38 citations · 368 across the 34 of their papers we have counts for
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The double white dwarf merger progenitors of SDSS J2211+1136 and ZTF J1901+1458
M. F. Sousa, J. G. Coelho, J. C. N. de Araujo +2
Double white dwarf (DWD) mergers are possibly the leading formation channel of massive, rapidly rotating, high-field magnetic white dwarfs (HFMWDs). However, the direct link connec…
Gravitational Wave Emission by Accretion of Matter and Magnetic Deformation in Fast Rotating White Dwarfs
Manoel F. Sousa, José C. N. de Araujo, Jaziel G. Coelho
We discuss some aspects of Sousa et al.(2020a, 2020b) concerning two mechanisms of gravitational wave (GW) emission in fast-spinning white dwarfs (WDs): accretion of matter and mag…
Mass limits of the extremely fast-spinning white dwarf CTCV J2056-3014
Edson Otoniel, Jaziel G. Coelho, Sílvia P. Nunes +2
CTCV J2056--3014 is a nearby cataclysmic variable with an orbital period of approximately hours at a distance of about light-years from the Earth. Its recently reporte…
Gravitational waves from fast-spinning white dwarfs
Manoel F. Sousa, Jaziel G. Coelho, José C. N. de Araujo
Two mechanisms of gravitational waves (GWs) emission in fast-spinning white dwarfs (WDs) are investigated: accretion of matter and magnetic deformation. In both cases, the GW emiss…
Evidence for a multipolar magnetic field in SGR J1745-2900 from X-ray light-curve analysis
Rafael C. R. de Lima, Jaziel G. Coelho, Jonas P. Pereira +2
SGR J1745-2900 was detected from its outburst activity in April 2013 and it was the first soft gamma repeater (SGR) detected near the center of the Galaxy (Sagittarius A). We u…
Gravitational waves from SGRs and AXPs as fast-spinning white dwarfs
Manoel F. Sousa, Jaziel G. Coelho, José C. N. de Araujo
Gravitational waves (GWs) emission due to magnetic deformation mechanism is applied for Soft Gamma Repeaters (SGRs) and Anomalous X-Ray Pulsars(AXPs), described as fast-spinning an…
Born-Infeld magnetars: larger than classical toroidal magnetic fields and implications for gravitational-wave astronomy
Jonas P. Pereira, Jaziel G. Coelho, Rafael C. R. de Lima
Magnetars are neutron stars presenting bursts and outbursts of X- and soft-gamma rays that can be understood with the presence of very large magnetic fields. Thus, nonlinear electr…
Gravitational waves from pulsars in the context of magnetic ellipticity
José C. N. de Araujo, Jaziel G. Coelho, César A. Costa
In one of our previous articles we have considered the role of a time dependent magnetic ellipticity on pulsars' braking indices and on the putative gravitational waves these objec…
A different nature between the radio AXPs in comparison to the others SGRs/AXPs
J. G. Coelho, M. Malheiro
SGRs/AXPs are considered a subclass of pulsars powered by magnetic energy and not by rotation, as normal radio pulsars. They are understood as strongly magnetized neutron star, wit…
Describing SGRs/AXPs as fast and magnetized white dwarfs
M. Malheiro, J. G. Coelho
Over the last decade, observational evidence has mounted that SGRs/AXPs belong to a particular class of pulsars. Furthermore, fast and very magnetic white dwarfs have been observed…
Do SGRs/AXPs and radio AXPs have the same nature?
J. G. Coelho, M. Malheiro
SGRs/AXPs are assumed to be a class of neutron stars (NS) powered by magnetic energy and not by rotation, as normal radio pulsars. However, the recent discovery of radio-pulsed emi…
Magnetic Dipole Moment of SGRs and AXPs Described as Massive and Magnetic White Dwarfs
J. G. Coelho, M. Malheiro
The Anomalous X-ray Pulsars (AXPs) and Soft Gamma-ray Repeaters (SGRs) are some of the most interesting groups of pulsars that have been intensively studied in the recent years. Th…
Similarities of SGRs with low magnetic field and white dwarf pulsars
J. G. Coelho, M. Malheiro
Some of the most interesting types of astrophysical objects that have been intensively studied in the recent years are the Anomalous X-ray Pulsars (AXPs) and Soft Gamma-ray Repeate…