
Introduction
... which stars die depends on their original mass. In low and intermediate mass stars (∼18 M ) death is preceded by the so-called planetary nebula phase. Our Sun will become a Planetary Nebula in some 5 billion years. Because by far most stars have masses below 8 M , the planetary nebula phase must b ...
... which stars die depends on their original mass. In low and intermediate mass stars (∼18 M ) death is preceded by the so-called planetary nebula phase. Our Sun will become a Planetary Nebula in some 5 billion years. Because by far most stars have masses below 8 M , the planetary nebula phase must b ...
Pretty Pictures of the Cosmos
... with the Hubble Space Telescope, distant galaxies form a dramatic backdrop for disrupted spiral galaxy Arp 188, the Tadpole Galaxy. The cosmic Tadpole is a mere 420 million light-years distant toward the northern constellation Draco. Its eye-catching tail is about 280 thousand light-years long and f ...
... with the Hubble Space Telescope, distant galaxies form a dramatic backdrop for disrupted spiral galaxy Arp 188, the Tadpole Galaxy. The cosmic Tadpole is a mere 420 million light-years distant toward the northern constellation Draco. Its eye-catching tail is about 280 thousand light-years long and f ...
Twitter Feed ITSO Symposium 2017
... galactic inflow/outflow, in understanding the factors affecting galaxy evolution. Disentangling the effect of internal (stellar mass) and external (environment) processes on the galaxy evolution is difficult because high mass galaxies tend to exist in dense environments. For the past decade, the dif ...
... galactic inflow/outflow, in understanding the factors affecting galaxy evolution. Disentangling the effect of internal (stellar mass) and external (environment) processes on the galaxy evolution is difficult because high mass galaxies tend to exist in dense environments. For the past decade, the dif ...
Progenitor neutron stars of the lightest and heaviest millisecond
... stage, 18 M has been ejected from the binary. Frictional dissipation of kinetic energy causes the binary to shrink and shortens its orbital period to ∼4 d. D: Supernova (SN) The outcome of SNIb/c determines the initial state for the IMXB/LMXB evolution stages (Tauris et al. 2011; Lin et al. 2011). ...
... stage, 18 M has been ejected from the binary. Frictional dissipation of kinetic energy causes the binary to shrink and shortens its orbital period to ∼4 d. D: Supernova (SN) The outcome of SNIb/c determines the initial state for the IMXB/LMXB evolution stages (Tauris et al. 2011; Lin et al. 2011). ...
Does gravity conserve angular momentum
... One of the most remarkable contributions of Oleg Jefimenko is that he developed gravitomagnetism while taking into account the distances between the source and the receptor by taking into account the retardation of the fields by the speed of light [2]. His theory is strictly based upon Oliver Heavis ...
... One of the most remarkable contributions of Oleg Jefimenko is that he developed gravitomagnetism while taking into account the distances between the source and the receptor by taking into account the retardation of the fields by the speed of light [2]. His theory is strictly based upon Oliver Heavis ...
stars - acpsd
... The ejection of stellar remnants is the low-mass star�supernova. On Earth, we measure the effects of this supernova in the increased luminosity. After a low-mass star�death (supernova), it often leaves behind material that forms new stellar bodies. This is the end of stars with low masses (less than ...
... The ejection of stellar remnants is the low-mass star�supernova. On Earth, we measure the effects of this supernova in the increased luminosity. After a low-mass star�death (supernova), it often leaves behind material that forms new stellar bodies. This is the end of stars with low masses (less than ...
Likely formation of general relativistic radiation pressure supported
... of Led . As if, a leaking and contracting balloon stops contraction as its self gravity fixes the leakage by forcing the molecules to move in (almost) closed circular orbits. Also, simultaneously, the attendant heat and pressure become large enough to resist further contraction. In a very strict sen ...
... of Led . As if, a leaking and contracting balloon stops contraction as its self gravity fixes the leakage by forcing the molecules to move in (almost) closed circular orbits. Also, simultaneously, the attendant heat and pressure become large enough to resist further contraction. In a very strict sen ...
Type I SuperNova
... of carbon in a white dwarf. In looking at the spectra of the supernova remnants, very little hydrogen spectra is observed. This might or might not make sense, because the white dwarf has little hydrogen to begin with, but the companion star has hydrogen. ...
... of carbon in a white dwarf. In looking at the spectra of the supernova remnants, very little hydrogen spectra is observed. This might or might not make sense, because the white dwarf has little hydrogen to begin with, but the companion star has hydrogen. ...
The fate of black hole singularities and the parameters of the
... beginning with an initial value p∗ and letting the system evolve through N generations. Let us define a function B(p) on P that is the expected number of future singularities generated during a lifetime of a universe with parameters5 p. We may observe that, for most p, B(p) is one, but there are sma ...
... beginning with an initial value p∗ and letting the system evolve through N generations. Let us define a function B(p) on P that is the expected number of future singularities generated during a lifetime of a universe with parameters5 p. We may observe that, for most p, B(p) is one, but there are sma ...
MAIN SEQUENCE STARS, Red Giants and White Dwarfs
... Dead Core Evolution • They are not massive enough to compress the C core to T > 7 x 108 K at which it could fuse, so these CSPN's just cool off and fade in power, slowly shrinking in size • BUT, when density of the core reaches 106 g/cm3 (or one ton / teaspoon!) the PAULI EXCLUSION PRINCIPLE takes ...
... Dead Core Evolution • They are not massive enough to compress the C core to T > 7 x 108 K at which it could fuse, so these CSPN's just cool off and fade in power, slowly shrinking in size • BUT, when density of the core reaches 106 g/cm3 (or one ton / teaspoon!) the PAULI EXCLUSION PRINCIPLE takes ...
RXTE PCA Contributions to Monitoring Fast Transients
... Perhaps interaction with the pulsar and the magnetosphere are involved. Other instabilities besides the thermal-viscous disk instability may cause the flips between quiescence and steady accretion. Several sources have had variable accretion in the range 10 34-1035 ergs s-1 for years, while others h ...
... Perhaps interaction with the pulsar and the magnetosphere are involved. Other instabilities besides the thermal-viscous disk instability may cause the flips between quiescence and steady accretion. Several sources have had variable accretion in the range 10 34-1035 ergs s-1 for years, while others h ...
The Formation of Population III Stars in Gas Accretion Stage: Effects
... in the region of n ∼ 1017 − 1018 cm−3 , where the circumstellar disk is expected to form. Thus, the magnetic field can dissipate in this region in a primordial cloud. In addition, the magnetic Reynolds number derived in equation (6) is not applicable, especially in the gas accretion phase after first ...
... in the region of n ∼ 1017 − 1018 cm−3 , where the circumstellar disk is expected to form. Thus, the magnetic field can dissipate in this region in a primordial cloud. In addition, the magnetic Reynolds number derived in equation (6) is not applicable, especially in the gas accretion phase after first ...
A Human-Powered Orrery - Astronomical Society of the Pacific
... generally come up are: 1) how “off ” are the planets due to the assumption of circular orbits (generally about the size of one of the circles or less) and 2), since it is assumed that the planet years are an even multiple of 16 days (8 for Mercury), how long is it before you have to correct for this ...
... generally come up are: 1) how “off ” are the planets due to the assumption of circular orbits (generally about the size of one of the circles or less) and 2), since it is assumed that the planet years are an even multiple of 16 days (8 for Mercury), how long is it before you have to correct for this ...
THE RADIOMETRIC BODE`S LAW AND EXTRASOLAR PLANETS
... fly-bys of the gas giants, as well as measurements of the Earth’s radio emission. In particular, Farrell et al. (1999) considered two forms of the radiometric Bode’s law, one incorporating measurements of only Jupiter and Saturn and the other incorporating all five magnetic planets. The former gives ...
... fly-bys of the gas giants, as well as measurements of the Earth’s radio emission. In particular, Farrell et al. (1999) considered two forms of the radiometric Bode’s law, one incorporating measurements of only Jupiter and Saturn and the other incorporating all five magnetic planets. The former gives ...