Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Chung, Dongwoo"'
(abr.) We consider the potential of future microwave spectrometers akin to PIXIE in light of the sky-averaged global signal expected from the total intensity of extragalactic carbon monoxide (CO) and ionized carbon ([CII]) line emission. We start fro
Externí odkaz:
http://arxiv.org/abs/2311.03297
Line-intensity mapping (LIM) experiments coming online now will survey fluctuations in aggregate emission in the [C II] ionized carbon line from galaxies at the end of reionization. Experimental progress must be matched by theoretical reassessments o
Externí odkaz:
http://arxiv.org/abs/2309.15733
Constraining the halo-ISM connection through multi-transition carbon monoxide line-intensity mapping
Autor:
Chung, Dongwoo T.
Publikováno v:
JCAP 12 (2023) 024
Line-intensity mapping (LIM) surveys will characterise the cosmological large-scale structure of emissivity in a range of atomic and molecular spectral lines, but existing literature rarely considers whether these surveys can recover excitation prope
Externí odkaz:
http://arxiv.org/abs/2309.03184
Autor:
Dunne, Delaney A., Cleary, Kieran A., Breysse, Patrick C., Chung, Dongwoo T., Ihle, Havard T., Bond, J. Richard, Eriksen, Hans Kristian, Gundersen, Joshua Ott, Keating, Laura C., Kim, Junhan, Lunde, Jonas Gahr Sturtzel, Murray, Norman, Padmanabhan, Hamsa, Philip, Liju, Stutzer, Nils-Ole, Tolgay, Doga, Wehus, Ingunn Katherine, Church, Sarah E., Gaier, Todd, Harris, Andrew I., Hobbs, Richard, Lamb, James W., Lawrence, Charles R., Readhead, Anthony C. S., Woody, David P.
We present a new upper limit on the cosmic molecular gas density at $z=2.4-3.4$ obtained using the first year of observations from the CO Mapping Array Project (COMAP). COMAP data cubes are stacked on the 3D positions of 243 quasars selected from the
Externí odkaz:
http://arxiv.org/abs/2304.09832
Autor:
Liang, Lichen, Feldmann, Robert, Murray, Norman, Narayanan, Desika, Hayward, Christopher C., Anglés-Alcázar, Daniel, Bassini, Luigi, Richings, Alexander J., Faucher-Giguère, Claude-André, Chung, Dongwoo T., Chan, Jennifer Y. H., Tolgay, Doǧa, Çatmabacak, Onur, Kereš, Dušan, Hopkins, Philip F.
Observations of local star-forming galaxies (SFGs) show a tight correlation between their singly ionized carbon line luminosity ($L_{\rm [C_{II}]}$) and star formation rate (SFR), suggesting that $L_{\rm [C_{II}]}$ may be a useful SFR tracer for gala
Externí odkaz:
http://arxiv.org/abs/2301.04149
We introduce a novel unbiased, cross-correlation estimator for the one-point statistics of cosmological random fields. One-point statistics are a useful tool for analysis of highly non-Gaussian density fields, while cross-correlations provide a power
Externí odkaz:
http://arxiv.org/abs/2210.14902
Autor:
Chung, Dongwoo T., Bangari, Ishika, Breysse, Patrick C., Ihle, Håvard T., Bond, J. Richard, Dunne, Delaney A., Padmanabhan, Hamsa, Philip, Liju, Rennie, Thomas J., Viero, Marco P.
We present the deconvolved distribution estimator (DDE), an extension of the voxel intensity distribution (VID), in the context of future observations proposed as part of the CO Mapping Array Project (COMAP). The DDE exploits the fact that the observ
Externí odkaz:
http://arxiv.org/abs/2210.14890
Autor:
Chung, Dongwoo T
Publikováno v:
Phys Rev D, 107, 023509 (2023)
We explore the possible application of linear covariance-based (LCB) filtering to line-intensity mapping (LIM) signal reconstructions. Originally introduced for reconstruction of the integrated Sachs-Wolfe effect in the cosmic microwave background, t
Externí odkaz:
http://arxiv.org/abs/2209.07500
Autor:
Chung, Dongwoo T
The wavelet scattering transform (WST) has recently gained attention in the context of large-scale structure studies, being a possible generator of summary statistics encapsulating non-Gaussianities beyond the reach of the conventional power spectrum
Externí odkaz:
http://arxiv.org/abs/2207.06383
We investigate the dust properties and star-formation signature of galaxies in the early universe by stacking 111227 objects in the recently released COSMOS catalogue on maps at wavelengths bracketing the peak of warmed dust emission. We find an elev
Externí odkaz:
http://arxiv.org/abs/2203.14312