Hello everyone,
for my thesis work I am studying the ISW effect on the angular power spectrum for temperature fluctuations at low multipoles. In oder to do this, I need to reproduce, very simply with CAMB, the plot in Figure 2 of the following paper: https://arxiv.org/pdf/astro-ph/0307104, by entering the same values for the necessary parameters (I enclose the plot in question). The problem is that what I obtain is not the same as the result in the paper, even though there seems to be nothing wrong in the lines of code (again, I enclose screens of the code and plot). Can you explain why? Thank you very much.
P.S.: The three input files I enter at the beginning differ only in the value of w (the file "planck_2018.ini" contains w=-1, the file "w_06.ini" corresponds to w=-0.6, the file "w_2.ini" corresponds to w=-2).
for my thesis work I am studying the ISW effect on the angular power spectrum for temperature fluctuations at low multipoles. In oder to do this, I need to reproduce, very simply with CAMB, the plot in Figure 2 of the following paper: https://arxiv.org/pdf/astro-ph/0307104, by entering the same values for the necessary parameters (I enclose the plot in question). The problem is that what I obtain is not the same as the result in the paper, even though there seems to be nothing wrong in the lines of code (again, I enclose screens of the code and plot). Can you explain why? Thank you very much.
P.S.: The three input files I enter at the beginning differ only in the value of w (the file "planck_2018.ini" contains w=-1, the file "w_06.ini" corresponds to w=-0.6, the file "w_2.ini" corresponds to w=-2).
Statistics: Posted by Nicolò Rovazzani — June 06 2024