i should have added that I also know the angular separation between the two images caused by the lens, the redshifts of both the lensing galaxy and the quasar, and the time delay between the two images. also, does anybody know which lensing model would be best for this scenario? I can use the...
Homework Statement
I am working on a project for my cosmology course. I need to determine the Hubble constant from time delay in a gravitational lens. We are using QSO 0957+561 for our data. My question is how do I determine the relevant distances Dl, Ds? I have Dls already. The...
thanks marcus that makes perfect sense! i was making it out to be more complicated than it was. how would you use the time delay to find the distance? the equation i have for Dls depends only on the redshift for the lens and the redshift for the source. should i be working with something...
Hi everyone,
First time posting, sorry if this is in the wrong format or wrong place. For a project in a cosmology course I need to find the Hubble constant from from time delay in a gravitational lens. the one we are using is QSO 0957+561. My question is how to I find the time delay from...