Results 81 to 90 of about 974 (262)
The Astrophysical JournalRecent detections of gravitational waves from mergers of binary black holes (BBHs) with premerger source-frame individual masses in the so-called upper mass gap, expected due to (pulsational) pair instability supernovae ((P)PISNe), have created immense ...
Ambreesh Khurana, Sourav Chatterjee
doaj +1 more source
Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas +3 more
wiley +1 more source
Stellar mergers in the era of large surveys
, 2019 Most stars in our Universe live in binaries. Unstable mass transfer from one star to another can lead to the formation of a common envelope: a shared gaseous shell where both stars orbit. The end of this phase is marked by the quick spiral-in of the secondary star towards its companion, leading to violent interactions between the components. The whole,
openaire +2 more sources
A magnetic massive star has experienced a stellar merger
ScienceMassive stars (those ≥8 solar masses at formation) have radiative envelopes that cannot sustain a dynamo, the mechanism that produces magnetic fields in lower-mass stars. Despite this, approximately 7% of massive stars have observed magnetic fields, the origin of which is debated.
Frost, A. J. +15 more
openaire +4 more sources
The Maximum Mass Ratio of Hierarchical Binary Black Hole Mergers May Cause the q–χeff Correlation
The Astrophysical Journal LettersRegardless of their initial spins, the merger of two roughly equal mass black holes (BHs) produces a remnant BH of dimensionless spin 0.69. Such remnants can merge with other BHs in dense stellar environments and produce hierarchical mergers.
Aditya Vijaykumar +2 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Nephrogenic rests (NRs) and nephroblastomatosis (NBM) are precursor lesions for development of Wilms tumor (WT). Their association with the risk of relapse has not been properly assessed, partly due to misunderstanding of their diagnostic criteria and terminology.
Gordan M. Vujanić +5 more
wiley +1 more source
The Astrophysical JournalRecent studies show that the eccentricity distribution of wide binaries (semimajor axis ≳10 ^3 au) observed by Gaia tends to favor large eccentricities more strongly than the canonical thermal distribution ( P ( e ) ∝ e )—such distributions are termed ...
Yubo Su, Bin Liu, Siyao Xu
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Together, leukemia and lymphoma account for 38.7% of newly diagnosed pediatric cancer cases in the United States each year. Many caregivers utilize online resources to inform medical health decisions. Understanding the readability of these materials is critical to ensuring comprehensible patient education.
Chloe Strege +6 more
wiley +1 more source
Common-envelope evolution and stellar mergers
, 2016 We discuss the various phases encountered during common-envelope (CE) evolution, starting with the criterion for dynamical mass transfer and the onset of a common-envelope phase, the main spiralin phase and ending with the final merging of the binary components (in cases where the envelope is not ejected earlier).
openaire +2 more sources
Inferring Host-galaxy Properties of LIGO–Virgo–KAGRA’s Black Holes
The Astrophysical JournalObservations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe evolves differently with redshift based on their physical properties ...
Aditya Vijaykumar +3 more
doaj +1 more source