Starts 28 Aug 2025 16:00
Ends 28 Aug 2025 17:00
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HECAP Seminar - Search for Dark Matter Over a Wide Mass Range: Using JWST and Neutrino Telescopes to Search for Non-Gravitational Signatures of Dark Matter
Hybrid
Leonardo Building - Luigi Stasi Seminar Room and on Zoom
Abstract:
In this talk, I will discuss two different ways to search for dark matter.
In the first part of my talk, I will discuss how one can use the JWST data to probe eV-scale QCD axion dark matter or axion-like particle dark matter. These dark matter particles can decay into two photons in the infrared band. This will produce a distinct line signature in the spectroscopic observations made by JWST. Using the latest NIRSpec IFU spectroscopic observations from JWST, we put some of the strongest bound on the photon coupling for QCD axion/ ALP DM in the mass range between 0.47 and 2.55 eV.
In the second part of my talk, I will discuss how neutrino telescopes like IceCube and Super-Kamiokande can probe dark matter - electron scattering. Dark matter (with masses greater than about 4 GeV) can get captured inside the Sun due to dark matter - electron scattering and the captured dark matter can annihilate into neutrinos and anti-neutrinos. Using up-to-date measurements by the IceCube neutrino telescope and Super-Kamiokande, we set the world's strongest limit on dark matter - electron scattering for dark matter masses between 10 GeV to about 10^5 GeV.
In this talk, I will discuss two different ways to search for dark matter.
In the first part of my talk, I will discuss how one can use the JWST data to probe eV-scale QCD axion dark matter or axion-like particle dark matter. These dark matter particles can decay into two photons in the infrared band. This will produce a distinct line signature in the spectroscopic observations made by JWST. Using the latest NIRSpec IFU spectroscopic observations from JWST, we put some of the strongest bound on the photon coupling for QCD axion/ ALP DM in the mass range between 0.47 and 2.55 eV.
In the second part of my talk, I will discuss how neutrino telescopes like IceCube and Super-Kamiokande can probe dark matter - electron scattering. Dark matter (with masses greater than about 4 GeV) can get captured inside the Sun due to dark matter - electron scattering and the captured dark matter can annihilate into neutrinos and anti-neutrinos. Using up-to-date measurements by the IceCube neutrino telescope and Super-Kamiokande, we set the world's strongest limit on dark matter - electron scattering for dark matter masses between 10 GeV to about 10^5 GeV.