On the nature of the stellar-mass black-hole candidate X
... lower energy than the electrons in the hot plasma. This means that the high-energetic electrons can give some of their energy to the soft photons. The processes are a bit different for the hard state and the soft state. In the hard state the thermal comptonization is dominant, while in the soft stat ...
... lower energy than the electrons in the hot plasma. This means that the high-energetic electrons can give some of their energy to the soft photons. The processes are a bit different for the hard state and the soft state. In the hard state the thermal comptonization is dominant, while in the soft stat ...
supernova remnants: a link between massive stars and the
... Stars with main sequence masses beyond 20 − 25M seem to be associated with much more powerful explosions (with energies up to several 1052 erg). Such energies are out of reach for the neutrino-driven mechanism as discussed by Janka et al. (2004). The core of such stars probably collapses to a BH, w ...
... Stars with main sequence masses beyond 20 − 25M seem to be associated with much more powerful explosions (with energies up to several 1052 erg). Such energies are out of reach for the neutrino-driven mechanism as discussed by Janka et al. (2004). The core of such stars probably collapses to a BH, w ...
Lec10_ch12_deathofstars
... What do you think? • Will the Sun end its existence? If so, how? – The Sun will shed its outer layers as a planetary nebula in about 7 billions years. Its remnant white dwarf, with fusion ceased, will dim over the next several billion years ...
... What do you think? • Will the Sun end its existence? If so, how? – The Sun will shed its outer layers as a planetary nebula in about 7 billions years. Its remnant white dwarf, with fusion ceased, will dim over the next several billion years ...
Unravelling the Origin and Evolution of Our Galaxy
... unexpected orbits. Theories of planetary formation developed to explain the formation of our own Solar System predicted that they would not form so close to the central star, where temperatures are high, and where the amount of protoplanetary disc matter was believed to be small. A transit across th ...
... unexpected orbits. Theories of planetary formation developed to explain the formation of our own Solar System predicted that they would not form so close to the central star, where temperatures are high, and where the amount of protoplanetary disc matter was believed to be small. A transit across th ...
The figure below shows what scientists over 1000 years ago thought
... The Moon takes a longer time than any of the other satellites to orbit the Earth. Give one other way in which the Moon is different from the other satellites in the table. ...
... The Moon takes a longer time than any of the other satellites to orbit the Earth. Give one other way in which the Moon is different from the other satellites in the table. ...
The Stability of Exomoons in the Habitable Zone
... temperature of the star also plays a role. The latter is relevant because light of different wavelengths interact differently with the elements and compounds in the atmosphere, and as stars radiate like black bodies, the color of their light is highly temperature-dependant. The first step in this in ...
... temperature of the star also plays a role. The latter is relevant because light of different wavelengths interact differently with the elements and compounds in the atmosphere, and as stars radiate like black bodies, the color of their light is highly temperature-dependant. The first step in this in ...
1. INTRODUCTION
... within 3 AU is commonly accompanied by additional giant planets farther out, as demanded by dynamical evolution scenarios that involve mutual perturbations. Further Doppler measurements of existing and future planets can help ascertain the occurrence and character of multipleplanet systems. The broa ...
... within 3 AU is commonly accompanied by additional giant planets farther out, as demanded by dynamical evolution scenarios that involve mutual perturbations. Further Doppler measurements of existing and future planets can help ascertain the occurrence and character of multipleplanet systems. The broa ...
The Cosmic Perspective Our Galaxy
... 3. Young stars flow out of spiral arms. © 2014 Pearson Education, Inc. ...
... 3. Young stars flow out of spiral arms. © 2014 Pearson Education, Inc. ...
Chapter 16 - Follow “Ironmtn.wordpress.com”
... 56. What is the long-range impact of space debris and rock falling to Earth each day? What is the impact of this same material in outer space to the space program? Ans: Answers will vary but should include information about foreign biological materials which could be found within meteorites, small i ...
... 56. What is the long-range impact of space debris and rock falling to Earth each day? What is the impact of this same material in outer space to the space program? Ans: Answers will vary but should include information about foreign biological materials which could be found within meteorites, small i ...
Joint formation of QSOs and spheroids: QSOs as clocks of star
... In the introduction we have reviewed several pieces of evidence suggesting that star formation begins in the hosting spheroids at a time t* and proceeds vigoursly at least until the time tQSO, when the QSO shines. Here we estimate the duration of the star formation phase and its possible dependence ...
... In the introduction we have reviewed several pieces of evidence suggesting that star formation begins in the hosting spheroids at a time t* and proceeds vigoursly at least until the time tQSO, when the QSO shines. Here we estimate the duration of the star formation phase and its possible dependence ...
Chapter 17 Star Stuff Agenda How does a star`s mass affect nuclear
... • High-mass stars with >8MSun have short lives, eventually becoming hot enough to make iron, and end in supernova explosions • Low-mass stars with <2MSun have long lives, never become hot enough to fuse carbon nuclei, and end as white dwarfs • Intermediate mass stars can make elements heavier than c ...
... • High-mass stars with >8MSun have short lives, eventually becoming hot enough to make iron, and end in supernova explosions • Low-mass stars with <2MSun have long lives, never become hot enough to fuse carbon nuclei, and end as white dwarfs • Intermediate mass stars can make elements heavier than c ...
PH607lec12
... Merging galaxies look like train wrecks. Maybe they only look like train wrecks for a relatively short amount of time. Perhaps there are stabilizing forces, such as the galaxies' angular momentum and the large halos of dark matter that surround them, that help galaxies regain their orderly spiral s ...
... Merging galaxies look like train wrecks. Maybe they only look like train wrecks for a relatively short amount of time. Perhaps there are stabilizing forces, such as the galaxies' angular momentum and the large halos of dark matter that surround them, that help galaxies regain their orderly spiral s ...
Description of Pictures In the Dome
... below Alnitak, the star farthest left on Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. It is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which is similar to that ...
... below Alnitak, the star farthest left on Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. It is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which is similar to that ...