Star Wreck
... Meanwhile, the star slowly looses its mass. Neutron stars are stable in a certain range of masses. Assuming Harrison–Wheeler equation of state, one obtains a lower limit on the mass Mmin ≈ 0.18M⊙ [18]. By the time the Q-balls annex 80% of the neutron star baryon number, a similar fraction of the st ...
... Meanwhile, the star slowly looses its mass. Neutron stars are stable in a certain range of masses. Assuming Harrison–Wheeler equation of state, one obtains a lower limit on the mass Mmin ≈ 0.18M⊙ [18]. By the time the Q-balls annex 80% of the neutron star baryon number, a similar fraction of the st ...
EM theory and its application to microwave remote sensing
... Signals produced by single-frequency or multifrequency transmitters are typically completely polarized Signals emitted by physical objects, irregular terrain, or inhomogeneous media are usually broadband and are composed of many statistically independent waves with different polarizations If there i ...
... Signals produced by single-frequency or multifrequency transmitters are typically completely polarized Signals emitted by physical objects, irregular terrain, or inhomogeneous media are usually broadband and are composed of many statistically independent waves with different polarizations If there i ...
EM theory and its application to microwave remote sensing
... Signals produced by single-frequency or multifrequency transmitters are typically completely polarized Signals emitted by physical objects, irregular terrain, or inhomogeneous media are usually broadband and are composed of many statistically independent waves with different polarizations If there i ...
... Signals produced by single-frequency or multifrequency transmitters are typically completely polarized Signals emitted by physical objects, irregular terrain, or inhomogeneous media are usually broadband and are composed of many statistically independent waves with different polarizations If there i ...
On the new modes of planetary-scale electromagnetic waves in the
... νe =νei +νen ; νi =ηνin , 2i =ηeH0 /(Mc)=ηωi ; g is the free fall acceleration; ω0 is the angular velocity of the Earth’s rotation; u=V−VD . In the E-region of the ionosphere we have ωe νen , ωi νin and α=c/(eN) (Hall’s conductivity disappears higher than 150 km σH =0). From Eq. (13) it follows t ...
... νe =νei +νen ; νi =ηνin , 2i =ηeH0 /(Mc)=ηωi ; g is the free fall acceleration; ω0 is the angular velocity of the Earth’s rotation; u=V−VD . In the E-region of the ionosphere we have ωe νen , ωi νin and α=c/(eN) (Hall’s conductivity disappears higher than 150 km σH =0). From Eq. (13) it follows t ...
PDF format
... – It is a ball of neutrons left over from a massive star supernova and supported by neutron degeneracy pressure. • How were neutron stars discovered? – Beams of radiation from a rotating neutron star sweep through space like lighthouse beams, making them appear to pulse. – Observations of these ...
... – It is a ball of neutrons left over from a massive star supernova and supported by neutron degeneracy pressure. • How were neutron stars discovered? – Beams of radiation from a rotating neutron star sweep through space like lighthouse beams, making them appear to pulse. – Observations of these ...
Photometric variability of the Pre
... This periodicity typically persists for only a couple of rotation cycles. The UXor type of variability is seen in HAEBE and some CTT stars from F-G spectral types. The typical amplitudes are of the order of 2-3 mag (V), and time scales are longer compared to the irregular variations of CTT stars. Du ...
... This periodicity typically persists for only a couple of rotation cycles. The UXor type of variability is seen in HAEBE and some CTT stars from F-G spectral types. The typical amplitudes are of the order of 2-3 mag (V), and time scales are longer compared to the irregular variations of CTT stars. Du ...
Gravitational waves from the inspiral of a compact object
... In particular, the body's moments are encoded in the time evolution of the waves' phase C'(t) (the quantity that can be measured with extremely high accuracy by interferometric gravitational-wave detectors); and they are also encoded in the gravitational-wave spectrum AE(f) (energy emitted per unit ...
... In particular, the body's moments are encoded in the time evolution of the waves' phase C'(t) (the quantity that can be measured with extremely high accuracy by interferometric gravitational-wave detectors); and they are also encoded in the gravitational-wave spectrum AE(f) (energy emitted per unit ...
e - DSpace@MIT
... steady electric or magnetic fields are perpendicular (type I) or tangent'j.a1(type II) to the interface. E1ectrohydrodynamic examples of type I and type II waves are experimentally verified by studying surface instability, radiation and resonance. Conditions for resonance in rectangular geometry are ...
... steady electric or magnetic fields are perpendicular (type I) or tangent'j.a1(type II) to the interface. E1ectrohydrodynamic examples of type I and type II waves are experimentally verified by studying surface instability, radiation and resonance. Conditions for resonance in rectangular geometry are ...
On the Carrier of Inertia
... 3.1. Inertia’s radiative and instantaneous character There is no dilemma with inertial reaction appearing as if instantaneous despite the finite speed of light, because the photon-carried energy density is already present everywhere, and hence it will react to any action. In other words, the inertia ...
... 3.1. Inertia’s radiative and instantaneous character There is no dilemma with inertial reaction appearing as if instantaneous despite the finite speed of light, because the photon-carried energy density is already present everywhere, and hence it will react to any action. In other words, the inertia ...
HS0702+ 6043: A star showing both short-period p
... companion. Because the star is relatively faint, 2MASS photometry is only accurate enough to require that any hypothetical companion must be later than K-type. At the supposed 1 h orbit, the Roche geometry marginally allows to fit an object near the minimum of the mass-radius relation, i.e. an old m ...
... companion. Because the star is relatively faint, 2MASS photometry is only accurate enough to require that any hypothetical companion must be later than K-type. At the supposed 1 h orbit, the Roche geometry marginally allows to fit an object near the minimum of the mass-radius relation, i.e. an old m ...
The Gravitational Spacecraft
... that the quantization process had many ambiguities. Then, a new approach has been proposed starting from the generalization of the action function * . The result has been the derivation of a theoretical background, which finally led to the so-sought quantization of the gravity and of the space-time. ...
... that the quantization process had many ambiguities. Then, a new approach has been proposed starting from the generalization of the action function * . The result has been the derivation of a theoretical background, which finally led to the so-sought quantization of the gravity and of the space-time. ...
Who’s Afraid of a Stellar Superflare? Rachel Osten GSFC
... Kashyap et al. (2006) superflaring in old active binary systems ...
... Kashyap et al. (2006) superflaring in old active binary systems ...
16.1 A Little History
... ble explanations, the most intriguing possibility is that stars more massive than ∼ 17M may collapse ‘quietly’ to form black holes and either very faint supernovae or no supernova at all. ...
... ble explanations, the most intriguing possibility is that stars more massive than ∼ 17M may collapse ‘quietly’ to form black holes and either very faint supernovae or no supernova at all. ...
Transiting exoplanets from the CoRoT space mission
... The target star CoRoT-24 was observed on the detector E1 of the CoRoT satellite during its second Long Run pointing at the direction opposite to the approximate galactic center (“anticenter” in the CoRoT jargon). The observations lasted from 16 Nov. 2008 until 8 March 2009, covering a total span of ...
... The target star CoRoT-24 was observed on the detector E1 of the CoRoT satellite during its second Long Run pointing at the direction opposite to the approximate galactic center (“anticenter” in the CoRoT jargon). The observations lasted from 16 Nov. 2008 until 8 March 2009, covering a total span of ...
Population synthesis of Be/white dwarf binaries in the Galaxy
... According to this model, the Be star should have an evolved companion, either a helium star, a white dwarf, or a neutron star. However, despite the large estimated number of Be binaries, only Be/neutron star systems have been found. Be stars in Be/X-ray binaries turn out to cover a very limited rang ...
... According to this model, the Be star should have an evolved companion, either a helium star, a white dwarf, or a neutron star. However, despite the large estimated number of Be binaries, only Be/neutron star systems have been found. Be stars in Be/X-ray binaries turn out to cover a very limited rang ...
Article PDF - IOPscience
... detailed mass-transfer models, however, we show that the binary parameters of M82 X-2 are not surprising provided non-conservative mass transfer is allowed. Specifically, the donor-mass lower limit and orbital period measured for M82 X-2 lie near the most probable values predicted by population synth ...
... detailed mass-transfer models, however, we show that the binary parameters of M82 X-2 are not surprising provided non-conservative mass transfer is allowed. Specifically, the donor-mass lower limit and orbital period measured for M82 X-2 lie near the most probable values predicted by population synth ...
Forces - damtp
... properties have been well-studied.7 A more illuminating approach comes from considering the equation of motion (2.4) to be that of a particle of unit mass rolling8 under the action of gravity in a landscape the height of which above sea-level (say) is φ(x), as shown in the sketch. (Actually the heig ...
... properties have been well-studied.7 A more illuminating approach comes from considering the equation of motion (2.4) to be that of a particle of unit mass rolling8 under the action of gravity in a landscape the height of which above sea-level (say) is φ(x), as shown in the sketch. (Actually the heig ...
Electromagnetic oscillations of the Earth`s upper atmosphere (review)
... the system now contains also three components of induced magnetic field). Therefore, the wavy processes in the upper atmosphere have both a hydrodynamic and electromagnetic nature. In the large-scale wavy processes, the induced magnetic field enriches temporal spectrum with high frequencies and, the ...
... the system now contains also three components of induced magnetic field). Therefore, the wavy processes in the upper atmosphere have both a hydrodynamic and electromagnetic nature. In the large-scale wavy processes, the induced magnetic field enriches temporal spectrum with high frequencies and, the ...
Advanced Energetics for Aeronautical Applications
... space science STI in the world. The Program Office is also NASA’s institutional mechanism for disseminating the results of its research and development activities. These results are published by NASA in the NASA STI Report Series, which includes the following report types: ...
... space science STI in the world. The Program Office is also NASA’s institutional mechanism for disseminating the results of its research and development activities. These results are published by NASA in the NASA STI Report Series, which includes the following report types: ...
MHD seismology as a tool to diagnose the coronae of X
... these Sun-like stars have seed magnetic field generation in their interior, which transport outward to permeate their chromosphere and coronae in leading to the formation of transients (e.g., flares) as well as some form of MHD wave activity (e.g., Pandey & Srivastava 2009) similar to the transients ...
... these Sun-like stars have seed magnetic field generation in their interior, which transport outward to permeate their chromosphere and coronae in leading to the formation of transients (e.g., flares) as well as some form of MHD wave activity (e.g., Pandey & Srivastava 2009) similar to the transients ...