Computers and software • Re: CAMB seg faults with set_w_a_table
Halofit doesn't support general dark energy models.It just uses some "effective" w0-wa numbers set from the table at z=0 that may or may not approximately match the full model. Those parameters are...
View ArticleComputers and software • Cobaya: How to use tabulated w(a) from CAMB?
Hello all,I am a new user of Cobaya and CAMB, and I face some difficulties:The CAMB documentation says one can use the "DarkEnergyEqnOfState" class with a tabulated w(a). However, when I try to give...
View ArticleComputers and software • Re: Cobaya: How to use tabulated w(a) from CAMB?
Hello,I am afraid the tabulated w(a) cannot be directly used in Cobaya with the current implementation of CAMB. When the dark energy module is set up, w is expected to be a float, which is the reason...
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Computers and software • Problems in CAMB
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...
View ArticleComputers and software • Re: Problems in CAMB
CAMB calculates a consistent model, but the bottom plot you show is for no perturbations (defined in an unphysical way in the synchronous gauge). Unless the dark energy is Lambda, you have to have...
View ArticleComputers and software • [CAMB] Adjust omage lambda in python wrapper
Hi,I am using CAMB's Python wrapper, and I need to adjust the value of the dark energy density parameter, assuming it is in the form of a cosmological constant ([math]\Omega_\Lambda). I have two...
View ArticleComputers and software • Re: [CAMB] Adjust omage lambda in python wrapper
Yes, you need to also pass H0 or thetastar.Statistics: Posted by Antony Lewis — June 09 2024
View ArticleComputers and software • Re: PantheonPlus likelihoods in cobaya
They are there in latest versionStatistics: Posted by Antony Lewis — June 10 2024
View ArticleComputers and software • Cobaya: Could not find random point giving finite...
Hello all,I am a new user of Cobaya. I try to run "cobaya-run [input YAML file] --test", and I get this error message:[mcmc] Getting initial point... (this may take a few seconds)[model] *ERROR* Could...
View ArticleComputers and software • Re: Cobaya: Could not find random point giving...
Run with --debug to see values and points it is trying. Normally the likelihood is wrong, or parameter values are not set up sensibly.Statistics: Posted by Antony Lewis — June 12 2024
View ArticleComputers and software • CAMB, Cobaya, GetDist help assistant
I've added an GPT-powered chat assistant with knowledge of the latest CAMB, Coabaya and GetDist docs and examples. If you are logged in to CosmoCoffee you can try it at help_assist.phpThis may be...
View ArticleComputers and software • Cobaya Segmentation fault
Greetings,I work with a cluster with a Rocky Linux OS, which have a SLURM file management. I'm having a 'Segmentation fault' message error that ends the job before convergence.Here is the end part of...
View ArticleComputers and software • Sterile neutrinos in CAMB
After reviewing CAMB documentation (https://cosmologist.info/notes/CAMB.pdf), I am still not sure if CAMB default settings allow to add a partially thermalized sterile neutrino (in addition to the 3...
View ArticleComputers and software • Re: Sterile neutrinos in CAMB
You can use meffsterile and nnu when calling set_cosmology (following Planck paper definitions). More generally you can set the degeneracies of each individual eigenstate by setting the corresponding...
View ArticleJob vacancies • 2 Postdoctoral positions @University of Szczecin and...
The Szczecin Cosmology Group at the Institute of Physics of the University of Szczecin (http://cosmo.usz.edu.pl) and the Division of Intelligent Systems at the Department of Intelligent Technologies...
View ArticleConferences and meetings • Re: AI goes MAD^2, Madrid, October 14-16, 2024
Dear all,We are happy to inform you that the registration period for the "AI goes MAD^2" workshop is now extended to September 15th!The goal of the meeting is to bring together researchers from the...
View ArticleComputers and software • Help with CAMB
Dear Antony,I hope this message finds you well.I was trying to perform some calculations with CAMB by introducing a variation of the 𝑁_eff parameter (ΔNeff). In the "Neutrinos and Dark Radiation"...
View ArticleComputers and software • Re: Help with CAMB
From python, Code: nu_mass_numbers etc can just be assigned as lists or numpy arrays. You set the Code: nu_mass_fractions to determine how $\Omega_\nu h^2$ is divided between eigenstates.Statistics:...
View ArticleJob vacancies • Five Ph.D. positions at the National Centre for Nuclear...
The National Centre for Nuclear Research (NCBJ) in Poland invites applications for five PhD positions in the Astrophysics Division ( https://www.ncbj.gov.pl/en/astrophysics-division ). The...
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Conferences and meetings • XVII Tonale Winter School on Cosmology, 1 - 7...
==========================================================XVII TONALE WINTER SCHOOL ON COSMOLOGYTHEORY FOR OBSERVERS & OBSERVATIONS FOR THEORISTSPasso del Tonale - Italy1 - 7 December...
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