186 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal do ParanáBR20 papers
- Universidade Tecnológica Federal do ParanáBR15 papers
- Universidade Federal do Espírito SantoBR13 papers
- Universidade Estadual de LondrinaBR12 papers
- Instituto Nacional de Pesquisas EspaciaisBR7 papers
- Universidade de São PauloBR7 papers
- Shahid Beheshti UniversityIR6 papers
- Universidade de BrasíliaBR6 papers
- Universidade Federal do Rio Grande do SulBR5 papers
- Universitat de BarcelonaES5 papers
- Fundação Parque Tecnológico ItaipuBR4 papers
- Universidade Federal de Campina GrandeBR4 papers
12 papers · 1 filter
Probing Lorentz Invariance Violation in Cosmogenic Neutrino Propagation with KM3-230213A
Rodrigo Sasse, Rodrigo Guedes Lang, Rita de Cássia dos Anjos
We investigate superluminal Lorentz invariance violation (LIV) in the neutrino sector using cosmogenic neutrino fluxes generated with ultrahigh-energy cosmic-ray propagation models…
Hadronic origin of gamma rays and neutrinos from blazars: Multi-messenger implications and observational constraints
Rodrigo Sasse, Rita de Cássia dos Anjos
We investigate whether cosmogenic gamma rays and neutrinos from ultra-high-energy cosmic rays (UHECRs) produced in hadronically active blazars can significantly contribute to the o…
Non-thermal emission from the vicinity of the magnetar CXOU J171405.7-381031
Manoel F. Sousa, Rita. C. Anjos
Magnetars are neutron stars with ultra-strong magnetic fields (- G) and are promising candidates for high-energy particle acceleration. We present a multiw…
Multiwavelength study of non-thermal emission in the Swift J1834.9-0846/W41 region
Manoel F. Sousa, Rita C. Dos Anjos, Vitor de Souza
We investigate the origin of non-thermal emission from the Swift J1834-0846/W41 region by modeling its broadband spectral energy distribution from radio to TeV energies within lept…
Generalized Fourier's law in mesoscopic systems
Luciano C. Lapas
Fourier's law fails when the mean free path of the energy carriers becomes comparable to the length and time scales over which the temperature field varies. We derive a thermodynam…
Tuning ergodicity breaking: Anomalous diffusion under asymptotic power-law forcing
Raul V. B. Morás, M. Florencia Carusela, Luciano C. Lapas
In non-Markovian systems, distinct dynamical phases arise from the competition between internal memory and external forcing, encompassing thermalization, persistent ergodicity brea…
High-Synchrotron-Peaked BL Lacs as Multi-Messenger Sources: Connecting Ultra-High-Energy Cosmic Rays and Neutrinos
Luiz Augusto Stuani Pereira, Rita C. Anjos
High-synchrotron-peaked (HSP) BL Lac objects are extreme particle accelerators whose synchrotron emission peaks at high frequencies, typically in the UV-to-X-ray band ($ν_{\rm peak…
Oblique Shocks at Supernova Remnants in Massive Star Clusters: A Model for the Cosmic-Ray Knee Observed by LHAASO
Luana N. Padilha, Rita C. Anjos
This work establishes oblique shocks in Massive Star Clusters (MSC) as a primary mechanism for accelerating cosmic rays (CR) up to the knee of the energy spectrum. We develop a mod…
Energy Deposition by Galactic Cosmic Rays and Implications for Ozone Chemistry
Luiz Augusto Stuani Pereira, Rita C. Anjos
We present a Monte Carlo study of galactic cosmic-ray (GCR) energy deposition and its implications for stratospheric chemistry, performed with the Geant4 toolkit. Primary nuclei (p…
Statistical consistency of sign-switching vacuum energy with cosmological observations
Sehjal Khandelwal, Abraão J. S. Capistrano, Suresh Kumar
We assess dataset agreement and late-time predictive adequacy in CDM and its sign-switching extension, CDM, using a suite of Gaussian and exact non-Gaussian consisten…
Probing dynamical dark energy with late-time data: Evidence, tensions, and the limits of the CDM framework
Tengpeng Xu, Suresh Kumar, Yun Chen +2
We test the dynamical dark-energy CDM (CPL) framework against CDM using CMB anisotropies and lensing together with DESI DR2, SDSS-IV, transverse/angular BAO (BAOtr), and…
Probing dynamical embeddings in a five-dimensional spacetime in light of DESI BAO
Abraão J. S. Capistrano, Emanuelly Silva, Rafael C. Nunes +1
We here investigate the observational viability of Nash gravity as an alternative to the standard CDM cosmology. Based on Nash's embedding theorem, the model introduces orthogon…