Results 91 to 100 of about 24,589 (267)

Stochastic Optical Variability and an rms–Flux Relation in the Intermediate Polar EP240309a

The Astrophysical Journal Supplement Series
Magnetic cataclysmic variables provide a natural laboratory for studying how accretion interacts with compact-object magnetospheres and generates stochastic variability.
S.-Y. Wu, Y.-D. Hu, I. Pérez-García, A. J. Castro-Tirado, M. Gritsevich, E. J. Fernández-García, M. D. Caballero-García, S. Guziy, G. García-Segura, R. Sánchez-Ramírez, C. D. Kilpatrick, C. R. Bom, L. Santana, A. Santos, P. J. Meintjes, H. J. van Heerden, A. Martín-Carrillo, L. Hanlon, A. Maury, D.-R. Xiong, B.-B. Zhang   +20 more
doaj   +1 more source

Variability in Hot Carbon-Dominated Atmosphere (hot DQ) White Dwarfs: Rapid Rotation?

, 2015
Hot white dwarfs with carbon-dominated atmospheres (hot DQs) are a cryptic class of white dwarfs. In addition to their deficiency of hydrogen and helium, most of these stars are highly magnetic, and a large fraction vary in luminosity.
Bierwagon, Michael, Falcon, Ross E., Montgomery, M. H., Williams, Kurtis A., Winget, D. E.   +4 more
core   +1 more source

Tumor‐Derived Alpha‐1 Antitrypsin Promotes Liver Metastasis of Colorectal Cancer Through the Neutrophil Extracellular Traps–CCDC25 Pathway

Advanced Science, EarlyView.
ABSTRACT Liver metastasis is a leading cause of mortality in colorectal cancer (CRC), where the inflammatory tumor microenvironment, specifically neutrophil infiltration, significantly promotes metastatic colonization. This study reveals a pro‐metastatic role for alpha‐1 antitrypsin (A1AT) in CRC liver metastasis via a dual mechanism involving ...
Qian Fei, Chunning Li, Lei Zhan, Xiaoyan Li, Yan Hui, Yue Jin, Jing Zhang, Lu Yang, Xin Sun, Xiaoxi Li, Qian Dong, Jingdong Zhang   +11 more
wiley   +1 more source

The Core Composition of a White Dwarf in a Close Double Degenerate System

, 2011
We report the identification of the double degenerate system NLTT 16249 that comprises a normal, hydrogen-rich (DA) white dwarf and a peculiar, carbon-polluted white dwarf (DQ) showing photospheric traces of nitrogen. We disentangled the observed spectra
Dufour, Garcia-Berro, Herwig, Karakas, Kawka, Koester, Lattanzio, Ritter, Salim, Schaller, Skrutskie, Tanabashi, Weidemann, Zeidler-K. T., Zeidler-K. T.   +14 more
core   +1 more source

Molecular Glue cc‐885 Inhibits VHL‐Deficient Clear Cell Renal Cell Carcinoma via ETS1 Degradation

Advanced Science, EarlyView.
VHL‐deficient kidney cancer lacks effective treatments. This study reveals that the molecular glue degrader cc‐885 hijacks the cellular recycling system to selectively destroy the oncogenic protein ETS1, effectively killing VHL‐mutant tumors. Combining CC‐885 with the approved drug belzutifan achieves powerful synergy, offering a promising new ...
Taowei Yang, Qihao Li, Kun Ye, Kezhi Liu, Mi Zhou, Minyu Chen, Lican Liao, Kangbo Huang, Zhu Wang, Qiong Deng, Jieyan Wang, Meiyu Jin, Xu Chen, Hui Liang, Jiaxing Zhang, Junhang Luo   +15 more
wiley   +1 more source

Evolution of the Inner Accretion Flow and the White Dwarf Spin Pulse during the 2023 Outburst in GK Persei

The Astrophysical Journal
We present our X-ray and optical observations performed by NICER, NuSTAR, and Tomo-e Gozen during the 2023 outburst in the intermediate polar GK Persei. The X-ray spectrum consisted of three components: blackbody (BB) emission of several tens of eVs from
Mariko Kimura, Takayuki Hayashi, Yuuki Wada, Wataru Iwakiri, Shigeyuki Sako, Martina Veresvarska, Simone Scaringi, Noel Castro-Segura, Christian Knigge, Keith C. Gendreau, Zaven Arzoumanian   +10 more
doaj   +1 more source

Fundamental stellar and accretion disc parameters of the eclipsing binary DQ Velorum

, 2013
To add to the growing collection of well-studied double periodic variables (DPVs) we have carried out the first spectroscopic and photometric analysis of the eclipsing binary DQ Velorum to obtain its main physical stellar and orbital parameters ...
Barría, D., Djurasević, G., Kołaczkowski, Z., Mennickent, R. E., Michalska, G., Niemczura, E., Schmidtobreick, L., Vucković, M.   +7 more
core   +1 more source

Passivation‐Induced Species Dynamics and Microstructural Evolution in Solid‐State Lithium–Sulfur Cathodes

Advanced Science, EarlyView.
The formation of insulating Li2S during discharge in solid‐state lithium–sulfur batteries passivate reaction sites and limits sulfur utilization. In this work, a microstructure‐resolved modeling framework coupling transport and reaction kinetics is developed to predict charge–discharge behavior and reveal particle‐scale species evolution and incomplete
Arpan K. Sharma, Bairav S. Vishnugopi, Elif Pınar Alsaç, Matthew T. McDowell, Partha P. Mukherjee   +4 more
wiley   +1 more source

Discovery of Spin-pulse Correlated Magnetic Gating Bursts in the Long-period Intermediate Polar PBC J0801.2–4625

The Astrophysical Journal
We present the first discovery of small-amplitude (tens of millimagnitudes), short-duration (several hours) episodic brightenings in the Transiting Exoplanet Survey Satellite (TESS) light curve of the intermediate polar PBC J0801.2–4625 that are strongly
Vishal Joshi, Akash Sundriyal
doaj   +1 more source

Wolf-Rayet stars in the Small Magellanic Cloud as testbed for massive star evolution

, 2018
The majority of Wolf-Rayet (WR) stars represent the stripped cores of evolved massive stars who lost most of their hydrogen envelope. In low metallicity environments, such as the Small Magellanic Cloud (SMC), stellar winds are weaker and binary ...
Langer, Norbert, Schootemeijer, Abel
core   +1 more source