Results 141 to 150 of about 2,500,510 (339)

COSMOLOGICAL MAGNETOHYDRODYNAMIC SIMULATIONS OF GALAXY CLUSTER RADIO RELICS: INSIGHTS AND WARNINGS FOR OBSERVATIONS [PDF]

, 2012
Non-thermal radio emission from cosmic-ray electrons in the vicinity of merging galaxy clusters is an important tracer of cluster merger activity, and is the result of complex physical processes that involve magnetic fields, particle acceleration, gas ...
S. Skillman, Haoting Xu, E. Hallman, B. O’Shea, J. Burns, Hui Li, D. Collins, M. Norman   +7 more
semanticscholar   +1 more source

The Clustering of Galaxies

Publications of the Astronomical Society of the Pacific, 1961
Inspecti of photographs obtained with wide-angle telescopes sho' that the distribution of galaxies over the sky is distinctly nt miform. The observed dumpiness of the distribution of ga ies is believed to be due to a tendency for galaxies to occur in sters. A cluster of galaxies is usually regarded as a distinct >e of aggregate of matter.
openaire   +2 more sources

Active galaxies and cluster gas [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005
Two lines of evidence indicate that active galaxies, principally radio galaxies, have heated the diffuse hot gas in clusters. The first is the general need for additional heating to explain the steepness of the X–ray luminosity–temperature relation in clusters, the second is to solve the cooling–flow problem in cluster cores.
openaire   +3 more sources

Chromosome‐scale genome assembly of the South American fruit fly, Anastrepha fraterculus sp.1

Insect Science, EarlyView.
Anastrepha fraterculus sp. 1 is a major fruit fly pest in Argentina, currently controlled through chemical treatments and traps. This study aims to enhance the genomic understanding of this species to support the development of sterile insect technique as well as the use of innovative technologies.
Máximo Rivarola, Claudia A. Conte, Pierre Berube, Shu‐Huang Chen, M. Cecilia Giardini, Alejandra C. Scannapieco, Fabián H. Milla, María C. Soria, Romina M. Russo, Juan P. Wulff, Haig H. Djambazian, Rolando R. Pomar, Alfred M. Handler, Kostas Bourtzis, Ioannis Ragoussis, Silvia B. Lanzavecchia   +15 more
wiley   +1 more source

The JWST Discovery of the Triply Imaged Type Ia “Supernova H0pe” and Observations of the Galaxy Cluster PLCK G165.7+67.0

The Astrophysical Journal
A Type Ia supernova (SN) at z = 1.78 was discovered in James Webb Space Telescope Near Infrared Camera imaging of the galaxy cluster PLCK G165.7+67.0 (G165; z = 0.35).
Brenda L. Frye, Massimo Pascale, Justin Pierel, Wenlei Chen, Nicholas Foo, Reagen Leimbach, Nikhil Garuda, Seth H. Cohen, Patrick S. Kamieneski, Rogier A. Windhorst, Anton M. Koekemoer, Pat Kelly, Jake Summers, Michael Engesser, Daizhong Liu, Lukas J. Furtak, Maria del Carmen Polletta, Kevin C. Harrington, S. P. Willner, Jose M. Diego, Rolf A. Jansen, Dan Coe, Christopher J. Conselice, Liang Dai, Hervé Dole, Jordan C. J. D’Silva, Simon P. Driver, Norman A. Grogin, Madeline A. Marshall, Ashish K. Meena, Mario Nonino, Rafael Ortiz III, Nor Pirzkal, Aaron Robotham, Russell E. Ryan Jr., Lou Strolger, Scott Tompkins, Christopher N. A. Willmer, Haojing Yan, Min S. Yun, Adi Zitrin   +40 more
doaj   +1 more source

TOWARD UNBIASED GALAXY CLUSTER MASSES FROM LINE-OF-SIGHT VELOCITY DISPERSIONS [PDF]

, 2012
We study the use of red-sequence-selected galaxy spectroscopy for unbiased estimation of galaxy cluster masses by using a publicly available simulated galaxy catalog.
A. Saro, J. Mohr, G. Bazin, K. Dolag
semanticscholar   +1 more source

Stealing galaxies from galaxy clusters

Publications of the Astronomical Society of Australia
Abstract We investigate galaxy groups that reside in the field but have been previously processed by galaxy clusters. Observationally, they would appear to have the same properties as regular field groups at first glance. However, one would expect to find quantifiable differences in processed groups as dynamical interactions within clusters perturb ...
Majda Smole, Miroslav Micic, Ana Mitrašinović   +2 more
openaire   +2 more sources

Genotyping Contemporary Captive and Historical Wild Western Lowland Gorillas Indicates Captive Breeding Is Maintaining Genetic Diversity in a Critically Endangered Primate

Animal Conservation, EarlyView.
Captive populations of threatened species risk losing genetic diversity over time. We evaluated the genetic status of contemporary captive western lowland gorillas (Gorilla gorilla gorilla) at Howletts and Port Lympne and compared this with specimens from a historical wild population.
Jaimie Morris, Tony King, John Hills, Simon C. Harvey, Jane Hopper, Rodrigo Vega   +5 more
wiley   +1 more source

Winter‐active spiders (Clubiona) have a hyperactive antifreeze protein with a unique beta‐solenoid fold

The FEBS Journal, EarlyView.
Antifreeze proteins from winter‐active spiders were purified using their affinity for ice. After LC–MSMS characterization, corresponding transcripts were identified. The antifreeze protein folds as a β‐solenoid with a large flat ice‐binding site on one surface and can bind to ice crystals and prevent their growth at −4 °C.
Laurie A. Graham, Stano Pekár, Ina M. Hainer, Peter L. Davies   +3 more
wiley   +1 more source

Magnetic fields and relativistic electrons fill entire galaxy cluster. [PDF]

Sci Adv, 2022
Botteon A, van Weeren RJ, Brunetti G, Vazza F, Shimwell TW, Brüggen M, Brüggen M, Röttgering HJA, de Gasperin F, Akamatsu H, Bonafede A, Cassano R, Cuciti V, Dallacasa D, Di Gennaro G, Gastaldello F.   +15 more
europepmc   +1 more source