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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Line-Intensity Mapping: 2017 Status Report
10 Pith papers cite this work, alongside 162 external citations. Polarity classification is still indexing.
10
Pith papers citing it
162
external citations · Pith
abstract
Following the first two annual intensity mapping workshops at Stanford in March 2016 and Johns Hopkins in June 2017, we report on the recent advances in theory, instrumentation and observation that were presented in these meetings and some of the opportunities and challenges that were identified looking forward. With preliminary detections of CO, [CII], Lya and low-redshift 21cm, and a host of experiments set to go online in the next few years, the field is rapidly progressing on all fronts, with great anticipation for a flood of new exciting results. This current snapshot provides an efficient reference for experts in related fields and a useful resource for nonspecialists. We begin by introducing the concept of line-intensity mapping and then discuss the broad array of science goals that will be enabled, ranging from the history of star formation, reionization and galaxy evolution to measuring baryon acoustic oscillations at high redshift and constraining theories of dark matter, modified gravity and dark energy. After reviewing the first detections reported to date, we survey the experimental landscape, presenting the parameters and capabilities of relevant instruments such as COMAP, mmIMe, AIM-CO, CCAT-p, TIME, CONCERTO, CHIME, HIRAX, HERA, STARFIRE, MeerKAT/SKA and SPHEREx. Finally, we describe recent theoretical advances: different approaches to modeling line luminosity functions, several techniques to separate the desired signal from foregrounds, statistical methods to analyze the data, and frameworks to generate realistic intensity map simulations.
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UNVERDICTED 10representative citing papers
Bursty high-redshift star formation boosts LIM shot-noise by line-dependent factors B_λ of 2.5-7 at z~6 via convolution of SFR correlations with SPS kernels, improving auto-spectrum detectability while degrading clustering measurements.
Using simulated binary black hole mergers and neutral hydrogen maps, the radio sirens method constrains H0 to 8% precision with 3000 high-SNR events, offering a 90% improvement over standard dark siren analyses.
A hybrid Fourier transform spectrometer with filterbank post-dispersion is proposed to reduce photon noise by over an order of magnitude while preserving imaging capabilities for R~1000 line intensity mapping.
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.
A cable-driven parallel robot for beam mapping achieves 2.7 mm RMSE absolute position error and 0.81 mm repeatability over a 400 mm workspace using computer-vision tracking.
Forecasts show SKA-Mid cross-correlations with ET/CE gravitational wave events can constrain GW source bias and time-delay distributions.
Simulations from COSMOS2020 show masking recovers [CII] above 300 GHz in ideal conditions but noise prevents useful S/N until near the end of 2000-hour observations.
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.
Reviews multiple higher-order statistics for 21-cm intensity mapping and forecasts their detectability with SKAO, incorporating noise and foreground effects.
citing papers explorer
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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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When galaxies burst: enhanced shot-noise for line-intensity mapping in the JWST era
Bursty high-redshift star formation boosts LIM shot-noise by line-dependent factors B_λ of 2.5-7 at z~6 via convolution of SFR correlations with SPS kernels, improving auto-spectrum detectability while degrading clustering measurements.
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Radio sirens: inferring $H_0$ with binary black holes and neutral hydrogen in the era of the Einstein Telescope and the SKA Observatory
Using simulated binary black hole mergers and neutral hydrogen maps, the radio sirens method constrains H0 to 8% precision with 3000 high-SNR events, offering a 90% improvement over standard dark siren analyses.
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Low-noise Fourier Transform Spectroscopy Enabled by Superconducting On-Chip Filterbank Spectrometers
A hybrid Fourier transform spectrometer with filterbank post-dispersion is proposed to reduce photon noise by over an order of magnitude while preserving imaging capabilities for R~1000 line intensity mapping.
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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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Development of a planar cable-driven parallel robot for submillimeter and terahertz beam mapping measurements
A cable-driven parallel robot for beam mapping achieves 2.7 mm RMSE absolute position error and 0.81 mm repeatability over a 400 mm workspace using computer-vision tracking.
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Using SKAO to Understand the Clustering of Gravitational Wave Sources
Forecasts show SKA-Mid cross-correlations with ET/CE gravitational wave events can constrain GW source bias and time-delay distributions.
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Testing masking effectiveness using multi-line image cubes based on COSMOS2020 for [CII] line intensity mapping at $z_{[CII]} > 3.5$
Simulations from COSMOS2020 show masking recovers [CII] above 300 GHz in ideal conditions but noise prevents useful S/N until near the end of 2000-hour observations.
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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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Cosmology with Intensity Mapping via Statistics Beyond the Power Spectrum in the SKAO Era
Reviews multiple higher-order statistics for 21-cm intensity mapping and forecasts their detectability with SKAO, incorporating noise and foreground effects.