Subject: Re: xray line profiles From: Stan Owocki Date: Tue, 23 May 2006 18:42:38 -0400 To: luc@as.arizona.edu CC: Cohen David , Townsend Rich , Leutenegger Maurice , Fullerton Alex Luc, Thanks for doing this so quickly. It's nice to have explicit confirmation of this argument that the structure in our 2D sims of the LDI is too small to have much porosity effect on the line profiles. David Cohen and others are coming up for a day of discussion tomorrow, and so we may have some further feedback and/or questions on your calculation. Regards, Stan On May 21, 2006, at 9:47 PM, luc@as.arizona.edu wrote: > Hello Stan, > > I have computed the X-ray line profiles following the OC paper and > using the hydro sims from > the 2003 letter. I have put two figures on hermes.as.arizona.edu/ ~luc/stan > for cases with > q=0 and q=3. There are different panels for different R0 values, and in > each panel three curves > for different tau_star values. In practice, my tau_star scaling is > analogous but different from you tau_star since I work with the rho from > the hydro sims. However, the three curves would ressemble what you have > for tau_star=1,2, and 5. > > For each case, there are two curves: the solid line corresponds to the > spherically symmetric and > SMOOTH case, and the broken line corresponds to the 2D structured wind. In > this case, I > mapped one hydro input (12deg wedge) 9 times to cover along a direction > phi (cylindrical coord > p,phi,z, with the observer along z), the plane with theta = 0 to 180 deg > (angle to the line of sight) and p=0 to 10Rstar (remember that our hydro > sims do not extend to vinf, which means that in > these profiles, emission extends at most up to 90% vinf). When compuuting > the total profile, I multiply by 2pi, i.e. I actually do not use different > 2D hydro inputs in other phi angles to do > the integral in this direction as well since, as you can see, the effect > is really small. > > I tried to plot things the way you did in OC so you should find these > plots familiar. Bottom line, > using the structured outflow changes very modestly the line profiles, > although it introduces > some fine structure in the profiles. The skewness is not changed, nor the > relative flux between > line center and wing. As expected, not much porosity in our sims. > > Let me know your thoughts on this initial attempt. > Thanks, > > Luc