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
14 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…
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…
Massive Star Clusters as sources of high-energy gamma radiation
Luana N. Padilha, Rita C. Anjos
This paper investigates the contribution of massive star clusters (MSC) as sources of high-energy gamma rays and their impact on the ultra-high-energy (UHE) emission observed throu…
UHECRs Propagation and their Multimessengers: Upper limits and the Impact of the Extragalactic Magnetic Field
Rodrigo Sasse, Rubens Costa, Adriel G. B Mocellin +2
The detection of high-energy astrophysical multimessengers establishes a connection between ultra-high-energy cosmic rays (UHECRs) and powerful cosmic accelerators. Interactions of…
Blazars Jets and prospects for TeV-PeV neutrinos & gamma-rays through cosmic-ray interactions
Rodrigo Sasse, Rubens Jr. Costa, Luiz A. Stuani Pereira +1
This study explores the origins of cosmic rays and their secondary messengers, focusing on the potential role of four BL Lacs W Comae, 1ES 1959+650, PKS 2005-489, and PKS 2155-304…
A gamma-ray study of galactic PeVatron candidates LHAASO J1825-1326 and LHAASO J1839-0545
Rubens Jr. Costa, Débora B. Götz, Rita C. Anjos +2
Recent studies by LHAASO have shown the presence of high-luminosity PeVatrons in our Galaxy. We examine two notable sources, each consisting of two pulsars, detected by LHAASO. We…
Probing Low-Luminosity Gamma-Ray Emission from SNR G296.5+10.0 and CCO 1E 1207.4-5209 with CTAO
Luana N. Padilha, Rubens Jr. Costa, Rita C. dos Anjos +1
The acceleration mechanisms of cosmic rays (CR) in supernova remnants (SNRs) and their associated compact central objects (CCOs) remain an open question in high-energy astrophysics…
An updated view and perspectives on high-energy gamma-ray emission from SGR J1935+2154 and its environment
Jaziel G. Coelho, Luana N. Padilha, Rita C. dos Anjos +2
SGR J1935+2154 was discovered in 2016 and is currently one of the most burst-active Soft Gamma-ray Repeaters (SGR), having emitted several X-ray bursts in recent years. In one of o…
High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154
Rita C. dos Anjos, Jaziel G. Coelho, Jonas P. Pereira +1
In recent years some efforts have been made to identify active sources capable of accelerating particles up to eV, known as PeVatrons. Measurements of TeV ( eV)…