A5093285926- Astronomical Observations and Instrumentation
- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Geophysics and Gravity Measurements
- Atmospheric and Environmental Gas Dynamics
- Advanced Optical Sensing Technologies
- Remote Sensing in Agriculture
- Remote Sensing and LiDAR Applications
- Spacecraft and Cryogenic Technologies
- GNSS positioning and interference
- Astronomy and Astrophysical Research
- Advanced Measurement and Detection Methods
Centro Brasileiro de Pesquisas Físicas
2024
ABSTRACT We present the S-PLUS Transient Extension Program (STEP): a supernova and fast transient survey conducted in southern hemisphere using data from Southern Photometric Local Universe Survey (S-PLUS) Main T80-South telescope. astrophysical phenomena have range of interest that goes through different fields astrophysics cosmology. With detection an electromagnetic counterpart to gravitational wave (GW) event GW170817 binary neutron stars merger, new techniques resources study transients...
We present a new constraint on the Hubble constant ($H_0$) from standard dark siren method using sample of $5$ well-covered gravitational wave (GW) alerts reported during first part fourth LIGO/Virgo/KAGRA observing runs in combination with sirens three runs. Our methodology relies galaxy catalog alone. use full probability density estimation photometric redshifts derived by deep learning DESI Legacy Survey and DELVE catalogs. add constraints binary black hole mergers candidates S231226av,...
Abstract Kilonovae represent a category of astrophysical transients, identifiable as the electromagnetic (EM) counterparts associated with coalescence events binary systems comprising neutron stars and star–black hole pairs. They act probes for heavy-element nucleosynthesis in environments. These studies rely on an inference physical parameters (e.g., ejecta mass, velocity, composition) that describe kilonovae-based EM observations. This is complex inverse problem typically addressed...
ABSTRACT We present a new constraint on the Hubble constant ($H_0$) from standard dark siren method using sample of five well-covered gravitational wave (GW) alerts reported during first part fourth observing run Laser Interferometer Gravitational-Wave Observatory (LIGO), Virgo and Kamioka Gravitational Wave Detector (KAGRA) collaborations (LVK) with three updated sirens third observation in combination previous constraints runs. Our methodology relies galaxy catalogue alone. use deep...
Photometric wide-field surveys are imaging the sky in unprecedented detail. These face a significant challenge efficiently estimating galactic photometric redshifts while accurately quantifying associated uncertainties. In this work, we address by exploring estimation of Probability Density Functions (PDFs) for galaxies across vast area 17,000 square degrees, encompassing objects with median 5$\sigma$ point-source depth $g$ = 24.3, $r$ 23.9, $i$ 23.5, and $z$ 22.8 mag. Our approach uses deep...
Kilonovae represent a category of astrophysical transients, identifiable as the electromagnetic observable counterparts associated with coalescence events binary systems comprising neutron stars and star-black hole pairs. They act probes for heavy-element nucleosynthesis in environments. These studies rely on inference physical parameters (e.g., ejecta mass, velocity, composition) that describe kilonovae based observations. This is complex inverse problem typically addressed sampling-based...
We present the S-PLUS Transient Extension Program (STEP): a supernova and fast transient survey conducted in southern hemisphere using data from Southern Photometric Local Universe Survey (S-PLUS) Main T80-South telescope. astrophysical phenomena have range of interest that goes through different fields astrophysics cosmology. With detection an electromagnetic counterpart to gravitational wave (GW) event GW170817 binary neutron stars merger, new techniques resources study transients...