Results 91 to 100 of about 16,096,383 (218)

Galaxy clustering and dynamics from redshift surveys [PDF]

, 1990
The clustering and dynamical properties of the 368 galaxies in the redshift surveys of Metcalfe et al. (1989) and Parker et al. (1986) are investigated. These galaxies were selected from ten high galactic latitude fields complete to a magnitude limit of ...
Hale-Sutton, D, Hale-Sutton, Duncan
core  

Probing cosmic anisotropy from galaxy clusters via the dipole fitting method

European Physical Journal C: Particles and Fields
The cosmological principle, as the cornerstone of the standard cosmological model, requires that the universe be homogeneous and isotropic on large scales.
J. P. Hu, C. Geng, X. D. Jia, Z. Y. Zuo, T. Z. Yang, F. Y. Wang   +5 more
doaj   +1 more source

Clustering analysis of high-redshift luminous red galaxies in Stripe 82 [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
We present a clustering analysis of Luminous Red Galaxies in SDSS Stripe 82. We study the angular 2-point correlation function, of 130,000 LRG candidates via colour-cut selections in izK with the K band coverage coming from UKIDSS LAS. We have used the cross-correlation technique of Newman (2008) to establish the LRG redshift distribution.
Nikoloudakis, N., Shanks, T., Sawangwit, U.   +2 more
openaire   +3 more sources

Searching the Non‐Accreting White Dwarf Population in eROSITA Data

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT eROSITA is the soft X‐ray instrument aboard the Spectrum Roentgen Gamma (SRG) satellite that is most sensitive in the energy range between 0.2 and 2.3 keV. Between December 2019 and December 2021, eROSITA completed four all‐sky surveys, producing all‐sky X‐ray source lists and sky maps of unprecedented depth.
S. Friedrich, C. Maitra, K. Dennerl, A. Schwope, K. Werner, B. Stelzer   +5 more
wiley   +1 more source

Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto, J. F. Steiner, A. Bodaghee, P. Chakraborty, M. Sobolewska, D. R. Pasham, A. Ogorzalek, J. Zuhone, A. Bogdan, M. Vogelsberger   +9 more
wiley   +1 more source

Observations of Galaxy Clustering at High Redshift

, 1998
This paper reviews the current status of measurements of galaxy clustering at high redshifts (z > 0.3). The focus is on the inherent limitations in the observation and interpretation of the ``evolution of clustering''. It is likely that results from the first attempts to characterize galaxy clustering beyond the ``local'' universe have been ...
openaire   +2 more sources

Flexible, Photonic Films of Surfactant‐Functionalized Cellulose Nanocrystals for Pressure and Humidity Sensing

Small Structures, Volume 5, Issue 7, July 2024.
Cellulose nanocrystals are abundant, biodegradable nanoparticles that can self‐assemble into a helical stacking that exhibits structural color. By adding a single surfactant, cellulose nanocrystals can be made compatible with apolar solvents, which are widely used for industrial coatings.
Diogo V. Saraiva, Steven N. Remiëns, Ethan I. L. Jull, Ivo R. Vermaire, Lisa Tran   +4 more
wiley   +1 more source

The relationship between Gas and Galaxies [PDF]

, 2009
We have investigated the 2D 2-point correlation function, ƐAG, between low column density Lya absorbers and galaxies at a redshift z ~ 1 for the first time.
Shone, Allen Maurice
core  

Chemical Evolution of the Universe and its Consequences for Gravitational‐Wave Astrophysics

Annalen der Physik, Volume 536, Issue 2, February 2024.
Population properties of double compact object mergers (especially binary black holes) are sensitive to the metallicity dependent cosmic star formation history. The uncertainty of this quantity cannot be ignored and makes the interpretation of current gravitational wave observations difficult.
Martyna Chruślińska
wiley   +1 more source

Molecular gas in the halo fuels the growth of a massive cluster galaxy at high redshift [PDF]

, 2016
The largest galaxies in the universe reside in galaxy clusters. Using sensitive observations of carbon monoxide, we show that the Spiderweb galaxy - a massive galaxy in a distant protocluster - is forming from a large reservoir of molecular gas.
Röttgering, H., Indermuehle, B., Dannerbauer, H., Carilli, C. L., Norris, Ray P. (R17893), Gullberg, B., Van Moorsel, G., agannathan, P. J, Röttgering, H.J.A., Emonts, B. H. C., Van Moorsel, G. A., Carilli, C., Indermuehle, B. T., Ekers, Ronald D., Ekers, R., Sadler, E., [and thirteen others], Villar-Martin, Montse, Miley, George K., Moorsel, G., Miley, G. K., Norris, R., Seymour, N., Miley, G., Pentericci, .L., Lehnert, M. D., Norris, R. P., Emonts, Bjorn, Ekers, R. D., Mao, M. Y., Lehnert, Matthew D., Emonts, B. H C, Mao, M., Moorsel, Gustaaf A. van, Pentericci, L., Guillard, P., Miley, G.K., Allison, J. R., Röttgering, H. J A, ndermuehle, B. T. I, Villar-Martín, M., Emonts, B., Lehnert, M., Allison, J., Rottgering, H. J. A., Ceverino, D., Sadler, E. M., Jagannathan, P., Seymour, Nick, Pentericci, Laura, Dannerbauer, Helmut, De Breuck, C., Vernet, J.   +52 more
core   +2 more sources