Uploaded October 2024 | Updated September 2026, 1 week ago
Join Hugh Ross in this breaking News of the Day episode of Stars, Cells, and God. Hugh describes a search for dark photons, a candidate for comprising a large fraction of the universe’s dark matter. The search consisted of comparing a detailed map of the cosmic microwave background radiation (CMBR) with a catalog of more than 500 million galaxies.
• Dark matter makes up 24.5% of the universe.
• Probability of ordinary photons from the CMBR morphing into dark photons peaks when they pass through the plasma of electrons surrounding galaxy clusters.
• Loss of CMBR photons will be correlated with galaxy cluster positions and would make the CMBR map look more splotchy.
• The search team accounted for other effects known to distort the CMBR map.
• The search team found no evidence for dark photons. They placed an upper limit on dark photon contribution to dark matter more than 10 times lower than previous analyses.
• Future comparisons of the CMBR map with positions of denser, older galaxies will yield more stringent limits on dark photons.
• Axions remain as the leading candidate particles to comprise the majority of the universe’s dark matter.
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LINKS & RESOURCES -
Fiona McCarthy et al., “Dark Photon Limits from Patchy Dark Screening of the Cosmic Microwave Background,” journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.141003.
News of the Day episode: Dark Matter Particles? (June 24, 2024), youtube.com/watch?v=ZUYvX3HYHpU&t=90s
PLAYLIST – Stars, Cells, and God
_____________________________
HOST: Hugh Ross
_____________________________
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Join Hugh Ross in this breaking News of the Day episode of Stars, Cells, and God. Hugh describes a search for dark photons, a candidate for comprising a large fraction of the universe’s dark matter. The search consisted of comparing a detailed map of the cosmic microwave background radiation (CMBR) with a catalog of more than 500 million galaxies.
• Dark matter makes up 24.5% of the universe.
• Probability of ordinary photons from the CMBR morphing into dark photons peaks when they pass through the plasma of electrons surrounding galaxy clusters.
• Loss of CMBR photons will be correlated with galaxy cluster positions and would make the CMBR map look more splotchy.
• The search team accounted for other effects known to distort the CMBR map.
• The search team found no evidence for dark photons. They placed an upper limit on dark photon contribution to dark matter more than 10 times lower than previous analyses.
• Future comparisons of the CMBR map with positions of denser, older galaxies will yield more stringent limits on dark photons.
• Axions remain as the leading candidate particles to comprise the majority of the universe’s dark matter.
_____________________________
LINKS & RESOURCES -
Fiona McCarthy et al., “Dark Photon Limits from Patchy Dark Screening of the Cosmic Microwave Background,” journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.141003.
News of the Day episode: Dark Matter Particles? (June 24, 2024), youtube.com/watch?v=ZUYvX3HYHpU&t=90s
PLAYLIST – Stars, Cells, and God
_____________________________
HOST: Hugh Ross
_____________________________
CONNECT WITH US
▶️ Help us reveal God through #science by supporting Reasons to Believe at: support.reasons.org/donate-now?source=OLYOUTUBE
▶️ Follow RTB_Official for more #apologetics content!
Facebook: facebook.com/RTBofficial
Twitter: twitter.com/RTB_official
Instagram: instagram.com/rtb_official
Website: reasons.org
