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====== Telecon Notes Oct. 03, 2018 ====== | ====== Telecon Notes Oct. 03, 2018 ====== | ||
- | Attendance: | + | Attendance: |
Notes by: Karl Young \\ | Notes by: Karl Young \\ | ||
=== Agenda === | === Agenda === | ||
- | * Reviewers | + | |
* {{: | * {{: | ||
* {{: | * {{: | ||
* {{: | * {{: | ||
* {{: | * {{: | ||
+ | |||
+ | === Notes === | ||
+ | |||
+ | External Reviewers | ||
+ | * PDF has people involved in 2010 decadal survey. | ||
+ | * {{: | ||
+ | * Emails sent, some outstanding. | ||
+ | * 10-11 people have agreed to review parts or all of report. Names in document. | ||
+ | * Will telecon with steering committee next week. They also will review the report. | ||
+ | * More names for Shaul to email still. **Emails continue to be sent** | ||
+ | * Got some European Planck connections from Jacques. | ||
+ | * CL: Seems like a pretty long list, covers the territory. | ||
+ | * SH: Aiming for 15-20 people. | ||
+ | |||
+ | |||
+ | {{: | ||
+ | * Intro: SH pushing intro into matching rest of report and improving flow. | ||
+ | * SH: comments in capitals. | ||
+ | * This is work for SH, RF, DG, CH, NB. | ||
+ | * CH: just added a paragraph on tau to intro. | ||
+ | * NB/CH have added text on thermal history and secondary anisotropies. **SH will discuss with CH offline** | ||
+ | * DG has added some lensing and nuetrino mass and Neff. **SH will discuss with DG offline** | ||
+ | * TP: Should have definition of what PICO is in intro, in addition to science. So readers have context. | ||
+ | * SH: Current intro (as far as I got) is general to science, so the PICO definition is not critical. Current approach is to lay out science goals and then describe the experiment to meet those goals. | ||
+ | * TP: Some sort of abstract to introduce people to the science goals and PICO's role is valuable. Give people context early on. | ||
+ | * SH: Yes. Need a pico intro early on. Few lines in intro and/or executive summary. | ||
+ | * **RF to check first paragraph and introduce E/B modes.** | ||
+ | * CL: general comment. Say someplace that making contributions to meet science goals has to include how these contributions are beyond what can be done from ground. Or unique from. | ||
+ | * SH: Should highlight PICO unique abilities, but not everything has to exceed S4. CL/TP: but much of it does need to surpass S4. SH: yes | ||
+ | * CL: so describe science potential beyond Planck/ | ||
+ | * CL: discuss progression of current (S2) r=10^-2, LITEBird r=5x10^-3, S4 r=10^-4, PICO r=10^-4. | ||
+ | * RF: Agree, this should be in intro. | ||
+ | * RF: should intro focus on only where PICO is better? | ||
+ | * SH: Mention all science, but focus on places where PICO is best. | ||
+ | * Science objectives: | ||
+ | * **RF to update Figure 1** | ||
+ | * SH: also produce forecasts ? | ||
+ | * RF: if they aren't map based I don't believe them. | ||
+ | * SH: even these Fischer forecasts are a measure of horsepower. | ||
+ | * RF: should do at least what was done for S4. lowest level of assuming delensing and subtracting foregrounds. | ||
+ | * SH: current status. work is on r=3x10^-3 and r=0. analyzers are working hard, but it may not converge. then fischers are useful. | ||
+ | * RF: let's wait until they don't converge, otherwise is just a waste of time. (although they are fairly quick) | ||
+ | * SH: did S4 fischer forecasts agree with map based? to some extent? | ||
+ | * RF: on 3% of sky for S4 yes. But extrapolating to 40% of sky is too optimistic, ignores foregrounds. | ||
+ | * SH: For S4 does foregrounds increase error on r significantly above what simple noise gives? | ||
+ | * RF: Yes. See S4 science book. | ||
+ | * SH: Key question is what to do if map based doesn' | ||
+ | * Light relics / neutrino mass, **SH reviewing** | ||
+ | * **RF to ping Vera for her text input** | ||
+ | * 2.2.2, | ||
+ | * CH: status of error on tau? SH: all noise cases reach cosmic variance limit. | ||
+ | * RF ran some sims in real time. saw 0.002 with ~60% of sky. Stephen used 100% of sky to get 0.0015. Will use 60-70% of sky in final numbers. | ||
+ | * **CH will ask Stephen to write 2 sentences about exactly what he assumed.** | ||
+ | * CH: reionization section is pretty good. | ||
+ | * **CH: checking a kSZ statistic to see if PICO gives useful constraints.** | ||
+ | * Lensing added by van Engle. | ||
+ | * **CH talking to Mattieu to re-run tSZ with final PICO noise numbers** | ||
+ | * **CH doing some SZ -- LSST -- DESI cross correlations** | ||
+ | * **CH will clean up some leftover bullet points** | ||
+ | * {{: | ||
+ | * range with ell < 20 is something PICO can do that is hard for S4. | ||
+ | * SH: what is compelling number? | ||
+ | * Marcel: less than 1 is often mentioned. | ||
+ | * SH: should we include something about this result? | ||
+ | * RF: yes. in fundamental physics. | ||
+ | * SH: let's include and mention comes from cross correlation with LSST. | ||
+ | * **RF will expand 1 sentence that is already in text. Give this result.** | ||
+ | * Marcel: can also do correlation with sigma_8 as function of redshift and get to neutrino mass. May not be better than S4. | ||
+ | * SH: running the forecast is interesting. | ||
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