Results 51 to 60 of about 141,789 (261)

The specifics of pulsar radio emission

Open Astronomy, 2022
A characteristic property of pulsars is pulsed periodic radio emission, which has a high stability of periods. Despite the high stability of the emission periods of pulsars, monitoring the time of arrival of pulses (timing) shows the presence of ...
Losovsky Boris Ya.
doaj   +1 more source

MHD Interaction of Pulsar Wind Nebulae with SNRs and the ISM

, 2005
In the late 1960s the discovery of the Crab pulsar in its associated supernova remnant, launched a new field in supernova remnant research: the study of pulsar-driven or plerionic supernova remnants.
Arzoumanian, Begelman, Blondin, Bucciantini, Bucciantini, Bucciantini, Chevalier, Chevalier, Cioffi, Del Zanna, E. van der Swaluw, Gaensler, Garcia-Segura, Heger, Hoshino, Kennel, Komissarov, McKee, McKee, Pacini, Rees, Reynolds, Stappers, Truelove, van der Swaluw, van der Swaluw, van der Swaluw, van der Swaluw, van der Swaluw   +28 more
core   +2 more sources

An improved solar wind electron-density model for pulsar timing

, 2007
Variations in the solar wind density introduce variable delays into pulsar timing observations. Current pulsar timing analysis programs only implement simple models of the solar wind, which not only limit the timing accuracy, but can also affect ...
Allen C. W., Cognard I., G. B. Hobbs, J. L. Han, Lyne A. G., Manchester R. N., R. N. Manchester, Schwenn R., W. A. Coles, X. P. You   +9 more
core   +1 more source

Disengaging the Engine: Histone Deacetylases 1 and 2‐Mediated Acetylation of Hexokinase‐2 Regulates Energy Metabolism in Microglia Following Intracerebral Hemorrhage

Advanced Science, EarlyView.
This study demonstrates that HDAC1/2 knockout in microglia alleviates neurological deficits, preserves white matter, and accelerates hematoma clearance after ICH. HDAC1/2 inhibition reduces HK2 acetylation, shifts metabolism from glycolysis to fatty acid oxidation, reduces inflammation, and enhances phagocytosis.
Zhiwen Jiang, Heng Yang, Xinjie Gao, Zengyu Zhang, Ruiyuan Weng, Yuchao Fei, Jiabin Su, Hanqiang Jiang, Wei Ni, Yuxiang Gu   +9 more
wiley   +1 more source

A Hydrodynamic Bioreactor for High‐Yield Production of Extracellular Vesicles from Stem Cell Spheroids with Defined Cargo Profiling

Advanced Science, EarlyView.
This study harnesses hydrodynamic flows to generate, confine and stimulate stem cell spheroids, enabling the large‐scale production of extracellular vesicles (EVs). This innovative method not only streamlines spheroid formation and subsequent EV release in a single, integrated process, but also ensures the generation of EVs with enhanced biological ...
Solène Lenoir, Elliot Thouvenot, Giacomo Gropplero, Léonie Dec, Damarys Loew, Clotilde Théry, Jose E Perez, Claire Wilhelm   +7 more
wiley   +1 more source

Furnishing the Galaxy with Pulsars

, 2007
The majority of pulsar population synthesis studies performed to date have focused on isolated pulsar evolution. Those that have incorporated pulsar evolution within binary systems have tended to either treat binary evolution poorly of evolve the pulsar ...
A. Cumming, C. Bassa, James Murray, Jarrod Hurley, Matthew Bailes, Paul Kiel, V. M. Kaspi, Z. Wang   +7 more
core   +1 more source

EIF5A Couples Translational Control With Transcriptional Reprogramming Through Chromocenter Reorganization During Spermiogenesis

Advanced Science, EarlyView.
The translation factor Eukaryotic translation initiation factor 5A (eIF5A) is essential for male fertility in mice. It supports the translation of proteins crucial for heterochromatin organization and acrosome formation. eIF5A deficiency disrupts chromocenter integrity, increases chromatin accessibility, and causes transcriptional dysregulation ...
Yuling Cai, Tongtong Li, Qian Fang, Ziyou Bao, Feng Kong, Huitao Qi, Hanzhen Li, Mingyu Zhang, Wei Wang, Yongxia Guan, Wenbo Liu, Xiangfeng Chen, Zi‐Jiang Chen, Xiaohua Jiang, Xin Wang, Hongbin Liu   +15 more
wiley   +1 more source

Decoding the Nature of Coherent Radio Emission in Pulsars I: Observational Constraints

Universe
Radio observations from normal pulsars indicate that the coherent radio emission is excited by curvature radiation from charge bunches. In this review, we provide a systematic description of the various observational constraints on the radio emission ...
Dipanjan Mitra, Rahul Basu, George I. Melikizde   +2 more
doaj   +1 more source

Selection of radio pulsar candidates using artificial neural networks

, 2010
Radio pulsar surveys are producing many more pulsar candidates than can be inspected by human experts in a practical length of time. Here we present a technique to automatically identify credible pulsar candidates from pulsar surveys using an artificial ...
A. G. Lyne, A. Noutsos, B. W. Stappers, Belokurov, Bishop, Cordes, Eatough, Faulkner, Firth, Hewish, Jenet, Keith, Kohonen, Lintott, Lorimer, M. J. Keith, M. Kramer, Manchester, N. Molkenthin, R. P. Eatough, Smits, Smits, Storrie-Lombardi, Van Leeuwen, Zhang   +24 more
core   +1 more source

Development of a pulsar-based timescale [PDF]

, 2012
Using observations of pulsars from the Parkes Pulsar Timing Array (PPTA) project we develop the first pulsar-based timescale that has a precision comparable to the uncertainties in international atomic timescales.
Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Champion, D., Chaudhary, A., Chen, D., Coles, W., Hobbs, G., Hotan, A., Keith, M. J., Khoo, J., Kocz, J., Levin, Y., Manchester, R. N., Oslowski, S., Preisig, B., Ravi, V., Reynolds, J. E., Sarkissian, J., Shannon, R. M., van Straten, W., Verbiest, J. P. W., Yardley, D., You, X. P.   +23 more
core   +4 more sources