Forecasts indicate [Ne V] LIM cross-correlations can constrain mean AGN intensity and bias at cosmic noon with sensitivity to sources fainter than 5 sigma thresholds.
CDIM: Cosmic Dawn Intensity Mapper Final Report
5 Pith papers cite this work, alongside 18 external citations. Polarity classification is still indexing.
5
Pith papers citing it
18
external citations · Pith
abstract
The Cosmic Dawn Intensity Mapper (CDIM) will transform our understanding of the era of reionization when the Universe formed the first stars and galaxies, and UV photons ionized the neutral medium. CDIM goes beyond the capabilities of upcoming facilities by carrying out wide area spectro-imaging surveys, providing redshifts of galaxies and quasars during reionization as well as spectral lines that carry crucial information on their physical properties. CDIM will make use of unprecedented sensitivity to surface brightness to measure the intensity fluctuations of reionization on large-scales to provide a valuable and complementary dataset to 21-cm experiments. The baseline mission concept is an 83-cm infrared telescope equipped with a focal plane of 24 \times 20482 detectors capable of R = 300 spectro-imaging observations over the wavelength range of 0.75 to 7.5 {\mu}m using Linear Variable Filters (LVFs). CDIM provides a large field of view of 7.8 deg2 allowing efficient wide area surveys, and instead of moving instrumental components, spectroscopic mapping is obtained through a shift-and-stare strategy through spacecraft operations. CDIM design and capabilities focus on the needs of detecting faint galaxies and quasars during reionization and intensity fluctuation measurements of key spectral lines, including Lyman-{\alpha} and H{\alpha} radiation from the first stars and galaxies. The design is low risk, carries significant science and engineering margins, and makes use of technologies with high technical readiness level for space observations.
representative citing papers
Accreting black holes contribute 40-60% of the mean Hα intensity and 60-80% of the mean He II intensity at cosmic noon in LIM, dominating the shot-noise term and boosting small-scale power.
Simulations of SPHEREx line intensity maps show cross-correlations (e.g., Hα × [OIII] at z=5) can reach S/N up to 99, probing galaxies with M < 4×10^10 M⊙, though most signal comes from brighter directly detectable galaxies.
Reviews how cross-correlating SKAO 21-cm LIM with other lines like [CII], CO, and Ly-alpha can mitigate systematics, enhance sensitivity, and disentangle cosmological from astrophysical parameters.
The CosmoVerse White Paper compiles observational tensions in cosmology and maps strategies using improved systematics checks and tests of fundamental physics to resolve them.
citing papers explorer
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AGN Line-Intensity Mapping: A Probe of Faint Black Holes at Cosmic Noon
Forecasts indicate [Ne V] LIM cross-correlations can constrain mean AGN intensity and bias at cosmic noon with sensitivity to sources fainter than 5 sigma thresholds.
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Signatures of Accreting Black Holes in Line Intensity Mapping
Accreting black holes contribute 40-60% of the mean Hα intensity and 60-80% of the mean He II intensity at cosmic noon in LIM, dominating the shot-noise term and boosting small-scale power.
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On Cross-Correlating Line Intensity Maps from SPHEREx during Reionization
Simulations of SPHEREx line intensity maps show cross-correlations (e.g., Hα × [OIII] at z=5) can reach S/N up to 99, probing galaxies with M < 4×10^10 M⊙, though most signal comes from brighter directly detectable galaxies.
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Cosmology with Multi-Wavelength Line Intensity Mapping Synergies in the SKAO Era
Reviews how cross-correlating SKAO 21-cm LIM with other lines like [CII], CO, and Ly-alpha can mitigate systematics, enhance sensitivity, and disentangle cosmological from astrophysical parameters.
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The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
The CosmoVerse White Paper compiles observational tensions in cosmology and maps strategies using improved systematics checks and tests of fundamental physics to resolve them.