C. Galelli, L. Caccianiga, A. Veutro, L. Apollonio
Interactions between secondary cosmic rays and nuclei in natural minerals can leave tracks in the lattice due to nuclear recoils. These defects can be preserved up to the Gyr timescale, making these so-called “Paleo-detectors” useful “time machines” for the study of the history of astrophysical messengers such as cosmic rays, neutrinos or even dark matter. These "Paleo-detectors" feature huge accumulated exposure times even for small masses of material, making them long-term flux integrators of all radiation along the evolution of our planet. We present the case study of the Messinian salinity crisis, a period of draining of the Mediterranean Sea which is interestingly coincident with the estimated age of the Fermi Bubbles, around 5.5 Myr ago, when our Galaxy might have been active. Greatly increased cosmic ray acceleration near the Galactic Center could have left traces in the evaporites, mainly Halite, created with the evaporation of the sea and exposed directly to secondary cosmic rays. These mineral structures were then covered during the sudden reflooding of the Mediterranean basin 5.3 Myr ago; the cosmic ray flux information remained frozen due to the shielding of the massive body of water, possibly retaining information on the flux of particles at ground in that epoch.
{"title":"Cosmic ray signatures in Paleo-detectors to investigate the past activity of our Galaxy","authors":"C. Galelli, L. Caccianiga, A. Veutro, L. Apollonio","doi":"10.22323/1.423.0145","DOIUrl":"https://doi.org/10.22323/1.423.0145","url":null,"abstract":"Interactions between secondary cosmic rays and nuclei in natural minerals can leave tracks in the lattice due to nuclear recoils. These defects can be preserved up to the Gyr timescale, making these so-called “Paleo-detectors” useful “time machines” for the study of the history of astrophysical messengers such as cosmic rays, neutrinos or even dark matter. These \"Paleo-detectors\" feature huge accumulated exposure times even for small masses of material, making them long-term flux integrators of all radiation along the evolution of our planet. We present the case study of the Messinian salinity crisis, a period of draining of the Mediterranean Sea which is interestingly coincident with the estimated age of the Fermi Bubbles, around 5.5 Myr ago, when our Galaxy might have been active. Greatly increased cosmic ray acceleration near the Galactic Center could have left traces in the evaporites, mainly Halite, created with the evaporation of the sea and exposed directly to secondary cosmic rays. These mineral structures were then covered during the sudden reflooding of the Mediterranean basin 5.3 Myr ago; the cosmic ray flux information remained frozen due to the shielding of the massive body of water, possibly retaining information on the flux of particles at ground in that epoch.","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127968328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Using the Zwicky Transient Facility (ZTF) and other observatories, we have identified three candidate Tidal Disruption Events (TDEs) in spatial and temporal coincidence with high-energy neutrinos detected by IceCube: AT2019dsg, AT2019fdr and AT2019aalc. All three of these events have been shown to be able to produce high-energy neutrinos. In these proceedings, I will give an overview of Tidal Disruption Events, outline our follow-up program with ZTF, describe the observations carried out for each of those coincident events and highlight their similarities and differences.
{"title":"Multi-messenger observations of Tidal Disruption Events","authors":"S. Reusch","doi":"10.22323/1.423.0020","DOIUrl":"https://doi.org/10.22323/1.423.0020","url":null,"abstract":"Using the Zwicky Transient Facility (ZTF) and other observatories, we have identified three candidate Tidal Disruption Events (TDEs) in spatial and temporal coincidence with high-energy neutrinos detected by IceCube: AT2019dsg, AT2019fdr and AT2019aalc. All three of these events have been shown to be able to produce high-energy neutrinos. In these proceedings, I will give an overview of Tidal Disruption Events, outline our follow-up program with ZTF, describe the observations carried out for each of those coincident events and highlight their similarities and differences.","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121253492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiplicity of TeV muons in air showers measured with IceTop and IceCube","authors":"S. Verpoest","doi":"10.22323/1.423.0074","DOIUrl":"https://doi.org/10.22323/1.423.0074","url":null,"abstract":"","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121259809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RDSim is a fast, accurate and flexible framework for the simulation of the radio emission of downgoing air showers and its detection by an arbitrary array, including showers initiated by neutrino interactions or tau-lepton decays. RDSim was build around speed and is based on simple and fast, yet still accurate, toymodel-like approaches. It models the radio emission using a superposition emission model that disentangles the Askaryan and geomagnetic components of the shower radio emission. It uses full ZHAireS simulations as an input to estimate the electric field at any position on the ground. A single input simulation can be scaled in energy and rotated in azimuth, taking into account all relevant effects. This makes it possible to simulate a huge number of geometries and energies using just a few ZHAireS input simulations. RDSim takes into account the main characteristics of the detector, such as trigger setups, thresholds and antenna patterns. To accommodate arrays that use particle detectors for triggering, such as the Auger RD extension, it also features a second toymodel to estimate the muon density at ground level and perform simple particle trigger simulations. Owing to the large statistics made possible by its speed, it can be used to investigate in detail events with a very low trigger probability and geometrical effects due to the array layout, making it specially suited to be used as a fast and accurate aperture calculator. In case more detailed studies of the radio emission and detector response are desired, RDSim can also be used to sweep the phase-space for the efficient creation of dedicated full simulation sets. This is particularly important in the case of neutrino events, that have extra variables that greatly impact shower characteristics, such as interaction or $tau$ decay depth as well as the type of interaction and it's fluctuations.
{"title":"RDSim: A fast, accurate and flexible framework for the simulation of the radio emission and detection of downgoing air showers.","authors":"W. Carvalho, A. Khakurdikar","doi":"10.22323/1.423.0079","DOIUrl":"https://doi.org/10.22323/1.423.0079","url":null,"abstract":"RDSim is a fast, accurate and flexible framework for the simulation of the radio emission of downgoing air showers and its detection by an arbitrary array, including showers initiated by neutrino interactions or tau-lepton decays. RDSim was build around speed and is based on simple and fast, yet still accurate, toymodel-like approaches. It models the radio emission using a superposition emission model that disentangles the Askaryan and geomagnetic components of the shower radio emission. It uses full ZHAireS simulations as an input to estimate the electric field at any position on the ground. A single input simulation can be scaled in energy and rotated in azimuth, taking into account all relevant effects. This makes it possible to simulate a huge number of geometries and energies using just a few ZHAireS input simulations. RDSim takes into account the main characteristics of the detector, such as trigger setups, thresholds and antenna patterns. To accommodate arrays that use particle detectors for triggering, such as the Auger RD extension, it also features a second toymodel to estimate the muon density at ground level and perform simple particle trigger simulations. Owing to the large statistics made possible by its speed, it can be used to investigate in detail events with a very low trigger probability and geometrical effects due to the array layout, making it specially suited to be used as a fast and accurate aperture calculator. In case more detailed studies of the radio emission and detector response are desired, RDSim can also be used to sweep the phase-space for the efficient creation of dedicated full simulation sets. This is particularly important in the case of neutrino events, that have extra variables that greatly impact shower characteristics, such as interaction or $tau$ decay depth as well as the type of interaction and it's fluctuations.","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"26 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124268039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Wimmer–Schweingruber, A. Kollhoff, D. Pacheco, Liu Yang, J. Rodríguez-Pacheco, R. Gómez-Herrero, G. Mason, L. Berger, P. Kühl, S. Böttcher, B. Heber, Zigong Xu, Robert Allen, À. Aran, R. Bučík, Linghua Wang, F. Espinosa Lara, I. Cernuda, M. Prieto, G. Ho, S. Eldrum, S. Fleth
{"title":"Advances in energetic particle physics with Solar Orbiter","authors":"R. Wimmer–Schweingruber, A. Kollhoff, D. Pacheco, Liu Yang, J. Rodríguez-Pacheco, R. Gómez-Herrero, G. Mason, L. Berger, P. Kühl, S. Böttcher, B. Heber, Zigong Xu, Robert Allen, À. Aran, R. Bučík, Linghua Wang, F. Espinosa Lara, I. Cernuda, M. Prieto, G. Ho, S. Eldrum, S. Fleth","doi":"10.22323/1.423.0009","DOIUrl":"https://doi.org/10.22323/1.423.0009","url":null,"abstract":"","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116780794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modelling the gamma-ray diffuse emission of the Galaxy up to PeV","authors":"D. Grasso, D. Gaggero, Pedro DeLaTorreLuque","doi":"10.22323/1.423.0103","DOIUrl":"https://doi.org/10.22323/1.423.0103","url":null,"abstract":"","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123009322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Benella, M. Stumpo, M. Laurenza, T. Alberti, G. Consolini, M. F. Marcucci
{"title":"Statistical treatment of solar energetic particle forecasting through supervised learning approaches","authors":"S. Benella, M. Stumpo, M. Laurenza, T. Alberti, G. Consolini, M. F. Marcucci","doi":"10.22323/1.423.0014","DOIUrl":"https://doi.org/10.22323/1.423.0014","url":null,"abstract":"","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123080046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Observation of multi-ten TeV to sub-PeV gamma rays from the HESS J1843-033 region with the Tibet air shower array","authors":"Sei Kato","doi":"10.22323/1.423.0113","DOIUrl":"https://doi.org/10.22323/1.423.0113","url":null,"abstract":"","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117196009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shrey Aggarwal, E. Seo, Y. Amare, D. Angelaszek, D. Bowman, Y. Chen, G. Choi, M. Copley, L. Derome, L. Eraud, C. Falana, A. Gerrety, J. Han, H. Huh, A. Haque, Y. Hwang, H. Hyun, H. Jeon, J. Jeon, S. Jeong, S.C. Kang, H. Kim, K. Kim, M. Kim, H.Y. Lee, J. Lee, M. Lee, L. Lu, J. Lundquist, L. Lutz, A. Menchaca-Rocha, O. Ofoha, H. Park, I. Park, J.M. Park, N. Picot-Clemente, R. Scrandis, J. Smith, R. Takeishi, P. Walpole, R. Weinmann, H. Wu, J. Wu, Z. Yin, Y. Yoon, H.G. Zhang
{"title":"CREAM LED Data Analysis","authors":"Shrey Aggarwal, E. Seo, Y. Amare, D. Angelaszek, D. Bowman, Y. Chen, G. Choi, M. Copley, L. Derome, L. Eraud, C. Falana, A. Gerrety, J. Han, H. Huh, A. Haque, Y. Hwang, H. Hyun, H. Jeon, J. Jeon, S. Jeong, S.C. Kang, H. Kim, K. Kim, M. Kim, H.Y. Lee, J. Lee, M. Lee, L. Lu, J. Lundquist, L. Lutz, A. Menchaca-Rocha, O. Ofoha, H. Park, I. Park, J.M. Park, N. Picot-Clemente, R. Scrandis, J. Smith, R. Takeishi, P. Walpole, R. Weinmann, H. Wu, J. Wu, Z. Yin, Y. Yoon, H.G. Zhang","doi":"10.22323/1.423.0157","DOIUrl":"https://doi.org/10.22323/1.423.0157","url":null,"abstract":"","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132195157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The toe of the spectrum of ultra-high energy cosmic rays (UHECRs), above ≈ 50 EeV, is an extremely interesting region for studying the origins of CRs. The potentially small magnetic deflections at these energies are coupled with the presence of the flux suppression, which could be a signature of the maximum acceleration potential of the sources, or could find its explanation in the interactions of cosmic rays with background photons, effectively limiting the region of interest in the search for UHECR sources to a relatively small bubble around us. In this talk we present the latest anisotropy searches carried out by the Pierre Auger Collaboration in the energy range above 32 EeV. The dataset used is that collected in the phase one of the Observatory between 2004 and 2020, before the AugerPrime upgrade, for a cumulative exposure of 120000 km 2 sr yr. We have conducted both blind, model-independent searches for overdensities, correlation analyses with astrophysical structures, and cross-correlation studies with catalogs of candidate sources. We have found evidence for a deviation from isotropy at an angular scale of 25 degrees at the 4 𝜎 level for UHECRs with energy above 38 EeV.
{"title":"Search for anisotropies in the arrival directions of cosmic rays above 32 EeV from Phase One of the Pierre Auger Observatory","authors":"C. Galelli","doi":"10.22323/1.423.0017","DOIUrl":"https://doi.org/10.22323/1.423.0017","url":null,"abstract":"The toe of the spectrum of ultra-high energy cosmic rays (UHECRs), above ≈ 50 EeV, is an extremely interesting region for studying the origins of CRs. The potentially small magnetic deflections at these energies are coupled with the presence of the flux suppression, which could be a signature of the maximum acceleration potential of the sources, or could find its explanation in the interactions of cosmic rays with background photons, effectively limiting the region of interest in the search for UHECR sources to a relatively small bubble around us. In this talk we present the latest anisotropy searches carried out by the Pierre Auger Collaboration in the energy range above 32 EeV. The dataset used is that collected in the phase one of the Observatory between 2004 and 2020, before the AugerPrime upgrade, for a cumulative exposure of 120000 km 2 sr yr. We have conducted both blind, model-independent searches for overdensities, correlation analyses with astrophysical structures, and cross-correlation studies with catalogs of candidate sources. We have found evidence for a deviation from isotropy at an angular scale of 25 degrees at the 4 𝜎 level for UHECRs with energy above 38 EeV.","PeriodicalId":375543,"journal":{"name":"Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125095541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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