Type II supernovae (Inma Dominguez)
... After an initial phase, different for the different types of SNe, the LC is powered by the photons produced by the radioactive decay ...
... After an initial phase, different for the different types of SNe, the LC is powered by the photons produced by the radioactive decay ...
The Rigel Star - Emmi
... – Rigel will eventually cool to be a red supergiant, then explode into a supernova. – Although it is large, Rigel is not massive enough to create a black hole. – Rigel will probably become a neutron star or a pulsar within the next couple million years ...
... – Rigel will eventually cool to be a red supergiant, then explode into a supernova. – Although it is large, Rigel is not massive enough to create a black hole. – Rigel will probably become a neutron star or a pulsar within the next couple million years ...
Misalignment & Nucleosynthesis in Microquasars Yousaf M. Butt , Thomas J. Maccarone
... to, the proposed jet-secondary impacts as the source of the observed Li excess. For instance, as proposed by Guessoum & Kazanas (1999), even for well-aligned microquasars (as well as misaligned ones), it is plausible that surface irradiation of the secondary star by neutrons generated in the accreti ...
... to, the proposed jet-secondary impacts as the source of the observed Li excess. For instance, as proposed by Guessoum & Kazanas (1999), even for well-aligned microquasars (as well as misaligned ones), it is plausible that surface irradiation of the secondary star by neutrons generated in the accreti ...
Experimental_Neutrino_Physics
... implies accessible minimum mass (∝ Δm213) within reach of next generation ...
... implies accessible minimum mass (∝ Δm213) within reach of next generation ...
Acting Out the Life Cycle of Stars - University of Texas Astronomy
... As a class, we’re going to act out the life cycle of stars. Each of you will represent a small clump of gas, mostly made of hydrogen (since that’s by far the most abundant element in the Universe). a. We all start in random motion, wandering around aimlessly, mostly ignoring all other clumps of gas. ...
... As a class, we’re going to act out the life cycle of stars. Each of you will represent a small clump of gas, mostly made of hydrogen (since that’s by far the most abundant element in the Universe). a. We all start in random motion, wandering around aimlessly, mostly ignoring all other clumps of gas. ...
Hierarchical galaxy formation
... The core is crushed down to a point of INFINITE DENSITY with a gravitational field so intense that even light cannot escape… ...
... The core is crushed down to a point of INFINITE DENSITY with a gravitational field so intense that even light cannot escape… ...
Beyond the Solar System Homework for Geology 8
... 71. Very small, dense, dark stars that have used up their fuel and are no longer radiating any light are called __________ __________. 72. Very small dead stars that have radiated away some, but not all of their remaining light, are called: 73. Stars that radiate short pulses of radio energy are cal ...
... 71. Very small, dense, dark stars that have used up their fuel and are no longer radiating any light are called __________ __________. 72. Very small dead stars that have radiated away some, but not all of their remaining light, are called: 73. Stars that radiate short pulses of radio energy are cal ...
Lecture 9a: More on Star formation and evolution 10/22
... • Material ejected from forming stars • Pressure from light radiation from new stars (especially large ones) • Supernova explosions (which occur a few million years after a large star is formed) ! ejects material plus shock wave ...
... • Material ejected from forming stars • Pressure from light radiation from new stars (especially large ones) • Supernova explosions (which occur a few million years after a large star is formed) ! ejects material plus shock wave ...
Lecture7
... notes and FK for further details.) At this point, the central core is made predominantly of Fe, surrounded by layers of elements, from lighter to heavier, as you go from surface to center – looking like an onion (see Fig. II-68). This core, looking like an onion, is only the size of the earth. Howev ...
... notes and FK for further details.) At this point, the central core is made predominantly of Fe, surrounded by layers of elements, from lighter to heavier, as you go from surface to center – looking like an onion (see Fig. II-68). This core, looking like an onion, is only the size of the earth. Howev ...
Lecture 2
... core becomes hotter and hotter, and the helium burns faster and faster. Soon all the helium in the core has been converted to carbon. Again the core contracts and collapses, releasing ...
... core becomes hotter and hotter, and the helium burns faster and faster. Soon all the helium in the core has been converted to carbon. Again the core contracts and collapses, releasing ...
Multiple shocks near Mars Eduard Dubinin , Konrad Sauer , Klaus Baumgärtel
... equal although strong smaller-scale fluctuations remain. Bunching and oscillations in bi-ion plasma are clearly recognized in the plots of Fig. 5 which presents a space-time diagram of plasma/field variations. Figure 5a depicts the results of simulations for the case when shocks were not yet generat ...
... equal although strong smaller-scale fluctuations remain. Bunching and oscillations in bi-ion plasma are clearly recognized in the plots of Fig. 5 which presents a space-time diagram of plasma/field variations. Figure 5a depicts the results of simulations for the case when shocks were not yet generat ...
Image Credit: NASA,ESA, HEIC, Hubble
... • Iron core No more reactions can produce energy to hold out core • Star begins to collapse due to gravity • What stops the collapse? – Electron degeneracy pressure – Electrons resist when we try to place them in the same place (not the same thing as electrostatic repulsion) – As soon as the collap ...
... • Iron core No more reactions can produce energy to hold out core • Star begins to collapse due to gravity • What stops the collapse? – Electron degeneracy pressure – Electrons resist when we try to place them in the same place (not the same thing as electrostatic repulsion) – As soon as the collap ...
Document
... M ≤ 1.4 M : Electron degeneracy is reached at a relatively low T. Consequently, advanced nuclear burning is not reached. Support against gravity is provided by Pe. 1.4 M ≤ M ≤ 4 M : At the red giant phase, H burns in a shell, and He in another shell. Prad supports against gravity. Mass loss at th ...
... M ≤ 1.4 M : Electron degeneracy is reached at a relatively low T. Consequently, advanced nuclear burning is not reached. Support against gravity is provided by Pe. 1.4 M ≤ M ≤ 4 M : At the red giant phase, H burns in a shell, and He in another shell. Prad supports against gravity. Mass loss at th ...
Dynamics of neutrino-driven winds: inclusion of accurate weak
... B = 1015 G at low temperatures (T < 1010 K) and low densities (ρYe < 109 g cm−3 ). However when the MF is lower than 1015 G, such as 1013 and 1014 G, no significant differences are found. Actually because the curves for such low MFs nearly coincide with those without an MF, they are not shown in Fig ...
... B = 1015 G at low temperatures (T < 1010 K) and low densities (ρYe < 109 g cm−3 ). However when the MF is lower than 1015 G, such as 1013 and 1014 G, no significant differences are found. Actually because the curves for such low MFs nearly coincide with those without an MF, they are not shown in Fig ...
Ch. 18
... the study of X-ray binaries shows that some of these binary systems may have black holes rather than neutron stars. The Xray behavior of black hole systems differs from that of neutron stars because a neutron star has a surface and black holes do not. The most definitive evidence is obtained by meas ...
... the study of X-ray binaries shows that some of these binary systems may have black holes rather than neutron stars. The Xray behavior of black hole systems differs from that of neutron stars because a neutron star has a surface and black holes do not. The most definitive evidence is obtained by meas ...
P-nuclei
p-Nuclei (p stands for proton-rich) are certain proton-rich, naturally occurring isotopes of some elements between selenium and mercury which cannot be produced in either s- or r-process.