Results 91 to 100 of about 210,144 (261)

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Extended Lyman α haloes around individual high-redshift galaxies revealed by MUSE [PDF]

, 2015
We report the detection of extended Ly alpha emission around individual star-forming galaxies at redshifts z = 3-6 in an ultradeep exposure of the Hubble Deep Field South obtained with MUSE on the ESO-VLT.
L. Wisotzki, R. Bacon, J. Blaizot, J. Brinchmann, J. Brinchmann, E. C. Herenz, J. Schaye, N. Bouché, S. Cantalupo, T. Contini, T. Contini, C. Carollo, J. Caruana, J.-B. Courbot, J.-B. Courbot, E. Emsellem, E. Emsellem, S. Kamann, J. Kerutt, F. Leclercq, S. Lilly, V. Patr'icio, C. Sandin, M. Steinmetz, L. Straka, T. Urrutia, A. Verhamme, A. Verhamme, P. Weilbacher, M. Wendt   +29 more
semanticscholar   +1 more source

Unified Analysis of Fermionic Tunneling, Barrow‐Exponential Entropy Corrections, and Plasma Lensing in Carrollian Reissner‐Nordström Spacetime

Annalen der Physik, Volume 538, Issue 3, March 2026.
Carrollian Reissner‐Nordström black holes are investigated through fermionic tunneling, entropy‐corrected thermodynamics, and plasma‐modified gravitational lensing. The generalized uncertainty principle introduces minimal‐length corrections to the Hawking temperature, while the combined Barrow‐Exponential entropy reveals smooth thermodynamic crossovers
Erdem Sucu, İzzet Sakallı, Yusuf Sucu
wiley   +1 more source

Galaxy bulges at mid- and high-redshift [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractBulges are a major galaxy component in the nearby universe, and are one of the primary features that differentiates and defines galaxies. The origin of bulges can be directly probed in part by examining distant galaxies to search for high redshift bulges, and to study the properties of bulges in formation.
openaire   +2 more sources

A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos

Annalen der Physik, Volume 538, Issue 3, March 2026.
A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças, Francisco Tiago Barboza Sampaio, Francisco Bento Lustosa, Leonardo Tavares de Oliveira, C. R. Muniz   +4 more
wiley   +1 more source

First Detection of CO Isotopologues in a High-redshift Main-sequence Galaxy: Evidence of a Top-heavy Stellar Initial Mass Function

The Astrophysical Journal
Recent observations and theories have presented a strong challenge to the universality of the stellar initial mass function (IMF) in extreme environments. A notable example has been found for starburst conditions, where evidence favors a top-heavy IMF, i.
Ziyi Guo, Zhi-Yu Zhang, Zhiqiang Yan, Eda Gjergo, Allison W. S. Man, R. J. Ivison, Xiaoting Fu, Yong Shi   +7 more
doaj   +1 more source

ON THE SHAPES AND STRUCTURES OF HIGH-REDSHIFT COMPACT GALAXIES [PDF]

The Astrophysical Journal, 2012
9 pages, 3 figure, accepted for publication in ...
Chevance, Melanie, Weijmans, Anne-Marie, Damjanov, Ivana, Abraham, Roberto G., Simard, Luc, Van Den Bergh, Sidney, Caris, Evelyn, Glazebrook, Karl   +7 more
openaire   +4 more sources

Millimetre/submillimetre-wave emission line searches for high-redshift galaxies [PDF]

, 2000
The redshifted spectral line radiation emitted from both atomic fine-structure and molecular rotational transitions in the interstellar medium (ISM) of high-redshift galaxies can be detected in the centimetre, millimetre and submillimetre wavebands. Here
Blain, Andrew W., Bock, J. J., Frayer, D. T., Scoville, N. Z.   +3 more
core   +2 more sources

Logarithmic and Strong Coupling Models in Weyl‐Type f(Q,T)$f(Q,T)$ Gravity

Annalen der Physik, Volume 538, Issue 1, January 2026.
This work explores Weyl‐type f(Q,T) gravity using recent observational datasets — CC, Pantheon+, Union 3.0, and DESI DR2. Through MCMC analysis of logarithmic and strong coupling models, the study reveals a transition from deceleration to acceleration, quintessence‐to‐phantom dynamics, and late‐time consistency with LCDM, offering a geometry‐driven ...
Rahul Bhagat, S. K. Tripathy, B. Mishra
wiley   +1 more source

Far-infrared constraints on the contamination by dust-obscured galaxies of high-z dropout searches [PDF]

, 2011
The spectral energy distributions (SED) of dusty galaxies at intermediate redshift may look similar to very high-redshift galaxies in the optical/near infrared (NIR) domain.
Blain, A. W., Boone, F.
core