Gravitational waves from extended theories of gravity
... used in the coordinate transformation breaks down at high frequencies and the distinction between “electric” and “magnetic” components becomes ambiguous at high frequencies. Thus the full theory has to be used, but if one uses the low frequencies approximation, magnetic contributions have to be take ...
... used in the coordinate transformation breaks down at high frequencies and the distinction between “electric” and “magnetic” components becomes ambiguous at high frequencies. Thus the full theory has to be used, but if one uses the low frequencies approximation, magnetic contributions have to be take ...
Soft X-Ray Polarimetry
... large collecting area. While we have specifically examined a case involving Critical Angle Transmission (CAT) gratings, our design is flexible enough to be used with other designs such as one based on reflection or off-plane gratings. Multilayer coatings have been used in several NASA missions, incl ...
... large collecting area. While we have specifically examined a case involving Critical Angle Transmission (CAT) gratings, our design is flexible enough to be used with other designs such as one based on reflection or off-plane gratings. Multilayer coatings have been used in several NASA missions, incl ...
Electromagnetic Waves
... Basic elements of a tuning circuit used to receive radio waves. First, an incoming wave sets up an alternating current in the antenna. Next, the resonance frequency of the LC circuit is adjusted to match the frequency of the radio wave, resulting in a relatively large current in the circuit. This cu ...
... Basic elements of a tuning circuit used to receive radio waves. First, an incoming wave sets up an alternating current in the antenna. Next, the resonance frequency of the LC circuit is adjusted to match the frequency of the radio wave, resulting in a relatively large current in the circuit. This cu ...
ppt - 2006 Mitchell Symposium
... de-leptonization ~ 1 s; less than time for blast wave to propagate out of C/O, He core. De-leptonization does not occur in the vacuum of space, but takes place within the matter-filled environment in the center of the supernova, whether it is in the process of exploding or not. The tendency for the ...
... de-leptonization ~ 1 s; less than time for blast wave to propagate out of C/O, He core. De-leptonization does not occur in the vacuum of space, but takes place within the matter-filled environment in the center of the supernova, whether it is in the process of exploding or not. The tendency for the ...
Axisymmetry in protoplanetary nebulae: using imaging polarimetry
... envelopes of a sample of protoplanetary nebulae (PPNe) at near-infrared wavelengths. This technique allows the scattered light from the faint envelope to be separated from the glare of the bright central star, and is particularly well suited to this class of object. We detect extended (up to 9-arcse ...
... envelopes of a sample of protoplanetary nebulae (PPNe) at near-infrared wavelengths. This technique allows the scattered light from the faint envelope to be separated from the glare of the bright central star, and is particularly well suited to this class of object. We detect extended (up to 9-arcse ...
Blazar Observations in Infrared and Optical Regions: Magnetic Field
... It is known that blazar radiation consists of several components. In optical region synchrotron radiation produced by the moving of relativistic electrons in the magnetic field of a jet dominates. Magnetic field controls practically all main physical processes in galaxies with active nuclei. This is ...
... It is known that blazar radiation consists of several components. In optical region synchrotron radiation produced by the moving of relativistic electrons in the magnetic field of a jet dominates. Magnetic field controls practically all main physical processes in galaxies with active nuclei. This is ...
Polarimetric evidence of a white dwarf pulsar in
... ∼ 5 × 1030 erg s−1 (2), some two orders of magnitude less than a typical accreting magnetic white dwarf, is evidence that the white dwarf in AR Sco is currently not accreting, or has a very low accretion rate. The ratio of X-ray to spin-powered luminosity (α = 3.3 × 10−3 ; see Methods: Luminosities) ...
... ∼ 5 × 1030 erg s−1 (2), some two orders of magnitude less than a typical accreting magnetic white dwarf, is evidence that the white dwarf in AR Sco is currently not accreting, or has a very low accretion rate. The ratio of X-ray to spin-powered luminosity (α = 3.3 × 10−3 ; see Methods: Luminosities) ...
Molecules in Intense Laser Fields
... with an effective nuclear charge q + , the total potential along the z axis is V(z) = —q/|z| —Ez. The electron field distorts the atomic coulomb potential thus producing a barrier with a maximum at zm = (q/E m) 1/2. With V(zm) = —I , the orbital energy, one obtains the minimum field Em = Ip2/4q for ...
... with an effective nuclear charge q + , the total potential along the z axis is V(z) = —q/|z| —Ez. The electron field distorts the atomic coulomb potential thus producing a barrier with a maximum at zm = (q/E m) 1/2. With V(zm) = —I , the orbital energy, one obtains the minimum field Em = Ip2/4q for ...
Magnetic dynamos through driven turbulence
... - not a conserved quantity in MHD, even for negligibly small - can’t support dynamo for a long time: magnetic back-reaction cancels all kinetic helicity at large scales (there is no preferred orientation for spirals) ...
... - not a conserved quantity in MHD, even for negligibly small - can’t support dynamo for a long time: magnetic back-reaction cancels all kinetic helicity at large scales (there is no preferred orientation for spirals) ...
effects - INFN-LNF
... ( in relativistic unities c=1, h=1) as derived by J.Schwinger PR 82, 664 (’51) ...
... ( in relativistic unities c=1, h=1) as derived by J.Schwinger PR 82, 664 (’51) ...
Spectropolarimetry of the massive post
... observe very large polarization changes of order 5% over 15 years. During the s ame period, the optical photometry displayed modest variability at the 0.2 magnitude level. This is unexpected, because large polarization changes are generally accompanied by strong photometric changes. Several explanat ...
... observe very large polarization changes of order 5% over 15 years. During the s ame period, the optical photometry displayed modest variability at the 0.2 magnitude level. This is unexpected, because large polarization changes are generally accompanied by strong photometric changes. Several explanat ...
cosmic microwave background and foregrounds
... band exist (La Porta et al. 2006), but are affected by masking effects like the Faraday rotation leading to depolarization The main observations in the microwave bands are from WMAP (Kogut et al. 2007, Page et al. 2007), at 22 GHz where it is ...
... band exist (La Porta et al. 2006), but are affected by masking effects like the Faraday rotation leading to depolarization The main observations in the microwave bands are from WMAP (Kogut et al. 2007, Page et al. 2007), at 22 GHz where it is ...
ECLIPSE, Volume 1, Number 3, March - April 2017
... Heisenberg and Euler made this prediction all the way back in 1936, and it's gone completely untested until now. Thanks to this pulsar, we have confirmation that light polarized in the same direction as the magnetic field has its propagation affected by quantum physics, in exact agreement with the p ...
... Heisenberg and Euler made this prediction all the way back in 1936, and it's gone completely untested until now. Thanks to this pulsar, we have confirmation that light polarized in the same direction as the magnetic field has its propagation affected by quantum physics, in exact agreement with the p ...
The Science Case for SPICA Far
... 2. Worldwide Capabilities in Far-IR/(Sub)mm Polarimetry in the SPICA Era 3. Polarimetry with SPICA 3a. Assumptions for a SPICA Polarimeter 3b. The Magnetic Field Structure of Spiral Galaxies 3c. Star Formation, Cloud Structure, Magnetic Support, and Turbulence ...
... 2. Worldwide Capabilities in Far-IR/(Sub)mm Polarimetry in the SPICA Era 3. Polarimetry with SPICA 3a. Assumptions for a SPICA Polarimeter 3b. The Magnetic Field Structure of Spiral Galaxies 3c. Star Formation, Cloud Structure, Magnetic Support, and Turbulence ...
PSI: Polarimetric Spectroscopic Imager
... VPHGs are now in use in numerous night time astronomical spectrographs and are planned for many future spectrographs. ...
... VPHGs are now in use in numerous night time astronomical spectrographs and are planned for many future spectrographs. ...
Paper 3 (pdf)
... et al. (2009,20 ) recently suggested that X-ray polarization data could be used to deduce the primary emission mechanism at the base, discriminating between synchrotron, self-Compton (SSC), and external Compton models. Their SSC models predict polarizations between 20% and 80%, depending on the unif ...
... et al. (2009,20 ) recently suggested that X-ray polarization data could be used to deduce the primary emission mechanism at the base, discriminating between synchrotron, self-Compton (SSC), and external Compton models. Their SSC models predict polarizations between 20% and 80%, depending on the unif ...
Probing atmospheric electric fields in thunderstorms through radio
... ulations with radio emission calculated from first principles at the microscopic level [15, 16]. In this analysis we use the CoREAS plugin of CORSIKA [17] with QGSJETII [18] and FLUKA [19] as the hadronic interaction models. It was found previously that the exact shape of the intensity pattern depen ...
... ulations with radio emission calculated from first principles at the microscopic level [15, 16]. In this analysis we use the CoREAS plugin of CORSIKA [17] with QGSJETII [18] and FLUKA [19] as the hadronic interaction models. It was found previously that the exact shape of the intensity pattern depen ...
IB wave phenomena summer work
... Two galaxies with an angular separation at the observer of 5.0 × 10–4 radians are observed with a radio telescope. Both galaxies emit radio waves of wavelength 2.5 × 10–2 m. The images of the galaxies are just resolved by the telescope. The diameter of the circular collecting dish of the telescope i ...
... Two galaxies with an angular separation at the observer of 5.0 × 10–4 radians are observed with a radio telescope. Both galaxies emit radio waves of wavelength 2.5 × 10–2 m. The images of the galaxies are just resolved by the telescope. The diameter of the circular collecting dish of the telescope i ...
Contents List Somerville
... Form of Lunar Spheroid Libration, Aspect, and Constitution of the Moon Rotation of Jupiter’s Satellites Section X. ………………………………………………………………………………………………………… …………………66 Rotation of the Earth invariable Decrease in the Earth’s Mean Temperature Earth originally in a State of Fusion Length of Day constant ...
... Form of Lunar Spheroid Libration, Aspect, and Constitution of the Moon Rotation of Jupiter’s Satellites Section X. ………………………………………………………………………………………………………… …………………66 Rotation of the Earth invariable Decrease in the Earth’s Mean Temperature Earth originally in a State of Fusion Length of Day constant ...
Multiple scattering polarization
... its outward normal and confined to an element of solid angle dω. κν and jν are the mass absorption and emission coefficients for radiation of frequency ν, ρ is the density of the material through which the radiation passes and ds is the thickness of the medium in the direction of propagation of radi ...
... its outward normal and confined to an element of solid angle dω. κν and jν are the mass absorption and emission coefficients for radiation of frequency ν, ρ is the density of the material through which the radiation passes and ds is the thickness of the medium in the direction of propagation of radi ...
PDF only - at www.arxiv.org.
... intensity gradient and that of the polarization is derived. For example, for 3C9, the source with the best accuracy, Leahy48 refers to Ref. 47, who however, do not give any measurements of local gradients. 4. Constraints from the UV Polarization of RGs Another method to test for CPR has used the per ...
... intensity gradient and that of the polarization is derived. For example, for 3C9, the source with the best accuracy, Leahy48 refers to Ref. 47, who however, do not give any measurements of local gradients. 4. Constraints from the UV Polarization of RGs Another method to test for CPR has used the per ...
samba2002v2
... full process from the absorption of photons in the active volume, the photoelectrons emission, the interaction of the photoelectrons in the gas mixture, the diffusion of the primary ionization, the avalanche multiplication in the GEM and the collection of the charge on the read-out plane, has been d ...
... full process from the absorption of photons in the active volume, the photoelectrons emission, the interaction of the photoelectrons in the gas mixture, the diffusion of the primary ionization, the avalanche multiplication in the GEM and the collection of the charge on the read-out plane, has been d ...
Circular polarization
In electrodynamics, circular polarization of an electromagnetic wave is a polarization in which the electric field of the passing wave does not change strength but only changes direction in a rotary manner.In electrodynamics the strength and direction of an electric field is defined by what is called an electric field vector. In the case of a circularly polarized wave, as seen in the accompanying animation, the tip of the electric field vector, at a given point in space, describes a circle as time progresses. If the wave is frozen in time, the electric field vector of the wave describes a helix along the direction of propagation.Circular polarization is a limiting case of the more general condition of elliptical polarization. The other special case is the easier-to-understand linear polarization.The phenomenon of polarization arises as a consequence of the fact that light behaves as a two-dimensional transverse wave.