Results of the summarizing process for the arXiv paper: 2308.00851v1

In their study, Philip Holloway and colleagues investigate the detectability of strong gravitational lensing in near-infrared surveys. They focus on existing and forthcoming deep surveys, including those conducted by the James Webb Space Telescope (JWST) and the Visible and Infrared Survey Telescope for Astronomy (VISTA). To estimate the lensing frequency, they utilize the JAdes extraGalactic Ultradeep Artificial Realisations (JAGUAR) galaxy catalogue which incorporates comprehensive photometry and morphologies for each galaxy. While the JAGUAR simulations are limited in area and less suitable for wide-area surveys, the researchers extrapolate their findings to surveys carried out by Euclid and the Nancy Grace Roman Space Telescope. Importantly, their methodology does not make assumptions about the nature of the lens itself, allowing them to probe a wide range of lens masses. To verify their expectations, Holloway et al. generate realistic simulated lensed sources from the same catalogue and select those that have a signal-to-noise ratio greater than 20 that are detectable. They then compare these results with published lens samples selected in visible bands and find broad consistency. The authors report that JWST has potential to discover approximately 65 lensed systems in COSMOS-Web with around 25% of them having source redshifts exceeding 4. However deeper and narrower programs like JADES-Medium may find fewer systems (~25), albeit probing more typical source galaxies in terms of flux and mass. Furthermore their investigation reveals that 55-80% of surveyed regions have detectable multiple imaging suggesting that forthcoming near infrared surveys will likely uncover new diverse strong lens systems specifically higher redshift sources (e.g., JWST) as well as dustier more massive older sources (e.g., Euclid NISP) compared to those typically detected in corresponding visible surveys. Overall this study provides valuable insights into potential of near infrared surveys for discovering and characterizing strong gravitational lensing events which could lead to uncovering new types of lenses such as higher redshift sources or dustier more massive older sources compared to those typically found in visible band surveys.

• Philip Holloway and colleagues investigate detectability of strong gravitational lensing in near-infrared surveys
• Focus on existing and forthcoming deep surveys, including JWST and VISTA
• Utilize JAGUAR galaxy catalogue for estimating lensing frequency
• Extrapolate findings to surveys by Euclid and Nancy Grace Roman Space Telescope
• Methodology does not assume nature of lens, probes wide range of lens masses
• Generate realistic simulated lensed sources from same catalogue for verification
• JWST has potential to discover approximately 65 lensed systems in COSMOS-Web, with 25% having source redshifts exceeding 4
• Deeper and narrower programs like JADES-Medium may find fewer systems (~25), but probe more typical source galaxies in terms of flux and mass
• 55-80% of surveyed regions have detectable multiple imaging, suggesting new diverse strong lens systems will likely be uncovered in near-infrared surveys compared to visible surveys

Exploring the Detectability of Strong Gravitational Lensing in Near-Infrared Surveys

In a recent study, Philip Holloway and colleagues investigate the detectability of strong gravitational lensing in near-infrared surveys. They focus on existing and forthcoming deep surveys such as those conducted by the James Webb Space Telescope (JWST) and the Visible and Infrared Survey Telescope for Astronomy (VISTA). To estimate the lensing frequency, they utilize an extensive galaxy catalogue known as JAdes extraGalactic Ultradeep Artificial Realisations (JAGUAR). While this simulation is limited in area, it allows them to probe a wide range of lens masses without making assumptions about their nature.

Methodology

To verify their expectations, Holloway et al. generate realistic simulated sources from JAGUAR which have signal-to-noise ratios greater than 20 that are detectable. They then compare these results with published lens samples selected in visible bands and find broad consistency. The authors report that JWST has potential to discover approximately 65 lensed systems in COSMOS-Web with around 25% of them having source redshifts exceeding 4. However deeper and narrower programs like JADES-Medium may find fewer systems (~25), albeit probing more typical source galaxies in terms of flux and mass. Furthermore their investigation reveals that 55-80% of surveyed regions have detectable multiple imaging suggesting that forthcoming near infrared surveys will likely uncover new diverse strong lens systems specifically higher redshift sources (e.g., JWST) as well as dustier more massive older sources (e.g., Euclid NISP) compared to those typically detected in corresponding visible surveys.

Extrapolating Results to Other Surveys

The researchers extrapolate their findings from JAGUAR simulations to other surveys such as Euclid's Nancy Grace Roman Space Telescope mission or VISTA's Ultra Deep Survey program which both cover large areas but are less suitable for wide area studies due to lower resolution data available from these missions compared with ground based telescopes like Subaru or Keck Observatory which can provide much higher resolution images over smaller fields of view . This allows them to make predictions about what types of lenses could be discovered by these upcoming missions - e.g., higher redshift sources or dustier more massive older sources - which would not be possible using current visible band survey data alone due to limitations on sensitivity at longer wavelengths beyond ~1 micron wavelength range where most optical telescopes operate .

Conclusion

Overall this study provides valuable insights into potential of near infrared surveys for discovering and characterizing strong gravitational lensing events which could lead to uncovering new types of lenses such as higher redshift sources or dustier more massive older sources compared to those typically found in visible band surveys. By extrapolating results from existing simulations onto future deep space missions, researchers can gain a better understanding about how best use these powerful tools for exploring our universe’s mysteries further than ever before!