Results 21 to 30 of about 3,604,186 (292)

Scale-invariant radio jets and varying black hole spin [PDF]

open access: yes, 2016
Compact radio cores associated with relativistic jets are often observed in both active galactic nuclei and X-ray binaries. Their radiative properties follow some general scaling laws which primarily depend on their masses and accretion rates.
Falcke, Heino   +2 more
core   +2 more sources

Black hole jet power from impedance matching [PDF]

open access: yes, 2015
Black hole jet power depends on the angular velocity of magnetic field lines, $\Omega_F$. Force-free black hole magnetospheres typically have $\Omega_F/\Omega_H \approx 0.5$, where $\Omega_H$ is the angular velocity of the horizon.
Penna, Robert F.
core   +2 more sources

The Black Consciousness Movement in Azania (South Africa): A triple heritage

open access: yesThe Journal for Transdisciplinary Research in Southern Africa
Starting with the 2015 Rhodes Must Fall campaign, there has been renewed interest in the philosophy of black consciousness through popular expressions – on social media and mainstream media articles – and by scholars.
Lekgantshi C. Tleane
doaj   +1 more source

The Black Power Movement: A historiographical understanding of how scholarship has shaped the legacy of the Black Power Movement

open access: yesCogent Arts & Humanities, 2023
Scholarship surrounding the Black Power Movement has shifted from the previous century to articulate a new perspective conducive to the realities of the past.
Robert Lynn
doaj   +1 more source

The physical fundamental plane of black hole activity: revisited

open access: yes, 2015
The correlation between the jet power and accretion disk luminosity is investigated for active galactic nuclei (AGNs) and black hole X-ray binaries (BHXBs) from the literature. The power-law correlation index is steep ($\mu \sim$ 1.0--1.4) for radio loud
Han, Zhenhua, Liu, Xiang, Zhang, Zhen
core   +1 more source

Black Power in Maya Angelou\u27s “Still I Rise”, “Phenomenal Woman”, and “Weekend Glory” [PDF]

open access: yes, 2013
This article discusses the Black Power\u27s ideas inside the three poems of Maya Angelou, “Still I Rise”, “Phenomenal Woman”, and “Weekend Glory”. Maya Angelou was highly respected as a spokesperson for Blacks and women.
Krisna, S. (Silvania)   +1 more
core  

Effects of Spin on High-Energy Radiation from Accreting Black Holes [PDF]

open access: yes, 2016
Observations of jets in X-ray binaries show a correlation between radio power and black hole spin. This correlation, if confirmed, points towards the idea that relativistic jets may be powered by the rotational energy of black holes.
McKinney, Jonathan C.   +2 more
core   +2 more sources

Assessing Cognitive Functioning in Children With Brain Tumors: Interaction of Neighborhood Social Determinants of Health and Neurological Risk

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background This study investigated how neighborhood‐level social determinants of health (SDOH), including redlining and neurological risk, interact to influence cognitive outcomes in children treated for brain tumors (CTBT). Methods A retrospective chart review of 161 CTBT aged 5–17 was conducted.
Alannah R. Srsich   +5 more
wiley   +1 more source

The scaling of the X-ray variability with black hole mass in AGN

open access: yes, 2003
The relation between the 2-10 keV, long term, excess variance and AGN black hole mass is considered in this work. A significant anti-correlation is found between these two quantities in the sense that the excess variance decreases with increasing black ...
Barr   +36 more
core   +2 more sources

AAA+ protein unfoldases—the Moirai of the proteome

open access: yesFEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

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