Results 91 to 100 of about 355,593 (244)

The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity [PDF]

, 2012
We analyse the density field of 264 283 galaxies observed by the Sloan Digital Sky Surve (SDSS)-III Baryon Oscillation Spectroscopic Survey (BOSS) and included in the SDSS Data Release 9 (DR9).
A. Ross, W. Percival, A. Carnero, Gong-Bo Zhao, M. Manera, A. Raccanelli, E. Aubourg, D. Bizyaev, H. Brewington, J. Brinkmann, J. Brownstein, A. Cuesta, L. Costa, D. Eisenstein, G. Ebelke, Hong Guo, J. Hamilton, M. V. Magaña, E. Malanushenko, V. Malanushenko, C. Maraston, F. Montesano, R. Nichol, D. Oravetz, K. Pan, F. Prada, A. Sánchez, L. Samushia, D. Schlegel, D. Schneider, H. Seo, A. Sheldon, A. Simmons, S. Snedden, M. Swanson, D. Thomas, J. Tinker, R. Tojeiro, I. Zehavi   +38 more
semanticscholar   +1 more source

Evolution of Terrestrial Planetary Bodies and Implications for Habitability

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract The terrestrial planetary bodies of our solar system—Mercury, Venus, Earth, and Mars—share a common origin through nebular accretion and early magma ocean differentiation, yet they diverged significantly in geological evolution, tectonic regimes, and habitability.
Peter A. Cawood, Eva E. Stüeken, Priyadarshi Chowdhury, Chris J. Hawkesworth, Jacob A. Mulder   +4 more
wiley   +1 more source

Turbulent Gas-rich Disks at High Redshift: Bars and Bulges in a Radial Shear Flow

The Astrophysical Journal
Recent observations of high-redshift galaxies ( z ≲ 7) reveal that a substantial fraction have turbulent, gas-rich disks with well-ordered rotation and elevated levels of star formation.
Joss Bland-Hawthorn, Thor Tepper-Garcia, Oscar Agertz, Christoph Federrath   +3 more
doaj   +1 more source

Mechanism for the Suppression of Intermediate-Mass Black Holes

, 2010
A model for the formation of supermassive primordial black holes in galactic nuclei with the simultaneous suppression of the formation of intermediate-mass black holes is presented. A bimodal mass function for black holes formed through phase transitions
A. D. Dolgov, A. Dolgov, A. Dolgov, A. King, A. Starobinsky, B. J. McNamara, B. Lanzoni, D. A. Samarchenko, E. Noyola, G. Illingworth, H. Baumgardt, H. Mii, K. Gebhardt, K. J. Mack, L. M. Ozernoy, M. C. Begelman, M. C. Miller, M. G. Haehnelt, M. J. Rees, M. Mapelli, M. Yu. Khlopov, M. Yu. Khlopov, N. Kawakatu, R. R. Islam, R. R. J. Antonucci, S. G. Rubin, S. G. Rubin, S. G. Rubin, S. G. Rubin, S.-J. Rey, T. P. Roberts, V. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, Yu. N. Eroshenko   +39 more
core   +1 more source

Non-Gaussian halo bias and future galaxy surveys [PDF]

, 2008
We forecast constraints on primordial non-Gaussianity achievable from forthcoming surveys by exploiting the scale-dependent halo bias introduced on large scales by non-Gaussian initial conditions.
Afshordi, Bartolo, Carmelita Carbone, Cole, Dalal, Efstathiou, Komatsu, Licia Verde, LoVerde, Matarrese, Matarrese, McDonald, Mo, Pillepich, Robinson, Sabino Matarrese, Scoccimarro, Seo, Slosar, Yadav   +19 more
core   +2 more sources

Primordial black holes as generators of cosmic structures [PDF]

, 2018
Primordial black holes (PBHs) could provide the dark matter in various mass windows below $10^2 M_{\odot}$ and those of $30 M_{\odot}$ might explain the LIGO events. PBHs much larger than this might have important consequences even if they provide only a
B. Carr, J. Silk
semanticscholar   +1 more source

A new genus of jumping spiders (Araneae: Salticidae) inhabiting the South Island New Zealand rocky alpine zone

New Zealand Journal of Zoology, Volume 52, Issue 5, Page 716-795, December 2025.
ABSTRACT The spider family Salticidae (jumping spiders) is among the most heavily researched groups of invertebrates globally. Nevertheless, in Aotearoa New Zealand most species have never been studied. While it is estimated that approximately 200 endemic salticid species are found across the country, only around 50 have been described and fewer than ...
Robin G. Long, Cor J. Vink, Adrian M. Paterson   +2 more
wiley   +1 more source

Evidence of Extreme Ionization Conditions and Low Metallicity in GHZ2/GLASS-Z12 from a Combined Analysis of NIRSpec and MIRI Observations

The Astrophysical Journal
GHZ2/GLASS-z12, one of the most distant galaxies found in JWST observations, has been recently observed with both the NIRSpec and MIRI spectrographs, establishing a spectroscopic redshift z _spec = 12.34 and making it the first system at z > 10 with ...
Antonello Calabrò, Marco Castellano, Jorge A. Zavala, Laura Pentericci, Pablo Arrabal Haro, Tom J. L. C. Bakx, Denis Burgarella, Caitlin M. Casey, Mark Dickinson, Steven L. Finkelstein, Adriano Fontana, Mario Llerena, Sara Mascia, Emiliano Merlin, Ikki Mitsuhashi, Lorenzo Napolitano, Diego Paris, Pablo G. Pérez-González, Guido Roberts-Borsani, Paola Santini, Tommaso Treu, Eros Vanzella   +21 more
doaj   +1 more source

The Brightest of Reionizing Galaxies (BoRG) survey

, 2012
Until now, investigating the early stages of galaxy formation has been primarily the realm of theoretical modeling and computer simulations, which require many physical ingredients and are challenging to test observationally.
Trenti, M.
core   +1 more source

Galaxy Formation from the Primordial Black Holes [PDF]

EPJ Web of Conferences, 2017
Supermassive black hole (SMBH) of size MBH = 106-10M⊙ is common in the Universe and it defines the center of the galaxy. A galaxy and the SMBH are generally thought to have co-evolved. However, the SMBH cannot evolve so fast as commonly observed even at redshift z > 6.
openaire   +2 more sources