____ the explanation that a pulsar pulses by rotating and funnelling energy outw
ID: 235075 • Letter: #
Question
____ the explanation that a pulsar pulses by rotating and funnelling energy outward via magnetic fields that are not aligned with the rotation axis ____ a very compact, dense stellar remnant composed mainly of neutrons, the fate of the core of a medium (core of 1.4 - 3 solar masses) mass star ____ a pulsating source associated with a rapidly rotating neutron star with an off axis magnetic field ____ a stellar explosion during which a star suddenly increases its brightness roughly a millionfold ____ an object whose gravity is so strong that the escape velocity from it exceeds the speed of light ____ a description of spacetime formulated by Einstein explaining how gravity affects the geometry of space and the flow of time ____ the red shift of photons leaving the gravitational field of any massive object ____ the distance from the center to the event horizon of a black hole ____ the concept from special relativity that space and time are both essential in describing the position, motion, and action of any object or event ____ theory formulated by Einstein to deal with the preferred status of the speed of lightExplanation / Answer
1. The explanation that the pulsar pulses by rotating and funnelling energy outward via magnetic fields that are not aligned with the rotation axis ===è e. Lighthouse model
2. A very compact, dense stellar remnant composed mainly of neutrons, the fate of the core of the medium (core of 1.3-4 solar masses) mass star===è b. Neutron star
3. A pulsation source associated with a rapidly rotating neutron star with an off axis magnetic field==è f. Pulsar
4. A stellar explosion during which a star increases its brightness by a millionfold===è a. Supernova
5. An object whose gravity is so strong that the escape velocity from it exceeds the speed of light==è j. black hole.
6. A description of space time formulated by Einstein explaining how gravity affects geometry of space and flow of time====è h. general theory of relativity
7. Redshift of the photons leaving the gravitational field of any massive object===è c. Gravitational redshift
8. The distance from the center to the event horizon of a black hole===è d. Schwarschild radius
9. The concept from special relativity that the space and time are required to predict the position, motion and action of any object or event===è i. Spacetime
10. Theory formulated by Einstein to deal with the preferred status of the speed of
light. ===èg. Special theory of relativity
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