Results 31 to 40 of about 18,264 (187)
Galaxies, 2018 The cold dark matter (CDM) paradigm successfully explains the cosmic structure over an enormous span of redshifts. However, it fails when probing the innermost regions of dark matter halos and the properties of the Milky Way’s dwarf galaxy satellites ...
Ivan de Martino +5 more
doaj +1 more source
Gamma rays from millisecond pulsars. [PDF]
, 1991 The contribution of millisecond pulsars to the diffuse gamma-ray background of the Galaxy is estimated, and it is shown that a significant fraction of the Galactic background may originate from them. A small number of the unidentified COS-B point sources
Bhattacharya, D., Srinivasan, G.
core +1 more source
Pulsar Polar Cap and Slot Gap Models: Confronting Fermi Data [PDF]
Journal of Astronomy and Space Sciences, 2013 Rotation-powered pulsars are excellent laboratories for studying particle acceleration as well as fundamental physics of strong gravity, strong magnetic fields and relativity.
Alice K. Harding
doaj +1 more source
Advanced Science, EarlyView.USP4 stabilizes CHAF1B by limiting K48‐linked ubiquitination. Stabilized CHAF1B supports UHRF1‐associated K63‐linked SETDB1 ubiquitination and cytoplasmic redistribution, whereas CHAF1B loss favors VHL‐dependent K11‐associated degradative ubiquitination and proteasomal loss of SETDB1.
Saiyan Bian +9 more
wiley +1 more source
TeV astronomy of millisecond pulsars [PDF]
, 1991 This thesis is concerned with the detection of pulsed TeV γ-rays from millisecond pulsars. These stars appear to include some very efficient producers of high energy particles, but the mechanisms by which they produce TeV γ-rays are still a matter of ...
Brazler, Karen Tracy Susan
core
The Emission Geometry of Pulsars with Interpulses
The Astrophysical JournalWe present polarization profiles of 23 pulsars exhibiting interpulse (IP) emissions using the Five-hundred-meter Aperture Spherical Radio Telescope. By applying the rotating vector model (RVM), we measured the inclination and impact angles for 16 pulsars,
S. N. Sun +3 more
doaj +1 more source
Neutrino Oscillation in a Minimal Length Spacetime
Astronomische Nachrichten, EarlyView.ABSTRACT We investigate how neutrino oscillations are modified in a non‐commutative spacetime characterized by a minimal length scale, described by the Quesne–Tkachuk algebra. By incorporating the algebra's deformation parameter β$$ \beta $$ into the effective neutrino mass, we derive the two‐flavor oscillation probability in this non‐commutative ...
Luísa Nadal‐Camargo +3 more
wiley +1 more source
A relativistic positioning system exploiting pulsating sources for navigation across the Solar System and beyond [PDF]
, 2011 We introduce an operational approach to the use of pulsating sources, located at spatial infinity, for defining a relativistic positioning and navigation system, based on the use of null four-vectors in a flatMinkowskian spacetime.
Capolongo, Emiliano +2 more
core
The absence of women's scientific contributions in core UK pre‐university science qualifications
British Educational Research Journal, EarlyView.Abstract Despite their groundbreaking contributions to our understanding of the natural world and the universe, women's roles in biology, chemistry, physics, astronomy, environmental science and geology remain largely absent from standard educational specifications in the United Kingdom (UK), particularly at Key Stage 4 (KS4) and Key Stage 5 (KS5), or ...
G. J. Cooke +7 more
wiley +1 more source
Discovery of 15 New Pulsars at High Galactic Latitudes with FAST
The Astrophysical JournalWe present the discovery and timing results for 15 pulsars discovered in a high-Galactic-latitude survey conducted with the Five-hundred-meter Aperture Spherical Telescope.
Xin Xu +11 more
doaj +1 more source