Questions tagged [pulsars]
A highly magnetised rotating compact star (black hole, neutron star, white dwarf) that emits beams of electromagnetic radiation out of its magnetic poles.
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What exerts torque on a pulsar? [duplicate]
I'm modeling a pulsar as a rotating compact body with frequency $\omega(t)$, and magnetic dipole moment misaligned from the axis of rotation by angle $\chi$. It's straightforward to calculate the ...
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Correlations in the Hellings-Downs curve for the NANOGrav 15-year dataset
I'm trying to reproduce the Figure 1c from the paper "The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background". This graph corresponds to pulsar pair correlations of the ...
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Particle motion due to frame dragging near a pulsar?
PSR J1748−2446ad is the fastest known pulsar rotating at 716 times per second. This neutron star is estimated to have a mass of less than two solar masses and a radius of less than 16km. The linear ...
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Biermann Mechanism [closed]
Biermann mechanism says that due to different masses of electrons and protons, the motion of former leads to the latter. This effect produces non-zero circular currents which induce vertical magnetic ...
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Synchrotron Emission: Physical Intuition for the Broad Spectrum
I understand what is happening to the electron to have it emit synchrotron light. However, I am not physically understanding the reason that a pulse of light that an observer sees will be made up of ...
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Pulsar rotation
Pulsars are said to be spinning objects from which two beams of radiation emanate in opposite directions.
Observed pulse rates range from on the order of one pulse per second to hundreds of pulses per ...
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Why is magnetic flux conserved in neutron star formation?
So in studying the topic of neutron stars I've encountered one particular detail that I've found no good explanation for. Most resources I have found say that the strong magnetic fields of neutron ...
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How can a pulsar slow down?
I saw in some astronomy textbooks that pulsars gradually slow down due to the loss of energy by its radiation. I wonder why this is possible?
Although the radiation is now not thermal but in the form ...
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Thomas Precession on Neutron Stars
We know that Thomas Precession is a relativistic correction that is applied to a particle spin that adds an angular velocity to the spin of the particle that moves along a curvilinear orbit linked to ...
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If a pulsar moves with a high velocity should the pulses from both poles be not paralel?
If a pulsar moves with a high velocity should the pulses from both poles be not paralel to each other? Should they as a continuum form a an angle between them exactly at the very location of the ...
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Is a pulsar EM-radiation affected by diffraction?
Is a pulsar EM-radiation affected by diffraction? As I understand gaussean beam theory there should exist different diffraction or if You want diffusion angles for different wavelengths, for example ...
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Is redshift acting on pulses from pulsars and how it changes the diffraction of the pulse and so its brightness?
Is redshift acting on pulses from pulsars and how it changes the diffraction of the pulse and so its brightness? As far as I know the diffraction becomes higher while wavelength increases as moving ...
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Are astrophysical jets at the poles of equal strength?
I know black hole and neutron star can eject subatomic charged particles as astrophysical jet, I am comparing our sun chaotic magnetic field vs those in black hole jet and pulsars. The former ...
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How do pulsars and magnetars emit lots of radiation?
Firstly I thought that Pulsars are rapidly rotating, highly magnetic compact stars. The rotating magnetic field of a pulsar acts as a generator, accelerating energetic charged particles that then ...
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Is the observed pulsar frequency the same as the neutron star rotation frequency?
Reading some papers about neutron stars, I found that some astronomers measured the frequency of a pulsar, which is a sort of lighthouse. My question is if the measured pulsar frequency is the same as ...
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