RT Journal Article
T1 Optical microflares in LS I +61 303 and the search for their multiwavelength counterpart
A1 Mestre, Enrique
A1 Sánchez Ayaso, Estrella
A1 Luque Escamilla, Pedro L.
A1 Martí, Josep
A1 Paredes, Josep M.
A1 Ser, Daniel del
A1 Núñez, Jorge
AB Context. Stellar sources of gamma rays are one of the front lines in modern astrophysics whose understanding can benefit from observational tools not originally designed for their study.Aims. We take advantage of the high precision photometric capabilities of present-day space facilities to obtain a new perspective on the optical behavior of the X-ray and gamma-ray binary LS I +61 303. Previously unknown phenomena whose effects manifest with amplitudes below 0.01 magnitude can now be clearly observed and studied.Methods. Our work is mainly based on the analysis of optical and gamma-ray archival data and uses the tools recommended by the different collaborations that provide these valuable observational resources (in particular, the TESS and Fermi orbiting observatories). In addition, complementary ground-based optical spectroscopy has also been conducted.Results. We report the discovery of small-amplitude optical flares on timescales of a day in the LS I +61 303 light curve. Different alternative scenarios to explain their origin are tentatively proposed.
PB EDP Sciences
SN 0004-6361
SN 1432-0746 (electrónico)
YR 2022
FD 2022
LK https://hdl.handle.net/10272/21707
UL https://hdl.handle.net/10272/21707
LA eng
NO Mestre, E., Sánchez-Ayaso, E., Luque-Escamilla, P. L., Martí, J., Paredes, J. M., del Ser, D., & Núñez, J. (2022). Optical microflares in LS I +61 303 and the search for their multiwavelength counterpart. In Astronomy & Astrophysics (Vol. 662, p. A27). EDP Sciences. https://doi.org/10.1051/0004-6361/202243318
NO EM acknowledges support by grant P18-FR-1580 fromthe Consejería de Economía y Conocimiento de la Junta de Andalucía underthe Programa Operativo FEDER 2014–2020. ESA, PLLE and JM acknowledgesupport by grant PID2019-105510GB-C32/AEI/10.13039/501100011033 fromState Agency for Research of the Spanish Ministry of Science and Innovationentitled High energy sources with outflows at different scales: observation ofgalactic sources. We also acknowledge support by Consejería de Economía,Innovación, Ciencia y Empleo of Junta de Andalucía as research group FQM-322, as well as FEDER funds. JMP, DdS and JN acknowledge financial supportfrom the State Agency for Research of the Spanish Ministry of Science andInnovation under grant PID2019-105510GB-C31 and through the Unit of ExcellenceMaría de Maeztu 2020-2023 award to the Institute of Cosmos Sciences(CEX2019-000918-M). This paper includes data collected with the TESS mission,obtained from the MAST data archive at the Space Telescope Science Institute(STScI). Funding for the TESS mission is provided by the NASA ExplorerProgram. STScI is operated by the Association of Universities for Research inAstronomy, Inc., under NASA contract NAS 5-26555.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026