Results 91 to 100 of about 887 (163)

The Emergence of a Brightest Cluster Galaxy in a Protocluster Core at z = 2.24

open access: yesThe Astrophysical Journal
We report the detection of a pair of massive quiescent galaxies likely in the process of merging at the center of the spectroscopically confirmed, extremely massive protocluster BOSS1244 at z = 2.24 ± 0.02.
Dong Dong Shi   +6 more
doaj   +1 more source

White Dwarf Stars in the Big Data Era

open access: yesAstronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT White dwarf stars are the most common endpoint of stellar evolution. Therefore, these old, numerous and compact objects provide valuable information on the late stages of stellar evolution, the physics of dense plasma and the structure and evolution of our Galaxy.
Maria Camisassa
wiley   +1 more source

Accretion Onto Weakly Magnetized Neutron Stars: Polarization Theory and Its Application to X‐Ray Burster GX 13+1

open access: yesAstronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT Observations show that the x‐ray emission of the accreting weakly magnetized neutron stars (WMNSs) is polarized. In this article, we summarize the analytical models for the polarized emission of various components of the WMNSs. We introduce a missing theoretical model, where we assume the emission comes from the spreading layer, the extension ...
Anna Bobrikova, Sofia V. Forsblom
wiley   +1 more source

Physician Level Assessment of Hirsute Women and of Their Eligibility for Laser Treatment With Deep Learning

open access: yesLasers in Surgery and Medicine, Volume 57, Issue 1, Page 80-87, January 2025.
ABSTRACT Objectives Hirsutism is a widespread condition affecting 5%–15% of females. Laser treatment of hirsutism has the best long‐term effect. Patients with nonpigmented or nonterminal hairs are not eligible for laser treatment, and the current patient journey needed to establish eligibility for laser hair removal is problematic in many health‐care ...
Kenneth Thomsen   +11 more
wiley   +1 more source

Molecular techniques in haematopathology: what and how?

open access: yesHistopathology, Volume 86, Issue 1, Page 38-57, January 2025.
Schematic representation of various molecular alterations relevant to lymphoid and myeloid neoplasms and the different techniques that can be used for detection. Here we review the ‘what and how’ of molecular techniques used in the context of haematopathological diagnostics of both lymphoid and myeloid neoplasms.
Gaurav Chatterjee   +4 more
wiley   +1 more source

Measuring the optical depth profile of galaxy clusters by kinetic Sunyaev-Zel\'dovic effect

open access: yesIranian Journal of Physics Research, 2018
baryonic matter distribution in the large-scale structures is one of the main questions in cosmology. This distribution can provide valuable information regarding  the processes of galaxy formation and evolution.
Sh Baghram
doaj  

XRISM Reveals Low Nonthermal Pressure in the Core of the Hot, Relaxed Galaxy Cluster A2029

open access: yesThe Astrophysical Journal Letters
We present XRISM Resolve observations of the core of the hot, relaxed galaxy cluster Abell 2029 (A2029). We find that the line-of-sight bulk velocity of the intracluster medium (ICM) within the central 180 kpc is at rest with respect to the brightest ...
XRISM Collaboration   +138 more
doaj   +1 more source

Correlations in Relaxed Clusters of Galaxies

open access: yesOpen Astronomy, 2014
The correlations among different quantities in galaxy clusters, observed by Newman et al. (2013a,b), are investigated. We find an anti-correlation among the slope α, the effective radius, Re, and a correlation among the core radius rcore and Re. Moreover,
Babyk Iu., Del Popolo A.
doaj   +1 more source

Weak-lensing Characterization of the Dark Matter in 29 Merging Clusters that Exhibit Radio Relics

open access: yesThe Astrophysical Journal Supplement Series
We present a multiwavelength analysis of 29 merging galaxy clusters that exhibit radio relics. For each merging system, we perform a weak-lensing analysis on Subaru optical imaging.
Kyle Finner   +7 more
doaj   +1 more source

Star Formation, Nebulae, and Active Galactic Nuclei in CLASH Brightest Cluster Galaxies. I. Dependence on Core Entropy of Intracluster Medium

open access: yesThe Astrophysical Journal
We set the stage for reassessing how star formation, emission-line nebulae, and active galactic nuclei (AGNs) in brightest cluster galaxies (BCGs) depend on the thermodynamics of the intracluster medium (ICM).
Arsen Levitskiy   +4 more
doaj   +1 more source

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