Results 71 to 80 of about 48,997 (217)

The Radio Luminosity Function of Cluster Radio Halos [PDF]

, 2002
A significant fraction of galaxy clusters exhibits cluster wide radio halos. We give a simple prediction of the local and higher redshift radio halo luminosity function (RHLF) on the basis of (i) an observed and a theoretical X-ray cluster luminosity ...
Ensslin, Torsten A., Roettgering, Huub
core   +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

Environmental Effects on the Stellar Mass Function in a z ∼ 3.3 Overdensity of Galaxies in the COSMOS Field

The Astrophysical Journal
We present an analysis of the number density of galaxies as a function of stellar mass (i.e., the stellar mass function (SMF)) in the COSMOS field at z ∼ 3.3, making a comparison between the SMF in overdense environments and the SMF in the coeval field ...
Ben Forrest, Brian C. Lemaux, Ekta A. Shah, Priti Staab, Roy R. Gal, Lori M. Lubin, M. C. Cooper, Olga Cucciati, Denise Hung, Ian McConachie, Adam Muzzin, Gillian Wilson, Sandro Bardelli, Letizia P. Cassarà, Wenjun Chang, Finn Giddings, Emmet Golden-Marx, Nimish Hathi, Stephanie M. Urbano Stawinski, Elena Zucca   +19 more
doaj   +1 more source

Constraining the Redshift Evolution of FIRST Radio Sources in RCS1 Galaxy Clusters

, 2010
We conduct a statistical analysis of the radio source population in galaxy clusters as a function of redshift by matching radio sources from the Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) catalog with 618 optically-selected galaxy ...
Barrientos, L. Felipe, Gladders, Michael D., Gralla, Megan B., Yee, H. K. C.   +3 more
core   +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

Modeling and Subtracting Diffuse Cluster Light in JWST Images: A Relation between the Spatial Distribution of Globular Clusters, Dwarf Galaxies, and Intracluster Light in the Lensing Cluster SMACS 0723

The Astrophysical Journal
We present a methodology for modeling and removing light from cluster galaxies and intracluster light (ICL) from James Webb Space Telescope images of gravitational lensing clusters.
Nicholas S. Martis, Ghassan T. E. Sarrouh, Chris J. Willott, Roberto Abraham, Yoshihisa Asada, Maruša Bradač, Gabriel B. Brammer, Guillaume Desprez, Anishya Harshan, Adam Muzzin, Gaël Noirot, Gregor Rihtaršič, Marcin Sawicki, Victoria Strait   +13 more
doaj   +1 more source

Redshift Evolution of the Feedback–Cooling Equilibrium in the Core of 48 SPT Galaxy Clusters: A Joint Chandra–SPT–ATCA Analysis

The Astrophysical Journal, 2023
We analyze the cooling and feedback properties of 48 galaxy clusters at redshifts 0.4 < z < 1.3 selected from the South Pole Telescope (SPT) catalogs to evolve like the progenitors of massive and well-studied systems at z ∼ 0. We estimate the radio power
F. Ruppin, M. McDonald, J. Hlavacek-Larrondo, M. Bayliss, L. E. Bleem, M. Calzadilla, A. C. Edge, M. D. Filipović, B. Floyd, G. Garmire, G. Khullar, K. J. Kim, R. Kraft, G. Mahler, R. P. Norris, A. O’Brien, C. L. Reichardt, T. Somboonpanyakul, A. A. Stark, N. Tothill   +19 more
doaj   +1 more source

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

Galaxy clusters discovered with a Sunyaev-Zel'dovich effect survey

, 2009
The South Pole Telescope (SPT) is conducting a Sunyaev-Zel'dovich (SZ) effect survey over large areas of the southern sky, searching for massive galaxy clusters to high redshift.
A. A. Stark, A. Loehr, A. T. Crites, A. T. Lee, A. Zenteno, B. A. Benson, B. Stalder, Benson, Bonamente, C. L. Chang, C. L. Reichardt, C. Pryke, C.-C. Ngeow, Carlstrom, Coble, E. M. Leitch, E. Shirokoff, Ebeling, G. P. Holder, H. G. Spieler, H.-M. Cho, Haehnelt, Haiman, Halverson, Herranz, Holder, Holzapfel, J. D. Hrubes, J. D. Vieira, J. E. Carlstrom, J. E. Ruhl, J. J. McMahon, J. J. Mohr, J. Mehl, K. A. Aird, K. K. Schaffer, K. Vanderlinde, L. E. Bleem, L. Shaw, M. A. Dobbs, M. Joy, M. Lueker, Majumdar, Mason, Molnar, Motl, N. W. Halverson, Nagai, Nagai, Navarro, Nolta, O. Zahn, P. A. R. Ade, R. Keisler, Reichardt, Runyan, S. Padin, S. S. Meyer, Sayers, Shaw, Sunyaev, Sunyaev, T. de Haan, T. E. Montroy, T. M. Crawford, T. M. Lanting, T. Plagge, Voges, Voges, W. L. Holzapfel, Wang, White, Z. Staniszewski   +72 more
core   +1 more source

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