What are 3 differences between quasars and pulsars?
913060
1. Size -- quasars are huge structures, while pulsars are neutron stars about the size of Earth\n\n2. Energy output -- quasars blast immense amounts of energy into space. Pulsars are more "quiet."\n\n3. Rotation -- quasars seem to be relatively free of rapid motion, while pulsars spin at extremely high velocities (..about 1 revolution in less than a second.)
561018
Dear ashish, \nI'm a student aspiring to study astrophysics. there is no much difference between astronomy and astrophysics. the difference is astronomy deals with all the aspects related to the formation and existence of universe , but astrophysics is that branch of astronomy dealing with the formation of galaxies , clusters and stars. Even astrophysics deals with the study of universe . But astrophysics is a specific study of universe . Johannes Kepler is called as the father of astrophysics.it is better to study astrophysics in today's world because astrophysics is given much importance in NASA,ESA ,ISRO etc... to know more information about astrophysics contact the Indian institute of astrophysics , Bangalore or log on to www.iiap.ernet.com or log on to www.nasa.gov and search for information about astrophysics in yahoo.com itself.
344500
Yes the difference between the two are still the speed of light -- it's because at speed of light, or even just factions of the speed of light "normal" Neut on physics stops and only relativity theory explains what happens.  At speed of light time no longer move at the same rate, so the two object will not have same reference in time, and since speed is distance over time, the comparison make little sense to the normal perception of how things work.\n\nAn that ultimately explain why the difference between the two is not 1000 miles per hour.
511957
When a star die, it may become a white dwarf or cause a supernova explosion according to there masses.If a star is more than chandra limit (1.44times the sun mass)the outer envelope increases in size due to loss of energy.the inner core still shrinks under the imbalanced force of gravity.the force increases to such an effect that the electrons are also sucked in the nucleus and the star is now composed of protons only.hence it emits radio waves called pulsar and the star is called a neutron star.
40033
It is equal to about 3.26 light years. Parsec stands for "PARallax of one arc SECond". It is extensively used in measuring astronomical distances.\n\nIt is based on the method of trigonometric parallax, one of the most ancient and standard methods of determining stellar distances. The angle subtended at a star by the mean radius of the Earth's orbit, around the Sun, is called the parallax. The parsec is defined to be the distance from the Earth of a star that has a parallax of 1 arcsecond. Alternatively, the parsec is the distance at which two objects, separated by 1 astronomical unit, appear to be separated by an angle of 1 arcsecond.\n\nSee: http://en.wikipedia.org/wiki/Parsec
910455
A pulsar is a neutron star that has a strong magnetic field that is swept around as the neutron star rotates.  The swept magnetic field creates a beamed "pulse".  A neutron star could fail to be seen as a pulsar because:\n1) it's not rotating fast\n2) it doesn't have a strong magnetic field\n3) the magnetic pole on the neutron star is not displaced from the rotational pole\n4) the swept magnetic field does not have the right density of plasma to interact with\n5) the "beam" of the pulsar is not pointed at the Earth.
901635
1\na.  distance, slower\nb. weaker gravitational pull farther away\n2\na. 750.353 km\nb. 4.67 cm\nc. Not enough info\n\nPS please award best answer
406616
There are two main divisions, Theoretical and experimental.\nThere are different areas of expertise as well, solild state, low temperature, etc.\nThey may be specialize in Classical Mechanics, Electricity and Magnetism, Quantum Mechanics, Statistical Physics, Special Relativity or even Quantum Field theory.  That's not counting Astronomy.
358457
There are three kinds of Cosmic Rays. There are the Galactic Cosmic Rays, coming from outside the solar system. The Anomalous Cosmic Rays, coming from the interstellar space at the edge of the heliopause and the Solar Energetic Particles, associated with solar flares and other energetic solar events. The are a by product of the natural burning process of a star and a natural process of a dying star. I have included a link below that will give you a detailed description of the process, it is in lay terms so to speak. I hope that it can answer your questions. It will set you straight on whether the cosmic rays are "Highly Charged" or "Radio Active". Just remember that a Neutron is the part of an atom that has no charge. It is part of the nucleus. Good luck and happy reading.
761664
Pulsar's period, T = 0.033 sec and is increasing at a rate of 1.26 x 10^-5 sec per year\n\n(a) Angular acceleration, α = ∆ω/∆t\n\nwhere ω = 2π/T = 6.283/0.033 = 190.39 rad/sec\n\nSince the period increases by 1.26 x 10^-5 sec per year, then\n\n∆T = 1.26 x 10^-5 sec => T' = T + ∆T = 0.0330126 sec\n\nω' = 2π/T' = 6.283/0.0330126 = 190.32 rad/sec\n\nHence = ∆ω = ω' - ω = -0.07267\n\nNow, α = ∆ω/∆t = -0.07267/31536000 = 2.3 x 10^-9 rad/sec^2\n\n(b) ω' = ω + αt, set  ω' = 0, solve for t:\n\nt = -ω/α = (190.39)/(2.3 x 10^-9) = 82,624,112,123.83 sec\n\nor 2,620 years\n\n(c) ω = ω(0) + αt, set t = (2006-1054)x365x24x60x60 sec\n\nω(0) = ω - αt = 190.39 - (-(2.3 x 10^-9)(30022272000))\n\nω(0) = 190.39 + 69.05 = 259.44 rad/sec or its initial period\n\nT(0) = 0.024 sec
952203
they are called Pulsars.
921964
From the website taken among the other answers, I took this quasar with its 4 to 5 million - billions times brighter than the sun. If this light is the same as here around the sun, I consider that the total energy on a given sphere is a constant. But the energy density is directly related to the surface of the corresponding sphere. It growth to the second power of its radius. In other words, when the energy is 4 times the one of the sune, the earth has to be at 2 AU (300 000 000 km) from the sun to get the same light level. Having a 4 to 5 * 10^15 (million - billion) more light means 70 000 000 AU to get the same light level. Since 1 AU is 150 000 000 km, this means a 10^16 km away from the light source. This represents a 1000 light years of travel. The closest star, besides the sun, is a 4.5 light years.\nThat's bright !\n\nAnother source gives hypernovae as brightest. A value of 3 * 10^46 J is given as the same energy level as the universe (for two seconds). To have an analogous, it's necessary to go for the big bang theory. If we receive one joule per square meter and per day on earth from the sun, then the corresponding sphere for this flash is 5 millions light years big. That's brighter but damn short. Two seconds !\n\nI have a third candidate. It was much shorter and much brighter. The big band itself.
445478
It is called a QUAsi-StellAR Object or quasar.\n\nNowadays they are generally believed to be galactic cores with enormous black holes at their center.\n\nIt appears starlike (quasi-stellar) but is actually very different in size and what it's made of.
138258
try these sites: http://www.phy.ornl.gov/astrophysics/data/cf88/\n\nhttp://www.llnl.gov/science_on_lasers/07AstSpace/AS-F_Ther.html\n\nhttp://arxiv.org/abs/astro-ph/9801028\n\nI hope this helps....\n\nDon
1130129
In the 1980s, unified models were developed in which quasars were viewed as simply a class of active galaxies, and a general consensus has emerged that in many cases it is simply the viewing angle that distinguishes them from other classes, such as blazars and radio galaxies. The huge luminosity of quasars is believed to be a result of friction caused by gas and dust falling into the accretion discs of supermassive black holes, which can convert about half of the mass of an object into energy as compared to a few percent for nuclear fusion processes.
638619
PROTONS AND NEUTRONS ARE MADE OF QUARKS.SIX TYPES OF QUARKS ARE RECOGNIZED AND EACH IS KNOWN AS A FLAVOR.THERE IS NOT A ORBIT LEVEL BUT A STRONG FORCE.BINDING ENERGY CAN BE CALCULATED FOR EACH NUCLEUS AND IS ONE INDICATOR OF NUCLEAR STIBILITY.
684858
Alpha Centauri is only 4.3 light years away. Sirius is 8.6, Both are binary stars, two stars in a star system.