{"total":15,"items":[{"citing_arxiv_id":"2606.31629","ref_index":29,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Ultralight dark matter mixed with primordial black holes","primary_cat":"astro-ph.CO","submitted_at":"2026-06-30T13:13:03+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"In mixed ULDM-PBH halos the continuum PBH contribution alters soliton structure at the tens-of-percent level while discrete shot noise induces mode transitions too slow to matter on galactic timescales.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.27903","ref_index":58,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"A hidden reionization prior biases cosmological inference","primary_cat":"astro-ph.CO","submitted_at":"2026-06-26T09:53:37+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"No monotonic reionization history fits Planck τ, patchy kSZ from SPT/ACT, and Lyα endpoint; an early ionization phase at z≳12 relaxes ∑mν<0.39 eV and shifts σ8 via As-τ degeneracy.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.07505","ref_index":219,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Primordial Black Hole Triggered Type Ia Supernovae II: Comparison with Supernova Remnants and Galactic Chemical Evolution","primary_cat":"astro-ph.HE","submitted_at":"2026-06-05T17:56:37+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"PBH-triggered SN Ia models across metallicities match some observed light curves and remnants, constrain the explosion channel fraction via chemical evolution modeling, and indicate PBHs as a potentially major early-universe SN Ia source.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.19825","ref_index":34,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Inflaton Accretion onto Primordial Black Holes During Reheating","primary_cat":"astro-ph.CO","submitted_at":"2026-05-19T13:18:35+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Inflaton accretion during reheating drives non-linear PBH mass growth that extends lifetimes and amplifies emitted SGWB by multiple orders of magnitude.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.15197","ref_index":212,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Primordial Black Hole from Tensor-induced Density Fluctuation: First-order Phase Transitions and Domain Walls","primary_cat":"astro-ph.CO","submitted_at":"2026-05-14T17:59:55+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Tensor perturbations from first-order phase transitions and domain wall annihilation induce curvature fluctuations at second order that form primordial black holes, allowing asteroid-mass PBHs to comprise all dark matter for specific parameter ranges with associated gravitational wave peaks in LISA,","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"D95, 043534 (2017), arXiv:1612.05644 [astro-ph.CO]. [209] V. Poulin, P. D. Serpico, F. Calore, S. Clesse, and K. Kohri, Phys. Rev. D96, 083524 (2017), arXiv:1707.04206 [astro- ph.CO]. [210] V. De Luca, G. Franciolini, P. Pani, and A. Riotto, JCAP06, 044 (2020), arXiv:2005.05641 [astro-ph.CO]. [211] C. Alcock et al. (MACHO), Astrophys. J.542, 281 (2000), arXiv:astro-ph/0001272. [212] V. Poulin, J. Lesgourgues, and P. D. Serpico, JCAP03, 043 (2017), arXiv:1610.10051 [astro-ph.CO]. [213] P. St¨ ocker, M. Kr¨ amer, J. Lesgourgues, and V. Poulin, JCAP03, 018 (2018), arXiv:1801.01871 [astro-ph.CO]. [214] H. Poulter, Y. Ali-Ha¨ ımoud, J. Hamann, M. White, and A. G. Williams, (2019), arXiv:1907.06485 [astro-ph.CO]. [215] Z. Arzoumanian et al."},{"citing_arxiv_id":"2604.20063","ref_index":67,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Purely Quadratic Non-Gaussianity from Tachyonic Instability: Primordial Black Holes and Scalar-Induced Gravitational Waves","primary_cat":"astro-ph.CO","submitted_at":"2026-04-21T23:58:51+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Purely quadratic non-Gaussianity from tachyonic instability allows narrow curvature spectra to exponentially suppress primordial black hole overproduction via correlation coefficient ρ approaching -1 while retaining sizable scalar-induced gravitational waves.","context_count":1,"top_context_role":"background","top_context_polarity":"support","context_text":"Monroy-Rodr' ıguez and C. Allen, The end of the MACHO era- revisited: new limits on MACHO masses from halo wide binaries, Astrophys. J.790, 159 (2014), arXiv:1406.5169 [astro-ph.GA]. [66] T. D. Brandt, Constraints on MACHO Dark Matter from Compact Stellar Systems in Ultra-Faint Dwarf Galaxies, Astrophys. J. Lett.824, L31 (2016), arXiv:1605.03665 [astro-ph.GA]. [67] Y. Ali-Ha¨ ımoud and M. Kamionkowski, Cosmic microwave background limits on accreting primordial black holes, Phys. Rev. D95, 043534 (2017), arXiv:1612.05644 [astro-ph.CO]. [68] V. Poulin, P. D. Serpico, F. Calore, S. Clesse, and K. Kohri, CMB bounds on disk-accreting massive primordial black holes, Phys. Rev. D96, 083524 (2017), arXiv:1707.04206 [astro-ph."},{"citing_arxiv_id":"2604.18007","ref_index":18,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"In-depth analysis of the clustering of dark matter particles around primordial black holes. Part III: CMB constraints","primary_cat":"astro-ph.CO","submitted_at":"2026-04-20T09:30:49+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"CMB data limits the s-wave annihilation cross section of thermal dark matter particles to ≲ 10^{-30} cm³/s scaled by PBH fraction and mass for PBHs heavier than ~10^{-10} solar masses.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"[16] M. Ricotti, J. P. Ostriker and K. J. Mack,Effect of primordial black holes on the cosmic microwave background and cosmological parameter estimates,ApJ680(June, 2008) 829-845, [0709.0524]. [17] Y. Ali-Ha¨ ımoud and M. Kamionkowski,Cosmic microwave background limits on accreting primordial black holes,Phys. Rev. D95(Feb., 2017) 043534, [1612.05644]. [18] V. Poulin, P. D. Serpico, F. Calore, S. Clesse and K. Kohri,Cmb bounds on disk-accreting massive primordial black holes,Phys. Rev. D96(Oct., 2017) 083524, [1707.04206]. [19] G. Ballesteros and M. Taoso,Primordial black hole dark matter from single field inflation, Phys. Rev. D97(Jan., 2018) 023501, [1709.05565]. [20] V. De Luca, G. Franciolini and A."},{"citing_arxiv_id":"2604.17083","ref_index":59,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Dark ages bounds on non-accreting massive compact halo objects","primary_cat":"astro-ph.CO","submitted_at":"2026-04-18T17:42:06+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Upper bounds on the dark matter fraction in MACHOs of 10^3 to 10^7 solar masses are derived from limits on distortions to the global 21-cm signal at z~17, z~89, and z>300.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"framework, the differential brightness temperature is ex- pected to show two distinct absorption troughs: one dur- ing the dark ages (z∼89), and the other during the cosmic dawn (z∼17) [54-57]. The EDGES experiment has reported a tentative absorption feature centred at z∼17.2 with an amplitude of−0.5 +0.3 −0.5 K [58], although the SARAS 3 experiment has rejected the EDGES sig- nal at 95% CL [59], and the tension remains unresolved. Future experiments such as REACH [60], FARSIDE [61], SEAMS [62], PRATUSH [63], and LuSee-Night [64], are expected to shed light on this discrepancy. Unlike the cosmic dawn signal, which is sensitive to uncertain astro- physical processes such as star formation efficiency, X-ray heating, and Lyman-αemissivity, the dark ages signal at"},{"citing_arxiv_id":"2604.14871","ref_index":62,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Microscopic primordial black holes as macroscopic dark matter from large extra dimensions","primary_cat":"astro-ph.CO","submitted_at":"2026-04-16T11:01:51+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"In the ADD extra-dimension model, microscopic primordial black holes undergo runaway accretion and grow to macroscopic scales, allowing them to comprise all dark matter with initial abundances as low as 10^{-44}.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"of their phenomenology to beyond SM particle content and modified evaporation channels [48-50]. In parallel, gravitational wave observations have emerged as a pow- erful and complementary probe of PBHs through their merger rates and mass distributions [51-61]. A key limitation of the standard picture is that accre- tion of radiation in the early Universe is typically inef- ficient [62, 63]. The combination of relativistic pressure and rapid cosmic expansion prevents the formation of a sustained inflow, so that PBHs evolve approximately as isolated objects with nearly constant mass until evapora- tion becomes important [22, 64-66]. Consequently, sig- nificant mass growth from microscopic initial seeds is not expected in conventional cosmology."},{"citing_arxiv_id":"2604.06858","ref_index":38,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Memory-Burden Suppression of Hawking Radiation and Neutrino Constraints on Primordial Black Holes","primary_cat":"hep-ph","submitted_at":"2026-04-08T09:20:45+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Memory-burden backreaction deforms the Hawking spectrum to suppress its high-energy tail, lowering total luminosity and neutrino flux by a factor set by a single suppression parameter and thereby relaxing IceCube bounds on primordial black hole dark matter.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"The possibility that PBHs constitute some or all of the cosmological dark matter has attracted considerable inter- est [17-19, 23-27]. Observational constraints on the PBH dark matter fractionf PBH span many decades in mass and arise from a diverse set of probes, including gravitational lensing [28-32], dynamical effects on stellar systems [33-35], accretion signatures [36-39], gravitational wave observations [40-43], and the cosmic microwave background [38, 44- 46]. A defining feature of PBHs sufficiently light to evaporate within the age of the Universe is their emission of Hawking radiation, a quasi-thermal flux of particles produced by quantum effects in the curved spacetime near the black hole horizon [47, 48]. The detailed properties of this emission, including the energy spectrum, greybody factors, and particle"},{"citing_arxiv_id":"2604.01407","ref_index":22,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"High-frequency gravitational wave transients from superradiance","primary_cat":"gr-qc","submitted_at":"2026-04-01T21:14:58+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Ultralight boson clouds around primordial black holes emit high-frequency gravitational wave transients via superradiance and binary-driven transitions, but the signals fall below current detector sensitivity at plausible distances.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"spin measurements of a population of binary black hole mergers,Phys. Rev. D103(2021) 063010 [1908.02312]. [20] B. Carr, F. Kühnel and M. Sandstad,Primordial black holes as dark matter,Phys. Rev. D94 (2016) 083504 [1607.06077]. [21] M. Raidal, V. Vaskonen and H. Veermäe,Gravitational waves from primordial black hole mergers,JCAP09(2017) 037 [1707.01480]. [22] Y. Ali-Haïmoud and M. Kamionkowski,Cosmic microwave background limits on accreting primordial black holes,Phys. Rev. D95(2017) 043534 [1612.05644]. [23] H. Yoshino and H. Kodama,Gravitational radiation from an axion cloud around a black hole: Superradiant phase,Prog. Theor. Exp. Phys.(2014) 043E02 [1312.2326]. [24] H. Yoshino and H. Kodama,The bosenova and axiverse,Class."},{"citing_arxiv_id":"2603.18884","ref_index":12,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Primordial black holes and the velocity acoustic oscillations features in 21 cm signals from the cosmic Dark Ages","primary_cat":"astro-ph.CO","submitted_at":"2026-03-19T13:25:27+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Primordial black holes generate up to 30% amplitude VAO wiggles in 21 cm signals from the Dark Ages at redshifts 20-40 even at dark matter fractions as low as 10^-13.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2508.09965","ref_index":65,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"GW231123: A Possible Primordial Black Hole Origin","primary_cat":"astro-ph.CO","submitted_at":"2025-08-13T17:32:14+00:00","verdict":"CONDITIONAL","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"GW231123's masses and high spins are consistent with primordial black holes that accreted mass and angular momentum in the early universe within the standard PBH framework.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"[63] S. P. Oh and Z. Haiman, Fossil HII regions: Self-limiting star formation at high redshift, Mon. Not. Roy. Astron. Soc. 346, 456 (2003), arXiv:astro-ph/0307135 [astro-ph]. [64] Y. Ali-Haïmoud and M. Kamionkowski, Cosmic mi- crowave background limits on accreting primordial black holes, Phys. Rev. D95, 043534 (2017), arXiv:1612.05644 [astro-ph.CO]. [65] G. Facchinetti, M. Lucca, and S. Clesse, Relaxing CMB bounds on primordial black holes: The role of ionization fronts, Phys. Rev. D 107, 043537 (2023), arXiv:2212.07969 [astro-ph.CO]. [66] V. Bosch-Ramon and N. Bellomo, Mechanical feedback effects on primordial black hole accretion, Astron. Astro- phys. 638, A132 (2020), arXiv:2004.11224 [astro-ph."},{"citing_arxiv_id":"2006.02838","ref_index":203,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Primordial Black Holes as Dark Matter: Recent Developments","primary_cat":"astro-ph.CO","submitted_at":"2020-06-03T17:57:28+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"Primordial black holes in specific mass ranges could account for some or all dark matter while resolving structure-formation and seed problems in standard cosmology.","context_count":1,"top_context_role":"background","top_context_polarity":"support","context_text":"Ali-Ha¨ ımoud and Kamionkowski [202] calculate the accretion on the assumption that it is suppressed by Compton drag and Compton cooling from CMB photons and allowing for the PBH velocity relative to the background gas. They find the spectral distortions are too small to be detected, while the anisotropy constraints only exclude f = 1 above 10 2 M⊙. Horowitz [203] performs a similar analysis and gets an upper limit of 30 M⊙. Neither of these analyses includes the super-Eddington effects expected above some mass, and this should lead to a flattening of the constraint. Poulin et al. [204, 205] argue that the spherical accretion approximation probably breaks down, with an accretion disk forming instead, and this affects the statistical properties of the CMB anisotropies."},{"citing_arxiv_id":"1907.06485","ref_index":10,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"CMB constraints on ultra-light primordial black holes with extended mass distributions","primary_cat":"astro-ph.CO","submitted_at":"2019-07-15T13:12:03+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"For ultra-light PBHs with extended mass distributions, new CMB-derived 95% exclusion bounds on f_PBH are obtained by jointly varying ΛCDM parameters, yielding f_PBH < 1.6 × 10^{-5} for a uniform distribution between 10^{15} and 10^{17} g.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null}],"limit":50,"offset":0}