Constraining the Bulk Properties of Dense Matter by Measuring
... In addition to being an intriguing system from a binary evolution point of view, the unusual orbital characteristics are extremely useful for measuring the pulsar mass. By combining a precise measurement of the apsidal motion of this system (ω̇ = 86.58 ± 0.25 arcseconds per century) with Shapiro del ...
... In addition to being an intriguing system from a binary evolution point of view, the unusual orbital characteristics are extremely useful for measuring the pulsar mass. By combining a precise measurement of the apsidal motion of this system (ω̇ = 86.58 ± 0.25 arcseconds per century) with Shapiro del ...
The initial conditions and the large
... . The energy scales at stake in the Early Universe are orders of magnitude higher than anything we can reach on Earth. ...
... . The energy scales at stake in the Early Universe are orders of magnitude higher than anything we can reach on Earth. ...
The Question of Einstein`s Speculation E = mc2 and
... electric energy. Then the metric would imply a charged ball would increase its weight as the charge Q increased. However, this is in disagreement with experiments of Tsipenyuk and Andreev [24], who show that a metal ball would have decreased weight after it has been charged with electrons.8) Thus, t ...
... electric energy. Then the metric would imply a charged ball would increase its weight as the charge Q increased. However, this is in disagreement with experiments of Tsipenyuk and Andreev [24], who show that a metal ball would have decreased weight after it has been charged with electrons.8) Thus, t ...
Using gamma-rays to probe the clumped structure of stellar winds
... rapid flares of gamma-rays which, if detected, could spectrum during the transit of a clump through the be used to probe the size, density, and velocity of jet. For this specific calculation we have assumed wind inhomogeneties. the clump flow follows a typical β velocity law at an angle Ψ = 5 deg wi ...
... rapid flares of gamma-rays which, if detected, could spectrum during the transit of a clump through the be used to probe the size, density, and velocity of jet. For this specific calculation we have assumed wind inhomogeneties. the clump flow follows a typical β velocity law at an angle Ψ = 5 deg wi ...
NuSeti-2015 - Department of Physics and Astronomy
... Dyson shell(or Sphere) is a name for stars which are being harnessed by advanced civilizations and have energy being expended to sustain them, using up most of the radiation energy by having a bunch of absorbers around the star (Also possible, is mining a macroscopic black hole formed from a star wi ...
... Dyson shell(or Sphere) is a name for stars which are being harnessed by advanced civilizations and have energy being expended to sustain them, using up most of the radiation energy by having a bunch of absorbers around the star (Also possible, is mining a macroscopic black hole formed from a star wi ...
Physics Questions
... The car driver hears 440 Hz, but the van driver hears a lower frequency. The car driver hears 440 Hz, but the van driver hears a higher frequency. Both drivers hear the same frequency and it is lower than 440 Hz. ...
... The car driver hears 440 Hz, but the van driver hears a lower frequency. The car driver hears 440 Hz, but the van driver hears a higher frequency. Both drivers hear the same frequency and it is lower than 440 Hz. ...
Galaxy S-Stars Exhibit Orbital Angular Momentum Quantization per
... The pertinent orbital parameters [5] for the 27 S-stars are listed in Table 1. Note that some uncertainties in both the semi-major axis column and in the eccentricity column are quite a large percentage of the mean values. These uncertainties will become smaller as more of these stars complete their ...
... The pertinent orbital parameters [5] for the 27 S-stars are listed in Table 1. Note that some uncertainties in both the semi-major axis column and in the eccentricity column are quite a large percentage of the mean values. These uncertainties will become smaller as more of these stars complete their ...
Stellar-mass Black Hole Formation
... Masses greater than the maximum NS mass: 1.5-2.5 Msun (from detailed EOS calculations); 3.2 Msun (upper limit from causality; Lattimer & Prakash ) ~109 SMBHs in the Galaxy, from stellar popn modeling (Brown & Bethe 1994) 20 confirmed black holes in X-ray binaries, with secure masses (as of 2006) mas ...
... Masses greater than the maximum NS mass: 1.5-2.5 Msun (from detailed EOS calculations); 3.2 Msun (upper limit from causality; Lattimer & Prakash ) ~109 SMBHs in the Galaxy, from stellar popn modeling (Brown & Bethe 1994) 20 confirmed black holes in X-ray binaries, with secure masses (as of 2006) mas ...
Which Stars Form Black Holes and Neutron Stars?
... If further evidence accumulates that magnetars appear have >30 M⊙ progenitors, it would have implications for both the Galactic population of these unusual neutron stars, and for the evolution and deaths of massive stars. First, if magnetars only descend from massive progenitors, then they would be ...
... If further evidence accumulates that magnetars appear have >30 M⊙ progenitors, it would have implications for both the Galactic population of these unusual neutron stars, and for the evolution and deaths of massive stars. First, if magnetars only descend from massive progenitors, then they would be ...
Results from the AMANDA Neutrino Telescope
... AGNs: Stacking source analysis Neutrino astronomy could be the key for establishing the hadronic/leptonic origin of the HE photons from AGNs. Stacking-source analysis: The flux from AGNs of the same type integrated to enhance the statistics. single source ...
... AGNs: Stacking source analysis Neutrino astronomy could be the key for establishing the hadronic/leptonic origin of the HE photons from AGNs. Stacking-source analysis: The flux from AGNs of the same type integrated to enhance the statistics. single source ...
Components of the Milky Way
... • Giant molecular cloud forms a whole cluster of stars, may have mass of 106 Msun, size ~10 pc = 3 x 1019 cm • Molecular cloud core of a few Solar masses, perhaps 0.1 pc in size, forms one or (normally) a few stars. Estimate the characteristic time scales for these structures. ...
... • Giant molecular cloud forms a whole cluster of stars, may have mass of 106 Msun, size ~10 pc = 3 x 1019 cm • Molecular cloud core of a few Solar masses, perhaps 0.1 pc in size, forms one or (normally) a few stars. Estimate the characteristic time scales for these structures. ...
Lecture 2 - University of Washington
... matter experiences no net gravitational force from that shell. Newton’s second theorem: The gravitational force on a body that lies outside a closed spherical shell of matter is the same as it would be if all the shell’s matter were concentrated into a point at its center. Since the potentials add l ...
... matter experiences no net gravitational force from that shell. Newton’s second theorem: The gravitational force on a body that lies outside a closed spherical shell of matter is the same as it would be if all the shell’s matter were concentrated into a point at its center. Since the potentials add l ...
Tests of Alternative Theories of Gravity
... Quantization of gravity & unification with other forces [strings] predict the existence of PARTNERS to graviton Useful to contrast their predictions with G.R.: – What theoretical information can we extract from experimental data? ...
... Quantization of gravity & unification with other forces [strings] predict the existence of PARTNERS to graviton Useful to contrast their predictions with G.R.: – What theoretical information can we extract from experimental data? ...
Modern Physics and Subtle Realms: Not Mutually Exclusive
... It turns out that there are four interactions, or forces, known to modern physics. Two of these—the electromagnetic and gravitational interactions— are familiar in our macroscopic world, and two—the strong and weak forces— are predominantly subatomic. We presently believe that each of these four for ...
... It turns out that there are four interactions, or forces, known to modern physics. Two of these—the electromagnetic and gravitational interactions— are familiar in our macroscopic world, and two—the strong and weak forces— are predominantly subatomic. We presently believe that each of these four for ...
this contribution
... of the universe and not to the gravitation field, as would be encoded in its space-time geometry in accordance with Einstein’s general relativity. What we find, in the early universe, is an extraordinary uniformity, and this can be interpreted as the gravitational degrees of freedom that are potenti ...
... of the universe and not to the gravitation field, as would be encoded in its space-time geometry in accordance with Einstein’s general relativity. What we find, in the early universe, is an extraordinary uniformity, and this can be interpreted as the gravitational degrees of freedom that are potenti ...