Yes, I had several exchanges with Brad leading up the paper -- my SKA configuration didn't line up with the baseline design due to a small error (it wound up being too densely packed). Brad's is more representative of what they actually proposed, which is a lot closer to HERA sensitivity-wise, since the collecting area is spread over a larger area.
On Thu, Jan 29, 2015 at 8:24 AM, Andrei Mesinger <[email protected]> wrote: > we briefly comment on this at the end of section 3. i think the two main > reasons are (i) as far as i understand, jonnie's original analysis had a > small numerical error which worked in SKA's favor; and (ii) our fiducial > analysis includes an additional 25% uncertainty accounting for errors in > numerical EoR implementations. indeed the later is the bottleneck in > nailing down the large-scales in our models (table 3), thus limiting the > scientific return from higher SKA sensitivity. SKA still does better in > narrow-band measurements (fig. 3), where the additional small-scale > information leverages the lack of information on the redshift evolution of > the large-scale power. > -a > > On 29.01.2015., at 17.05, Chris Carilli <[email protected]> wrote: > > > > > > Great. you should look at the new Greig and Mesinger paper on > sensitivities to cosmological parameters. hera seems to do very well wrt > ska. better than in Jonnie's analysis, i think. not sure why. > > > > cc > > > > > > > > On 01/29/2015 08:57 AM, Gianni Bernardi wrote: > >> Hi HERAtics, > >> as I mentioned at last week's telecon, I'm planning to attend the > reionization meeting in Greece next May and, after I've talked to the other > participants and heard what they propose to present, there is a slot > available to give an overview of HERA on the behalf of the collaboration. > I'd like to do that if everybody's happy with it and propose the following > title and abstract: > >> > >> Title: "Beyond the first generation of 21cm radio interferometers: the > Hydrogen Epoch of Reionization Array (HERA)" > >> > >> Abstract: "The ongoing pursuit of the redshifted 21cm signal by the > first generation of 21cm instruments (GMRT, LOFAR, MWA, PAPER) has > dramatically improved our knowledge of the instrumental design, > observational as well data analysis techniques required to detect the 21cm > signal. The Hydrogen Epoch of Reionization Array (HERA) is indeed a next > generation 21cm radio interferometer that draws from lessons from its > predecessors, particularly on array redundancy and foreground avoidance. In > my talk I will describe the HERA and its goals, as well as its early > deployment at the Karoo radio quiet site." > >> > >> I might not be able to calling in for the telecon tonight, so, please, > email me any input a/o amend related to above. If no objections, I'd submit > it later in the evening, > >> thanks > >> > >> Gianni > > > > > > >
