111. |
112. Broadband multi-wavelength properties of M87 during the 2018 EHT campaign including a very high energy flaring episodeJ. C. Algaba, M. Baloković, S. Chandra, W.-Y. Cheong, Y.-Z. Cui, F. D'Ammando, A. D. Falcone, N. M. Ford, M. Giroletti, Gabrijela Zaharijas, 2024, izvirni znanstveni članek Ključne besede: galaxies, active, individual, M 87, jets, nuclei
Objavljeno v RUNG: 13.01.2025; Ogledov: 402; Prenosov: 6
 Celotno besedilo (6,37 MB)
Gradivo ima več datotek! Več... |
113. |
114. |
115. Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dkeM. Maskoliunas, Łukasz Wyrzykowski, K. Howil, P. J. Mikołajczyk, P. Zieliński, Z. Kaczmarek, K. Kruszyńska, M. Jabłońska, J. Zdanavičius, Mateusz Bronikowski, 2024, izvirni znanstveni članek Opis: We present the results of our analysis of Gaia19dke, an extraordinary microlensing event in the Cygnus constellation that the Gaia satellite discovered. This event featured a strong microlensing parallax effect, resulting in multiple light curve peaks. We conducted extensive photometric, spectroscopic, and high-resolution imaging follow-up observations to determine the mass and nature of the invisible lensing object. Using the Milky Way priors on the density and proper motion of lenses, we found that the lens is likely to be located at a distance of DL=3.3(+2.1, -1.7) kpc, and has a mass of ML=0.50(+0.82, -0.27) M☉. Based on its low luminosity and mass, we propose that the lens in the Gaia19dke event is either a main sequence star or an isolated white dwarf. Due to its brightness, longevity, and lack of blending, Gaia19dke is a target for which the forthcoming Gaia Data Release 4 data will help to constrain the parameters of the lens.
Ključne besede: gravitational lensing, micro stars, fundamental parameters, white dwarfs, astrophysics, solar astrophysics, stellar astrophysics, astrophysics of galaxies, instrumentation for astrophysics, methods for astrophysics
Objavljeno v RUNG: 13.01.2025; Ogledov: 392; Prenosov: 2
 Povezava na datoteko
Gradivo ima več datotek! Več... |
116. |
117. |
118. |
119. |
120. |
