%0 Generic %1 witzemann2019prospects %A Witzemann, Amadeus %A Pourtsidou, Alkistis %A Santos, Mario G. %D 2019 %K library %T Prospects for cosmic magnification measurements using HI intensity mapping %U http://arxiv.org/abs/1907.00755 %X We investigate the prospects of measuring the cosmic magnification effect by cross-correlating neutral hydrogen intensity mapping (HI IM) maps with background optical galaxies. We forecast the signal-to-noise ratio for HI IM data from SKA1-MID and HIRAX, combined with LSST photometric galaxy samples. We find that, thanks to their different resolutions, SKA1-MID and HIRAX are highly complementary in such an analysis. We predict that SKA1-MID can achieve a detection with a signal-to-noise ratio of $10$ on a multipole range of $200$, while HIRAX can reach a signal-to-noise ratio of $30$ on $200 < < 2000$. We conclude that measurements of the cosmic magnification signal will be possible on a wide redshift range with foreground HI intensity maps up to $z 2$, while optimal results are obtained when $0.6 z 1.3$.

@misc{witzemann2019prospects, abstract = {We investigate the prospects of measuring the cosmic magnification effect by cross-correlating neutral hydrogen intensity mapping (HI IM) maps with background optical galaxies. We forecast the signal-to-noise ratio for HI IM data from SKA1-MID and HIRAX, combined with LSST photometric galaxy samples. We find that, thanks to their different resolutions, SKA1-MID and HIRAX are highly complementary in such an analysis. We predict that SKA1-MID can achieve a detection with a signal-to-noise ratio of $\sim 10$ on a multipole range of $\ell \lesssim 200$, while HIRAX can reach a signal-to-noise ratio of $\sim 30$ on $200 < \ell < 2000$. We conclude that measurements of the cosmic magnification signal will be possible on a wide redshift range with foreground HI intensity maps up to $z \lesssim 2$, while optimal results are obtained when $0.6 \lesssim z \lesssim 1.3$.}, added-at = {2019-07-02T06:32:02.000+0200}, author = {Witzemann, Amadeus and Pourtsidou, Alkistis and Santos, Mario G.}, biburl = {https://www.bibsonomy.org/bibtex/2f9b501167d58c33c38605df00e9b6a3e/gpkulkarni}, description = {Prospects for cosmic magnification measurements using HI intensity mapping}, interhash = {930757f97aa79fd02d542142c02a474a}, intrahash = {f9b501167d58c33c38605df00e9b6a3e}, keywords = {library}, note = {cite arxiv:1907.00755Comment: 7 pages, 7 figures, 1 table}, timestamp = {2019-07-02T06:32:02.000+0200}, title = {Prospects for cosmic magnification measurements using HI intensity mapping}, url = {http://arxiv.org/abs/1907.00755}, year = 2019 }