Results 21 to 30 of about 12,989 (225)
Temporary Singularities and Axions: An Analytic Solution that Challenges Charge Conservation
Annalen der Physik, Volume 533, Issue 6, June 2021., 2021 Is charge conservation sacrosact? If so, why? Even when local charge conservation remains in force, the presence of a temporary singularity can give rise to surprising results. This work shows how global charge conservation can be broken after the combined appearance of both new charge and an axion‐like field from the singularity.
Jonathan Gratus +2 more
wiley +1 more source
American Journal of Physics, 2000 Abstract I summarize recent observational and theoretical advances in the understanding of the Soft Gamma Repeaters and the Anomalous X-ray Pulsars. Several direct physical arguments point to very strong magnetic fields (B > 10 BQED = 4.4 × 1014 G) in SGR outbursts. The connection between these two classes of neutron stars is examined.
openaire +2 more sources
A Quarter Century of Wind Spacecraft Discoveries [PDF]
Rev Geophys, 2021 Abstract The Wind spacecraft, launched on November 1, 1994, is a critical element in NASA’s Heliophysics System Observatory (HSO)—a fleet of spacecraft created to understand the dynamics of the Sun‐Earth system. The combination of its longevity (>25 years in service), its diverse complement of instrumentation, and high resolution and accurate ...
Wilson L +13 more
europepmc +2 more sources
Alfvén quasi-periodic oscillations in magnetars [PDF]
Journal of Physics: Conference Series, 2008 We investigate torsional Alfv n oscillations of relativistic stars with a global dipole magnetic field, via two-dimensional numerical simulations. We find that a) there exist two families of quasi-periodic oscillations (QPOs) with harmonics at integer multiples of the fundamental frequency, b) the lower-frequency QPO is related to the region of closed
Hajime Sotani +2 more
openalex +4 more sources
A search for runaway stars in 12 Galactic supernova remnants
Astronomische Nachrichten, Volume 342, Issue 3, Page 553-577, March 2021., 2021 Runaway stars can result from core‐collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion is ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion, as well as orbital parameters of the pre‐supernova binary system.
Oliver Lux +3 more
wiley +1 more source
Proceedings of the National Academy of Sciences, 1999 Recent x-ray observations have shown that a substantial fraction of newly born neutron stars have magnetic fields of several 10 14 G. They reveal themselves as soft gamma repeaters and anomalous x-ray pulsars and may account for the missing radio pulsars in young supernova remnants.
openaire +2 more sources
Magnetars and pulsars: a missing link [PDF]
, 2002 There is growing evidence that soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are isolated neutron stars with superstrong magnetic fields, i.e., magnetars, marking them a distinguished species from the conventional species of spindown-
A Ibrahim +33 more
core +3 more sources
Astrophysics and Space Science, 2007 9 pages, 6 figures; talk at "Isolated Neutron Stars: from the Interior to the Surface," London, April ...
Beloborodov, A. M., Thompson, C.
openaire +2 more sources
Nuclear Physics B, 2019 Interaction between the gravitational waves (GWs) and the strong magnetic fields would lead to the perturbed electromagnetic waves (EMWs). Magnetars can have ultra-strong surface magnetic fields ∼1011Tesla, and meanwhile, they would generate the thermal ...
Hao Wen +3 more
doaj +1 more source
Solving the Mystery of Fast Radio Bursts: A Detective’s Approach
Universe, 2023 Fast radio bursts (FRBs) are still a mystery in contemporary astrophysics. Unlike many other astronomical objects whose basic physical mechanism is already identified and the research on which focuses mainly on refining details, FRBs are still largely ...
Bing Zhang
doaj +1 more source