 91 to 100 of about 679,095 (339)

The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102 [PDF]

, 2017
The precise localization of the repeating fast radio burst (FRB 121102) has provided the first unambiguous association (chance coincidence probability p ≲ 3 × 10−4) of an FRB with an optical and persistent radio counterpart.
S. Tendulkar, C. Bassa, J. Cordes, G. C. Bower, C. Law, S. Chatterjee, E. Adams, S. Bogdanov, S. Burke-Spolaor, B. Butler, P. Demorest, J. Hessels, V. Kaspi, T. Lazio, N. Maddox, B. Marcote, M. Mclaughlin, Z. Paragi, S. Ransom, P. Scholz, A. Seymour, L. Spitler, H. V. Langevelde, R. Wharton   +23 more
semanticscholar   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Full-sky ray-tracing simulation of weak lensing using ELUCID simulations: exploring galaxy intrinsic alignment and cosmic shear correlations

, 2018
The intrinsic alignment of galaxies is an important systematic effect in weak-lensing surveys, which can affect the derived cosmological parameters. One direct way to distinguish different alignment models and quantify their effects on the measurement is
Cui, Weiguang, Jing, Yipeng, Kang, Xi, Li, Guoliang, Li, Shijie, Lim, S. H., Lin, Weipeng, Lu, Yi, Luo, Yu, Mo, Houjun, Tweed, Dylan, Wang, Huiyuan, Wang, Peng, Wang, Yang, Wei, Chengliang, Xia, Qianli, Yang, Xiaohu, Zhang, Youcai   +17 more
core   +1 more source

Modelling feedback from stars and black holes in galaxy mergers [PDF]

, 2004
We describe techniques for incorporating feedback from star formation and black hole (BH) accretion into simulations of isolated and merging galaxies. At present, the details of these processes cannot be resolved in simulations on galactic scales.
V. Springel, T. Matteo, L. Hernquist
semanticscholar   +1 more source

A galaxy lacking dark matter [PDF]

Nature, 2018
Studies of galaxy surveys in the context of the cold dark matter paradigm have shown that the mass of the dark matter halo and the total stellar mass are coupled through a function that varies smoothly with mass.
P. V. Dokkum, S. Danieli, Yotam Cohen, A. Merritt, A. Romanowsky, R. Abraham, J. Brodie, C. Conroy, D. Lokhorst, L. Mowla, E. O’Sullivan, Jielai Zhang   +11 more
semanticscholar   +1 more source

The Gut Commensal Butyricimonas Virosa Modulates Gut Microbiota‐Dependent Thiamine Metabolism and Attenuates Mouse Steatotic Liver Disease

Advanced Science, EarlyView.
This study reveals that dietary stachyose enriches Butyricimonas virosa, effectively attenuating metabolic dysfunction‐associated steatotic liver disease (MASLD). Mechanistically, B. virosa enhances gut thiamine monophosphate synthesis, which elevates hepatic thiamine pyrophosphate levels.
Ningning He, Haoyu Wang, Zizhen Yang, Hui Li, Bei Liu, Kaiwei Chen, Zhinan Wu, Xinnan Zhao, Hewei Liang, Mengmeng Wang, Xiaofang Li, Yiyi Zhong, Haifeng Zhang, Liang Xiao, Karsten Kristiansen, Jixing Peng, Yuanqiang Zou, Shangyong Li   +17 more
wiley   +1 more source

The κ-Model under the Test of the SPARC Database

Universe
Our main goal here is to conduct a comparative analysis between the well-known MOND theory and a more recent model called the κ-model. An additional connection, between the κ-model and two other novel MOND-type theories, Newtonian Fractional-Dimension ...
Gianni Pascoli
doaj   +1 more source

The decade of galaxy formation: pitfalls in the path ahead

, 2010
At the turn of the decade we arguably move from the era of precision cosmology to the era of galaxy formation. One approach to this problem will be via the construction of comprehensive galaxy samples. In this review I take the opportunity to highlight a
Driver, Simon P.
core   +1 more source

The Millennium Galaxy Catalogue: Galaxy Bimodality [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractGalaxy bimodality is caused by the bulge-disc nature of galaxies as opposed to two distinct galaxy classes. This is evident in the colour-structure plane which clearly shows that elliptical galaxies (bulge-only) lie in the red compact peak and late-type spiral galaxies (disc-dominated) lie in the blue diffuse peak.
Driver, Simon P., Liske, Jochen, Graham, Alister W.   +2 more
openaire   +2 more sources

Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample [PDF]

, 2009
The spectroscopic Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) galaxy sample represents the final set of galaxies observed using the original SDSS target selection criteria. We analyse the clustering of galaxies within this sample, including both
W. Percival, B. Reid, D. Eisenstein, N. Bahcall, T. Budavári, J. Frieman, M. Fukugita, J. Gunn, Ž. Ivezić, G. Knapp, R. Kron, J. Loveday, R. Lupton, T. Mckay, A. Meiksin, R. Nichol, A. Pope, D. Schlegel, D. Schneider, D. Spergel, C. Stoughton, M. Strauss, A. Szalay, Max Tegmark, M. Vogeley, D. Weinberg, D. York, I. Zehavi   +27 more
semanticscholar   +1 more source