Which is the densest star and how much does it bend light rays?

[Ulysees]

Can someone tell me how much does a light ray bend when it passes over the surface of the densest star known?

Is it like 1 degree, or more like 30 degrees?

Please leave out black holes, this question is about normal stars, the densest one that is known.

Is Sirius the densest normal star known?

 

[pmb_phy]

Can someone tell me how much does a light ray bend when it passes over the surface of the densest star known?

Is it like 1 degree, or more like 30 degrees?

Please leave out black holes, this question is about normal stars.

Is Sirius the densest normal star known?

I believe the densest type of star would be a neutron star. Not sure about what the limits of the mass of such a star would be and that is qhat is needed to determine the maximum amount of deflection.

Pete

 

[Ulysees]

It can be shown that an onion-like distribution of mass is equivalent to a point mass (ie the field it produces outside is identical to that of a point mass, shell theorem). Therefore, if I give you the radius of a star, and its mass, can you work out the deflection?

If yes, would that be a numerical calculation or it can be done analytically too, in approximation?