Results 101 to 110 of about 88,791 (299)

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

Turbulent heating in galaxy clusters brightest in X-rays [PDF]

Nature, 2014
published in ...
I. Zhuravleva, E. Churazov, A. A. Schekochihin, S. W. Allen, P. Arévalo, A. C. Fabian, W. R. Forman, J. S. Sanders, A. Simionescu, R. Sunyaev, A. Vikhlinin, N. Werner   +11 more
openaire   +9 more sources

A Catalog of 1.58 Million Clusters of Galaxies Identified from the DESI Legacy Imaging Surveys

The Astrophysical Journal Supplement Series
Based on the DESI Legacy Imaging Surveys released data and available spectroscopic redshifts, we identify 1.58 million clusters of galaxies by searching for the overdensity of the stellar mass distribution of galaxies within redshift slices around ...
Z. L. Wen, J. L. Han
doaj   +1 more source

High radio-frequency properties and variability of brightest cluster galaxies [PDF]

, 2015
We consider the high radio-frequency (15–353 GHz) properties and variability of 35 brightest cluster galaxies (BCGs). These are the most core-dominated sources drawn from a parent sample of more than 700 X-ray selected clusters, thus allowing us to ...
M. Hogan, M. Hogan, M. Hogan, A. Edge, J. Geach, K. Grainge, J. Hlavacek-Larrondo, J. Hlavacek-Larrondo, T. Hovatta, T. Hovatta, A. Karim, B. McNamara, B. McNamara, C. Rumsey, H. Russell, P. Salom'e, H. Aller, M. Aller, D. Benford, A. Fabian, A. Readhead, E. Sadler, R. D. E. Saunders   +22 more
semanticscholar   +1 more source

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini, A. Burgasser   +10 more
wiley   +1 more source

Accuracy of the Photometric Redshifts of Brightest Cluster Galaxies Identified in the CFHTLS-W1

Journal of Advanced Research in Natural and Applied Sciences
We determine the accuracy of photometric redshifts for the brightest cluster galaxies (BCGs) identified in the W1 field of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS).
Sinan Aliş
doaj   +1 more source

Solar Flare Activity, 1937–2024: Introducing the New Hemispheric Solar Flare Index (hSFI) in the Context of 2024's Major Solar Storm Events

Space Weather, Volume 23, Issue 11, November 2025.
Abstract A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but that the southern hemisphere has dominated from Solar Cycle 22 to present.
V. M. Velasco Herrera, W. Soon, S. Knoška, A. Özgüç, G. Velasco Herrera, H. Yeşilyaprak, N. Babynets, M. Švanda, J. Muraközy, S. Qiu, D. Riveros‐Rosas, R. Connolly, M. Connolly, A. Tlatov, L. Cappellotto   +14 more
wiley   +1 more source

High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275

The Astrophysical Journal
We  present new high-spectral-resolution observations ( R = λ /Δ λ = 7000) of the filamentary nebula surrounding NGC 1275, the central galaxy of the Perseus cluster.
Benjamin Vigneron, Julie Hlavacek-Larrondo, Carter Lee Rhea, Marie-Lou Gendron-Marsolais, Jeremy Lim, Jake Reinheimer, Yuan Li, Laurent Drissen, Greg L. Bryan, Megan Donahue, Alastair Edge, Andrew Fabian, Stephen Hamer, Thomas Martin, Michael McDonald, Brian McNamara, Annabelle Richard-Lafferrière, Laurie Rousseau-Nepton, G. Mark Voit, Tracy Webb, Norbert Werner   +20 more
doaj   +1 more source

Brightest Cluster Galaxies in the Extended GMRT radio halo cluster sample. Radio properties and cluster dynamics [PDF]

, 2015
Brightest Cluster Galaxies (BCGs) show exceptional properties over the whole electromagnetic spectrum. Their special location at the centres of galaxy clusters raises the question of the role of the environment on their radio properties.
R. Kale, T. Venturi, R. Cassano, S. Giacintucci, S. Bardelli, D. Dallacasa, E. Zucca   +6 more
semanticscholar   +1 more source

OrchardQuant‐3D: combining drone and LiDAR to perform scalable 3D phenotyping for characterising key canopy and floral traits in fruit orchards

Plant Biotechnology Journal, Volume 23, Issue 11, Page 4910-4929, November 2025.
Summary Orchard fruits such as pear and apple are important for ensuring global food security and agricultural economy as they not only provide essential nutrients, but also support biodiversity and ecosystem services. Breeders, growers and plant researchers constantly study desirable tree morphological features and floral characteristics to ensure ...
Yunpeng Xia, Hanghang Li, Fanhang Zhang, Gang Sun, Kaijie Qi, Robert Jackson, Felipe Pinheiro, Xiaoman Liu, Yue Mu, Shaoling Zhang, Greg Deakin, E. Charles Whitfield, Shutian Tao, Ji Zhou   +13 more
wiley   +1 more source