14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Rafael C. Nunes2 profiles59 · h 38
- E. Granato55 · h 14
- C. Wuensche44 · h 18
- J. D. de Araújo2 profiles36 · h 3
- C. Rodrigues31 · h 14
- T. Villela2 profiles31 · h 16
- O. D. Miranda30 · h 15
- A. Bernui29 · h 25
- F. Jablonski2 profiles26 · h 17
- O. Aguiar2 profiles25 · h 82
- H. Capelato23 · h 18
- R. D. de Carvalho23 · h 0
- Centre National de la Recherche ScientifiqueFR237 papers
- California Institute of TechnologyUS203 papers
- University of CambridgeGB195 papers
- Goddard Space Flight CenterUS194 papers
- Massachusetts Institute of TechnologyUS190 papers
- University of SheffieldGB190 papers
- University of MichiganUS175 papers
- University of WarsawPL175 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT174 papers
- Stanford UniversityUS174 papers
- University of BirminghamGB174 papers
- University of GlasgowGB174 papers
93 papers · 1 filter
Constraining the white-dwarf mass in the intermediate polar IGR J17014-4306 using X-ray and optical spectroscopy
D. C. Souza, M. P. Diaz, A. S. Oliveira +7
Intermediate polars (IPs), a subclass of magnetic cataclysmic variables, often show discrepancies between white-dwarf (WD) mass measurements from X-ray spectral modeling and optica…
A micronova burst in the intermediate polar IGR J17014-4306
Alexandre S. Oliveira, D. C. Souza, G. J. M. Luna +1
We report the detection of a short optical burst in TESS data of IGR J17014-4306, the eclipsing intermediate polar with the longest known orbital period. The burst lasts 1.56 d and…
The mass of the neutron star in 4U 1820-30 revisited
Marcio G B de Avellar, Jorge E Horvath, Nathalia D Pires +7
We revisit the mass of the neutron star in the ultracompact binary 4U 1820--30 in light of a recently reported transient absorption feature at about 3.8 keV, interpreted as a gravi…
Correlating Particle Acceleration Rates with Plasma Conditions in Colliding Wind Binaries
Gislaine B Cordeiro, Diego Falceta-Gonçalves, Grzegorz Kowal +1
Recent observations have revealed star-forming regions as possible origin sites of very-high-energy (TeV) cosmic rays, not associated with supernova remnants. Colliding-wind binari…
Effects of light-mass fermionic dark matter on the equilibrium and stability of white dwarfs
G. A. Carvalho, J. D. V. Arbañil, J. G. Coelho
White dwarfs (WDs) can be used as laboratories to test strong gravity and high-density regimes, once their equation of state is not so uncertain as the one of neutron stars. This m…
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…
Revisiting multiwavelength data on the supersoft X-ray source CAL 83
Paulo E. Stecchini, Marcos P. Diaz, Flavio D'Amico +1
In this study we revisit public data on the supersoft X-ray source CAL 83 in the Large Magellanic Cloud. A significant part of our analysis is focused on XMM-Newton X-ray observati…
Large amplitude bidirectional anisotropy of cosmic-ray intensity observed with world-wide networks of ground-based neutron monitors and muon detectors in November, 2021
K. Munakata, M. Kozai, C. Kato +24
We analyze the cosmic-ray variations during a significant Forbush decrease observed with world-wide networks of ground-based neutron monitors and muon detectors during November 3-5…
Model-based cross-correlation search for gravitational waves from the low-mass X-ray binary Scorpius X-1 in LIGO O3 data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1692
We present the results of a model-based search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1 using LIGO detector data from the third observing run…
Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO--Virgo data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1667
We present a directed search for continuous gravitational wave (CW) signals emitted by spinning neutron stars located in the inner parsecs of the Galactic Center (GC). Compelling e…
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…
Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift During the LIGO-Virgo Run O3b
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1632
We search for gravitational-wave signals associated with gamma-ray bursts detected by the Fermi and Swift satellites during the second half of the third observing run of Advanced L…
All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1669
This paper describes the first all-sky search for long-duration, quasi-monochromatic gravitational-wave signals emitted by ultralight scalar boson clouds around spinning black hole…
Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1694
We present a targeted search for continuous gravitational waves (GWs) from 236 pulsars using data from the third observing run of LIGO and Virgo (O3) combined with data from the se…
Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1634
Results are presented of searches for continuous gravitational waves from 20 accreting millisecond X-ray pulsars with accurately measured spin frequencies and orbital parameters, u…
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)…
Search for intermediate mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration
Intermediate-mass black holes (IMBHs) span the approximate mass range --, between black holes (BHs) formed by stellar collapse and the supermassive BHs at the c…
Observational Constraints on the Pulsar Wind Model: The Cases of Crab and Vela
Jaziel G. Coelho, José C. N. de Araujo, Samantha M. Ladislau +1
As is well known, pulsars are extremely stable rotators. However, although slowly, they spin down thanks to brake mechanisms, which are in fact still subject of intense investigati…
Diving below the spin-down limit: Constraints on gravitational waves from the energetic young pulsar PSR J0537-6910
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1589
We present a search for continuous gravitational-wave signals from the young, energetic X-ray pulsar PSR J0537-6910 using data from the second and third observing runs of LIGO and…
On the behavior of the black hole candidate 1E 1740.7-2942's corona based on long-term INTEGRAL database
Paulo Eduardo Stecchini, Jurandi Leão, Manuel Castro +1
One of the most straightforward ways to explain the hard X-ray spectra observed in X-ray binaries is to assume that comptonization of soft photons from the accretion disk is occurr…
Study of Blazar activity in 10 year Fermi-LAT data and implications for TeV neutrino expectations
J. R. Sacahui, A. V. Penacchioni, A. Marinelli +4
Blazars are the most active extragalactic gamma-ray sources. They show sporadic bursts of activity, lasting from hours to months. In this work we present a 10-year analysis of a sa…
Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift During the LIGO-Virgo Run O3a
The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1250
We search for gravitational-wave transients associated with gamma-ray bursts detected by the Fermi and Swift satellites during the first part of the third observing run of Advanced…
Magnetohydrodynamic waves excited by a coupling between gravitational waves and a strongly magnetized plasma in binaries of neutron stars
Adam S. Gontijo, Oswaldo D. Miranda
Coalescence of binary neutron stars (BNSs) is one of the sources of gravitational waves (GWs) able to be detected by ground-based interferometric detectors. The event GW170817 was…
Weighing massive neutron star with screening gravity: A look on PSR J0740+6620 and GW190814 secondary component
Rafael C. Nunes, Jaziel G. Coelho, José C. N. de Araujo
Neutron stars (NSs) are excellent natural laboratories to constrain gravity on strong field regime and nuclear matter in extreme conditions. Motivated by the recent discovery of a…