supernova!
... These super-bright stars were first recognized as a special class by Fritz Zwicky, in the 1930s. (He also foresaw neutron stars and dark matter.) He was quite a character. ...
... These super-bright stars were first recognized as a special class by Fritz Zwicky, in the 1930s. (He also foresaw neutron stars and dark matter.) He was quite a character. ...
Lecture 18: Supernovae
... Supernova fades after a few months. Fading slows at late times Extra energy from gamma rays emitted by radioactive nickel and cobalt Fading rate depends on the amount of Ni created More nickel=slower fade Example: Supernova 1987a (by the way, SN are names by the year of their discovery + letters of ...
... Supernova fades after a few months. Fading slows at late times Extra energy from gamma rays emitted by radioactive nickel and cobalt Fading rate depends on the amount of Ni created More nickel=slower fade Example: Supernova 1987a (by the way, SN are names by the year of their discovery + letters of ...
Powerpoint for today
... Ejection speeds 1000's to 10,000's of km/sec! (see DEMO) Remnant is a “neutron star” or “black hole”. ...
... Ejection speeds 1000's to 10,000's of km/sec! (see DEMO) Remnant is a “neutron star” or “black hole”. ...
Chapter 20 Notes (smaller PDF file)
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do ...
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do ...
large PDF file
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do ...
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do ...
Chapter 13
... Nearby supernovae (< 50 light years) could kill many life forms on Earth through gamma radiation and high-energy particles. ...
... Nearby supernovae (< 50 light years) could kill many life forms on Earth through gamma radiation and high-energy particles. ...
Supernova
... Current thinking B – Once the Chandrasekhar limit is reached, electron degeneracy pressure can no longer support the strong gravitational pull, the temperature will rise, and carbon will fuse explosively in the dwarf. The carbon/oxygen fuse explosively, blowing the entire system into space and leavi ...
... Current thinking B – Once the Chandrasekhar limit is reached, electron degeneracy pressure can no longer support the strong gravitational pull, the temperature will rise, and carbon will fuse explosively in the dwarf. The carbon/oxygen fuse explosively, blowing the entire system into space and leavi ...
dtu7ech13 - Fort Thomas Independent Schools
... The Sun will shed matter as a planetary nebula in about 6 billion years and then cease nuclear fusion. Its remnant white dwarf will dim over the succeeding billions of years. What is a nova? A nova is a relatively gentle explosion of hydrogen gas on the surface of a white dwarf in a binary star syst ...
... The Sun will shed matter as a planetary nebula in about 6 billion years and then cease nuclear fusion. Its remnant white dwarf will dim over the succeeding billions of years. What is a nova? A nova is a relatively gentle explosion of hydrogen gas on the surface of a white dwarf in a binary star syst ...
Powerpoint Presentation (large file)
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do ...
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do ...
The Birth of a Supernova Seen in Real Time
... lower than those of typical GRB afterglows, but comparable to the radio luminosities observed for nearby core-collapse SNe. Based on our modeling of the temporal and spectral evolution of the radio emission, we firmly constrain the velocity of the fastest ejecta to be just υ =0.25c with a kinetic en ...
... lower than those of typical GRB afterglows, but comparable to the radio luminosities observed for nearby core-collapse SNe. Based on our modeling of the temporal and spectral evolution of the radio emission, we firmly constrain the velocity of the fastest ejecta to be just υ =0.25c with a kinetic en ...
File
... 23) What are the three classifications of galaxies? What do each look like? Which is most common? 24) What shape is the Milky Way? 25) What is the local group? 26) How many stars are in the Milky Way? 27) Approximately how big is the Milky Way 28) The largest known galaxy is what type of galaxy? 29) ...
... 23) What are the three classifications of galaxies? What do each look like? Which is most common? 24) What shape is the Milky Way? 25) What is the local group? 26) How many stars are in the Milky Way? 27) Approximately how big is the Milky Way 28) The largest known galaxy is what type of galaxy? 29) ...
Stellar Explosions
... What was the significance of elements spreading across space? ANSWER: Shortly after the Big Bang, the universe was composed mostly of hydrogen with some helium. The question is how did the other elements form? The idea of nuclear fusion forming all the elements up to that of iron works, but it canno ...
... What was the significance of elements spreading across space? ANSWER: Shortly after the Big Bang, the universe was composed mostly of hydrogen with some helium. The question is how did the other elements form? The idea of nuclear fusion forming all the elements up to that of iron works, but it canno ...
Introduction to Astronomy
... • Also faintly visible at other wavelengths • A few hundred are now known • What are they? Rapidly spinning neutron stars, whose strong magnetic fields accelerate plasma to produce the beam of radio waves ...
... • Also faintly visible at other wavelengths • A few hundred are now known • What are they? Rapidly spinning neutron stars, whose strong magnetic fields accelerate plasma to produce the beam of radio waves ...
Stellar Explosions
... Elements that can be formed through successive alpha-particle fusion are more abundant than those created by other fusion reactions: ...
... Elements that can be formed through successive alpha-particle fusion are more abundant than those created by other fusion reactions: ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... the pulsar could just not be pointing in the right direction for us to see them, or the supernova could have been from a hugely massive star that left behind a black hole rather than a pulsar. Sometimes there’s just no way to know. We observe supernovae now where the type is in doubt; the lightcurve ...
... the pulsar could just not be pointing in the right direction for us to see them, or the supernova could have been from a hugely massive star that left behind a black hole rather than a pulsar. Sometimes there’s just no way to know. We observe supernovae now where the type is in doubt; the lightcurve ...
Supernova Stalking - Susanna Kumlien Reportage
... a so-called Standard Candle. A Standard Candle is an object astronomers can use to measure distances in the universe, taking advantage of its known properties. With its distance from Earth of only some 12 million light years, considered to be “nearby” by cosmological standards, the supernova´s proxi ...
... a so-called Standard Candle. A Standard Candle is an object astronomers can use to measure distances in the universe, taking advantage of its known properties. With its distance from Earth of only some 12 million light years, considered to be “nearby” by cosmological standards, the supernova´s proxi ...
Supernovae, Neutron Stars, Black Holes
... as plutonium-244, 244Pu, (81 million years). The short-lived isotopes are particularly interesting. If they formed in an exploding star, that explosion might have triggered the collapse of the huge interstellar cloud in which the Sun formed. ...
... as plutonium-244, 244Pu, (81 million years). The short-lived isotopes are particularly interesting. If they formed in an exploding star, that explosion might have triggered the collapse of the huge interstellar cloud in which the Sun formed. ...
Deep Space Mystery Note Form 2
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
ASTRONOMY 120
... Supernova 1987A is the closest supernova to Earth in the telescope era. While it was not in our Galaxy, it occurred in one of our satellite galaxies, the Large Magellanic Cloud. This made Supernova 1987A very accessible and easy to see. The distance to the LMC is very well determined, so astronomers ...
... Supernova 1987A is the closest supernova to Earth in the telescope era. While it was not in our Galaxy, it occurred in one of our satellite galaxies, the Large Magellanic Cloud. This made Supernova 1987A very accessible and easy to see. The distance to the LMC is very well determined, so astronomers ...
VLA 90 cm Brogan et al. (2006)
... • Core collapses until it becomes as dense as material can possibly be and a neutron star or black hole is formed • Infalling material from outer layers bounces off dense core • In tremendous release of energy, elements heavier than iron are formed and are spread into space ...
... • Core collapses until it becomes as dense as material can possibly be and a neutron star or black hole is formed • Infalling material from outer layers bounces off dense core • In tremendous release of energy, elements heavier than iron are formed and are spread into space ...
“Reach for the Stars” Practice Exam
... d. What characteristic varies to cause this fluctuation? ______________ e. The large numbers along the X-axis, card 28, record passing days on the Julian calendar. About how many days pass between consecutive peaks? ______________ f. Which image card (14, 10, 21, 2, 19, or 1) displays the evolutiona ...
... d. What characteristic varies to cause this fluctuation? ______________ e. The large numbers along the X-axis, card 28, record passing days on the Julian calendar. About how many days pass between consecutive peaks? ______________ f. Which image card (14, 10, 21, 2, 19, or 1) displays the evolutiona ...
The Pulsar “Lighthouse”
... exceeds that of whole galaxy full (1011) of stars. • But far greater luminosity in neutrinos • e- + p Î n + neutrino ...
... exceeds that of whole galaxy full (1011) of stars. • But far greater luminosity in neutrinos • e- + p Î n + neutrino ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.