Who discovered the first pulsar?
Jocelyn Bell
Pulsars spin fast due to what physics concept?
L = mvrv = L/(mr) Conservation of Angular Momentum Largest ~700Hz Rapid Spin Rate
What is the average diameter of a pulsar?
Diameter = ~20km
How can pulsars help with nuclear physics?
Atomic Like Structures “atoms in the sky”
What does "PSC" stand for?
Pulsar Search Collaboratory
Which is correct for radio emission? a)large wave length, high frequency, high energy b)small wave length, low frequency, low energy c)large wave length, low frequency, low energy d)small wave length, high frequency, low energy
c.) large wave length, low frequency, low energy
What does "DM" stand for?
Dispersion Measure
How high can pulsar space velocities be?
Over 1500 km/s High Space Velocity
What household object can be compared to pulsars’ largest spin rate?
Largest ~700Hz Rapid Spin Rate Kitchen Blender
What is “noise”
Background radiation
What is the Dispersion Measure?
Dispersion Measure: A way measuring the number of electrons that a pulsar signal must pass through while traveling through space to the Earth. The units are parsecs per centimeter cubed. Don’t forget that direction matters! DM = Distance*Electron Density
What were pulsars first thought to be?
“Little Green Men” Theory ALIENS
What two reasons do pulsars have a strong magnetic field?
Strong Magnetic Field extremely powerful magnetic fields of Tesla -frozen magnetic field from the original star - rapid spin rate
How fast in hertz can a pulsar approximately spin?
Largest ~700Hz Rapid Spin Rate
Why do pulsars have a high space velocity?
Over 1500 km/s High Space Velocity Their supernova explosion was not perfectly symmetrical
What type of electromagnetic radiations do pulsars emit?
radio, optical, x-ray, gamma ray
What is ?
How can pulsars help further validate Einstein's Relativity Theories?
Are pulsars broad band or narrow band frequency?
Broad band frequency
What university were pulsars first discovered at?
High space velocity is the vector sum of which two vectors?
Over 1500 km/s High Space Velocity
How can pulsars assist with future space exploration?
Interstellar GPS System
Which telescope is the PSC data retrieved from?
The Green Bank Telescope: The world’s largest fully steerable object in the world.
Who are the three sponsors of the PSC?
What is "RFI"
Man-made Radio Frequency Interference
What type of electromagnetic radiation does the PSC observe pulsars in?
RADIO
What type of space velocity stars are pulsars? a)runaway stars b)halo stars c)hypervelocity stars
Over 1500 km/s High Space Velocity Hypervelocity Stars
Where is the Green Bank Telescope located?
Green Bank, West Virginia
How strong can pulsars’ magnetic fields be?
Strong Magnetic Field extremely powerful magnetic fields of Tesla -frozen magnetic field from the original star - rapid spin rate
How many solar masses is the Chandrasekhar Mass Limit?
Chandrasekhar Mass Limit 1.4 solar masses = × kilograms
How can pulsars assist in timing experiments?
Very Precise Spin Rates
What two officer positions are available in the Penn State PSC?
What can DM help to measure?
Dispersion Measure: A way measuring the number of electrons that a pulsar signal must pass through while traveling through space to the Earth. The units are parsecs per centimeter cubed. Don’t forget that direction matters! DM = Distance*Electron Density
What year were pulsars discovered?
Jocelyn Bell
Name all five pulsar properties.
What do white dwarfs, neutron stars, and black holes all have in common?
They are all at the end of a star’s life cycle.
What model is used to explain pulsars' pulse like signal?
LighthouseModel
What university founded the PSC?
What are the three categories you can categorize a PSC plot?
Pulsar RFI Noise
A pulsar is a super dense ______ star which emits dipole electromagnetic radiation.
neutron