Why haven't we detected any Primordial black holes?
Q: TRUE OR FALSE A Black Hole’s singularity has zero radius yet can accommodate infinite mass.
A: SOlution: Is black hole has zero singularity and yet capable of taking all the mass inside.
Q: How does the lighthouse model explain pulsars? in two sentences.
A: Pulsars are spinning neutron stars that emit beams of radiation from their magnetic poles
Q: Why is it possible for repeated nova explosions to occur in the same binary system?
A: A binary star system is one in which two stars are bound to each other through gravity. They will…
Q: Is there a way to quantify Dark Matter?
A: Required : Is there a way to quantify Dark Matter ?
Q: If the Sun were to magically, and instantly, become a black hole; what would happen to the Earth’s…
A: Supernova are basically explosion of star
Q: Cepheid-stars, which are examples of “Standard Candles", are useful to astronomers as indicators of…
A: Solution: Cepheid variable stars and Type Ia supernovae are the most valuable standard candles.…
Q: Why primordial black holes are thought to be extinct?
A: Black holes are formed due to the gravitational collapse of massive stars when the fusion inside the…
Q: If the inner accretion disk around a black hole has a temperature of 1,000,000 K, at what wavelength…
A: Black holes are regions of large gravitational force in spacetime. The gravitational force is so…
Q: The best place to search for black holes is in a region of space that (a) is dark and empty; (b) has…
A: The black holes are the region of intense gravity and formed due to the collapsing of the entire…
Q: Is there a way to quantify Dark Matter?
A: Required : Is there a way to quantify Dark Matter.
Q: How do gamma-ray bursts provide insights into the most energetic events in the universe?
A: Gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant…
Q: How does a gravitational red-shift differ from a Doppler red shift?
A:
Q: Calculate the Eddington limit for star of 10³0 Msun.
A: In a star, the radiation pressure is constantly pushing away matter while gravity is pulling it in.…
Q: Are there different types of black holes?
A: Since you have posted multiple questions, we will provide the solution only to the first question as…
Q: 28) How accretion disk surrounding the black hole helps in its detection?
A: Black holes are generated when supermassive stars die. The gravitational collapse is so large that…
Q: Does observed gravitational lensing correspond to a converging or diverging lens? Explain briefly.
A: Gravitational lensing: In this effect, the light rays bend towards massive objects in the space due…
Q: What is the orbital period of a bit of matter in an accretion disk 2 x105 km from a 10-solar-mass…
A: Black holes are regions of high gravitational force in spacetime. The gravitational pull is so large…
Q: (Astronomy) Schwarzschild Radius. Part A: Find the Schwarzschild radius for the least massive…
A: please see the next step for solution
Q: Why do you expect neutron stars to spin rapidly?
A: Neutron stars are formed when stars with 4 to 8 solar mass die. When such a star runs out of fuel…
Q: Where do the γ bursts come from?
A: Gamma-ray bursts are one of the top unsolved mysteries in astrophysics, alongside such burning…
Q: Why did astronomers conclude that pulsars actually could not be pulsating stars?
A: Pulsars are defined as highly magnetized rotating neutron stars. They are capable of releasing beams…
Step by step
Solved in 3 steps
- The redshift due to the Doppler effect is caused by sources of light obscured by interstellar dust. sources of light moving away from the Solar System. an effect not yet believed to be understood. sources of light moving at right angles to the Solar System. sources of light moving toward the Solar System.What is dark matter? (200 words)Was the Big Bang an explosion? Explain your answer.