Conveners
Parallel Session - Indirect Detection / Astro
- Juande Zornoza (IFIC (Univ. de Valencia - CSIC))
Parallel Session - Indirect Detection / Astro
- Miguel A. Sanchez Conde (Universidad Autónoma de Madrid (UAM) & Instituto de Física Teórica (IFT UAM-CSIC))
Parallel Session - Indirect Detection / Astro
- Pedro De la Torre Luque
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Jorge Terol Calvo (INFN Torino)01/06/2026, 11:30Indirect detectionOral presentation
The IceCube and ANTARES collaborations recently reported measurements of high-energy neutrinos from the galactic plane and galactic ridge. If cosmic rays scatter off dark matter particles at the galactic halo efficiently, a sizable high-energy neutrino flux may be produced. If we consider the deep inelastic scattering of cosmic rays with dark matter particles at the galactic ridge, we can...
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Kaliroe Pappas (Columbia University)01/06/2026, 11:50Indirect detectionOral presentation
The nature of dark matter is one of the great open questions in physics. The General Antiparticle Spectrometer (GAPS) experiment is an Antarctic balloon mission optimized specifically for low energy (< 0.25 GeV/n) cosmic antinuclei as uniquely low-background signatures of dark matter. The secondary production of low-energy astrophysical antideuterons is strongly suppressed by the scarcity of...
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Adriana Bariego Quintana (KM3NeT IFIC (CSIC-UV))01/06/2026, 12:10Indirect detectionOral presentation
The method of indirect detection of Dark Matter (DM) in neutrino telescopes involves the observation of a Cherenkov light pattern produced by particles crossing the detector that originate from DM annihilation or decay. A signal of neutrinos produced by these processes is searched for in astrophysical targets such as the Galactic Centre or the Sun, where large amounts of DM are believed to...
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Jaume Zuriaga-Puig (IFT UAM-CSIC)01/06/2026, 12:30Indirect detectionOral presentation
Due to its proximity and high dark matter (DM) content, the Galactic Center (GC) is one of the preferred targets in the search for WIMP DM. Even in the absence of clear signals, GC observations can be used to set the best DM constraints. Despite the GC being a crowded region, rich in very diverse gamma-ray astrophysical emissions, thanks to both its expected flux and angular sensitivity, the...
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Dr Alfonso Garcia-Soto (IFIC)01/06/2026, 12:50Indirect detectionOral presentation
The recently reported KM3-230213A neutrino event, observed with the KM3NeT/ARCA detector, represents the most energetic neutrino observed to date. It has stimulated significant interest in possible explanations of its origin, including those beyond conventional astrophysical scenarios. In this contribution, we investigate whether the event could originate from the decay of a heavy dark matter...
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Francesca Lecce01/06/2026, 13:10Astrophysical observationsOral presentation
Axion-like particles (ALPs) coupled to nucleons can be efficiently produced in core-collapse supernovae (SNe) and then, if they couple to photons, convert into gamma rays in cosmic magnetic fields, generating short gamma-ray bursts. Though ALPs from a Galactic SN would induce an intense and easily detectable gamma-ray signal, such events are exceedingly rare. In contrast, a few SNe per year...
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Antonio Circiello (Clemson University)01/06/2026, 15:00Indirect detectionOral presentation
Dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are targets of great interest for searches of Dark Matter (DM) signatures with the Fermi-LAT. In the last decade the number of detected and putative dSphs has been rapidly increasing, allowing for some of the most stringent constraints to be put on models of annihilating DM in the GeV-TeV range. The most recent results even highlight...
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Shyam Balaji (King's College London)01/06/2026, 15:20Indirect detectionOral presentation
In this talk, I will present recent work using MeV Galactic observations to search for dark matter. I will discuss how the long standing 511 keV gamma-ray line, recent 2 MeV in-flight annihilation excess, and anomalous Central Molecular Zone (CMZ) ionisation can be addressed within one model paradigm, "Excited Dark Matter". A brief overview for future experimental prospects will also be covered.
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Javier Rico (IFAE-BIST)01/06/2026, 15:40Indirect detectionOral presentation
Weakly interacting massive particles (WIMPs) remain a central benchmark for particle dark matter, with gamma-ray observations providing one of the most powerful probes of annihilation signals across a wide mass range. Milky Way dwarf spheroidal galaxies (dSphs) constitute particularly robust targets due to their high dark matter content and low astrophysical foregrounds, enabling sensitive...
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Cristina Fernandez Suarez (Universidad Autónoma de Madrid (UAM) & Instituto de Física Teórica (IFT UAM-CSIC))01/06/2026, 16:00Indirect detectionOral presentation
In this talk, we summarize our research on stellar streams as a new and complementary target for dark matter (DM) searches with gamma rays.
Stellar streams whose progenitor is a dwarf galaxy (dG) are particularly interesting targets for DM searches, since dGs are thought to be highly DM-dominated systems. We expect these streams to have lost most of their DM content during the stretching...
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Júlia Mamprim (Universidade de São Paulo)01/06/2026, 16:20Indirect detectionOral presentation
The dark photon is a new hypothetical gauge boson arising in extensions of the Standard Model, and constitutes a compelling dark matter candidate. As dark photon dark matter (DPDM), it can interact with electromagnetic fields via kinetic mixing, and the inelastic scattering process γγ′ → e+e⁻ becomes kinematically allowed for gamma rays above a characteristic energy threshold. This interaction...
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Giovanni Volta (Max-Planck-Institut für Kernphysik)02/06/2026, 11:30Astrophysical observationsOral presentation
At IDM 2024, the XENON collaboration reported the first indication of nuclear recoils from solar $^{8}$B neutrinos via coherent elastic neutrino-nucleus scattering (CE$\nu$NS) in the XENONnT detector, utilizing a total exposure of 3.51 t$\times$yr from the first two science runs. In this talk, I will present the results of a blind search for CE$\nu$NS using the third science run, which...
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Debajit Bose (Indian Institute of Science (IISc), Bengaluru, India)02/06/2026, 11:50Astrophysical observationsOral presentation
The presence of supermassive black holes (SMBHs) at high redshifts (z>5), as revealed by James Webb Space Telescope (JWST), challenges standard black hole (BH) formation scenarios. We propose a mechanism in which non-annihilating dark matter (DM) with non-gravitational interactions with the Standard Model (SM) particles accumulates inside Population III (Pop III) stars, inducing their...
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Yaiza Cano (Universidad de Alcalá de Henares)02/06/2026, 12:10Astrophysical observationsOral presentation
In this paper, we consider three compact objects (HESS J1731-347, PSR-J1231, XTE J1814-338) with anomalous mass-radius relation to analyze the possibility of being dark matter admixed neutron stars. We try to infer the dark matter particle properties, under the assumption of behaving as a free Fermi gas. The main novelty relies on the use of a baryonic equation of state obtained from first...
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Jordan Koechler (INFN Turin)02/06/2026, 12:30Indirect detectionOral presentation
Cosmic-ray antinuclei, in particular antideuterons ($\overline{\rm D}$) and antihelion-3 (${}^3\overline{\rm He}$), are among the most promising messengers for indirect dark matter (DM) searches. Their interest arises from the strong suppression of secondary production in cosmic-ray interactions with the interstellar medium at kinetic energies $K\sim 0.1–1$ GeV/n, where the expected...
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Francesca Scarcella (Instituto de Fisica de Cantabria)02/06/2026, 12:50Oral presentation
Dark matter can form very steep density enhancements, or spikes, around black holes. Recent work has proposed that unusually rapid orbital‑period decay observed in two nearby black‑hole X‑ray binaries could be caused by such spikes. If confirmed in systems where current formation models do not predict them, this would imply far more widespread, dense dark‑matter structures than expected. We...
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Francesca Scarcella (Instituto de Fisica de Cantabria)Astrophysical observationsOral presentation
Dark matter can form very steep density enhancements, or spikes, around black holes. Recent work has proposed that unusually rapid orbital‑period decay observed in two nearby black‑hole X‑ray binaries could be caused by such spikes. If confirmed in systems where current formation models do not predict them, this would imply far more widespread, dense dark‑matter structures than expected. We...
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