Recent content by astrofunk21

Hey all! I am prepping myself for a quantum course next semester at the graduate level. I am currently reading through the Cohen-Tannoudji Quantum Mechanics textbook. I have reached a section on the density operator and am confused about the general concept of the operator. My confusion stems...

Question: Solve and make a dimensional analysis in order to ensure the equation is really dimensionless.

Homework Statement I am tasked with solving and creating a dimensionless equation from a differential equation given. Homework Equations This is the given equation: The Attempt at a Solution When doing the dimensional analysis I see that we are left with units of [m-3][kg1][s-2]. These...

Thanks for the response. I should've clarified! Rather than "died" I should've said turned off the Main Sequence!

Hi everyone, I am currently looking to calculate the amount of stars that die within a certain time-frame. I am trying to go about this using the Salpeter IMF to figure the distribution of star masses... ∫M⋅Φ(M)dM From here I would need to use star mass to calculate the lifetime of stars as a...

To add onto this, the metagalactic ionizing radiation field should be taken as sort of an O-type star in the case of a Stromgren Sphere. Also I'm pretty sure the ionization of H means the mass fraction of ionized gas...right?

Hey guys, so I'm working on a project and was given some slightly vague instructions. I am supposed to be using a metagalactic ionizing radiation field value (Gamma) to find the ionization of Hydrogen as a function of density. I'm coming to you guys with a vague description because I'm hoping...

Is it that hard? Haha

Anything?

Homework Statement Find the general solutions of the following 1st-order DE: y' = by2+(1/4bx2) where b ≠ 0 is a constant. Homework Equations Now this is a Riccati Equation, I know that. In my math class we've only learned to solve DEs the following ways: a. Separation of Variables b...

No it's not, I got N=1-2xy3 and M=-2y4 which their partials don't equal each other

Thanks! Could you help with the other equation I posted? This one I don't even have a clue how to start

F(x,y) = y5-x2y + C ?

Could you help with another? The differential equation is: y' = 2(xy' + y)y3

finding the solution to the f(y) gives us y5 then plugging this into the integral part we get a solution of: F(x,y) = y5-x2y Is that it?