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| foregroundstelecon20210304 [2021/03/04 09:54] – created hanany | foregroundstelecon20210304 [2021/03/18 09:19] (current) – hanany | ||
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| - | Attendance: | + | Attendance: |
| Regrets: | Regrets: | ||
| Agenda: | Agenda: | ||
| - | * Updates | + | * Update from Kris |
| - | * | + | * Commander simulations - Oslo + Clem |
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| Notes: Shaul \\ | Notes: Shaul \\ | ||
| === Updates === | === Updates === | ||
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| + | * Kris gives an update on his work on low frequency foregrounds | ||
| + | * unpublished evidence from Quijote for significant variation of synchrotron beta | ||
| + | * Planck data for \ell>100 is dominated by noise, so we don't know the small scale structure | ||
| + | * Kris has a prescription for filling in small scale structure in a non-gaussian way; reminder: PySM is gaussian fill-in, so the new procedure is interesting, | ||
| + | * Brandon mentions that people (e.g. Clark) suggest using HI data. Kris says he is not using HI data. | ||
| + | * Discussion of \ell relevance: agreement that this is all relevant for lensing reconstruction at high \ell, not for low \ell data. MR points out that there is an indirect effect: averaging of small scales to larger patches will impact the large angular scale data as well. | ||
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| + | * Clem understands the reservations HK has regarding the signal. Simulations will need to be done with higher resolution. He is more puzzled about the noise issues. | ||