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A New Sample of Transient Ultraluminous X-Ray Sources Serendipitously Discovered by Swift/XRT [PDF]
The Astrophysical Journal, 2023 Ultraluminous X-ray sources (ULXs) are our best laboratories for studying extreme super-Eddington accretion. Most studies of these objects are of relatively persistent sources; however, there is growing evidence to suggest a large fraction of these ...
Murray Brightman +13 more
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Globular cluster x-ray sources. [PDF]
Proc Natl Acad Sci U S A, 2010 Globular clusters and x-ray astronomy have a long and fruitful history. Uhuru and OSO-7 revealed highly luminous (> 10 36 ergs -1 ) x-ray sources in globular clusters, and Einstein and ROSAT ...
Pooley D.
europepmc +4 more sources
Nature Communications, 2021 Electrochemical degradation is the most critical challenge for Li-rich materials. Here, the authors reveal that manganese related phase reaction inhomogeneity coupling with transition metal rearrangement triggers electrochemical degradation in lithium ...
Liguang Wang +12 more
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Exploring new battery knowledge by advanced characterizing technologies
Exploration, 2021 Exploration of science and technologies represents human's thirst for new knowledge and new life. Presently, we are in a stage of transferring the use of fossil fuels to renewable energy, which urgently calls for new energy materials and techniques ...
Liguang Wang +3 more
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Limits on Leptonic TeV Emission from the Cygnus Cocoon with Swift-XRT
The Astrophysical Journal, 2023 γ -ray observations of the Cygnus Cocoon, an extended source surrounding the Cygnus X star-forming region, suggest the presence of a cosmic-ray accelerator reaching energies up to a few PeV.
David Guevel +7 more
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Time-resolved β-lactam cleavage by L1 metallo-β-lactamase
Nature Communications, 2022 Metallo-β-lactamases cleave β-lactam moiety of many broadly used antibiotics. Here the authors captured mechanistic details of the enzyme catalyzed reaction using time-resolved xray synchrotron serial crystallography.
M. Wilamowski +12 more
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International Astronomical Union Colloquium, 1986 AbstractType I cosmic X-ray bursts are widely thought to result from thermonuclear flashes in the surface layers of accreting neutron stars. The thermonuclear-flash model is able to account for a wide variety of observed burst phenomena. However, a number of theoretical and observational problems persist.
Fulvio Melia, Paul C. Joss
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Rational design of mechanically robust Ni-rich cathode materials via concentration gradient strategy
Nature Communications, 2021 Mechanical integrity issues are one of the main causes of limited long-term cycle stability for Ni-rich cathode materials. Here the authors analyse the roles of cobalt and manganese and utilise a concentration gradient design to mitigate these issues.
Tongchao Liu +14 more
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Coherent Compton X-Ray Sources [PDF]
Journal of X-Ray Science and Technology: Clinical Applications of Diagnosis and Therapeutics, 1994 Coherent x rays can be produced by scattering of laser light by a beam of relativistic electrons, provided that the electron beam is density modulated or the scattering is done at, or near, 90°. Since the coherent scattering is proportional to N2, where N is the number of electrons, and the incoherent scattering is proportional to N, also a modest ...
Luccio, A., Miceli, L.
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Constraint on the Accretion of NGC 6946 X-1 Using Broadband X-Ray Data
The Astrophysical Journal, 2023 We analyze broadband X-ray data of NGC 6946 X-1 and probe plausible accretion scenarios in this ULX. NGC 6946 X-1 is a persistent soft source with broadband continuum spectra described by two thermal disk components. The cool accretion disk temperature T
Tanuman Ghosh, Vikram Rana
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