Frequent Optical Flares in an M-type Detached Eclipsing Binary TIC 349005337

Ranked by how close their title and abstract are to this paper’s. Select some to read them together.

Closest papers

1. Close Not relevant

   A magnetically heated slim disc-corona model for tidal disruption events

   Wei Chen, Chris Done, Erlin Qiao et al. · 2026 · High Energy Astrophysical Phenomena · AI summary available

   Abstract

   Tidal disruption events (TDEs) can reach super-Eddington luminosities near their peak. While their optical/UV emission may arise from multiple processes, X-rays are more likely to be produced by the innermost accretion flow close to the black hole, analogous to super-Eddington flows in stellar-mass X-ray binaries (XRBs) and active galactic nuclei (AGNs). Super-Eddington AGNs typically show disc-dominated spectra, with weak and steep coronae, while super-Eddington XRBs show a wider variety of spectral shapes. Here we explore disc-corona coupling in TDEs by developing a super-Eddington ($\dot{m}>1$: slim) disc model in which magnetic reconnection transfers some of the accretion power from the …

2. Close Not relevant

   Wideband Study of the Brightest Black Hole X-ray Binary 4U 1543-47 in the 2021 Outburst: Signature of Disk-Wind Regulated Accretion

   Geethu Prabhakar, Samir Mandal, Bhuvana G. R. et al. · 2023 · High Energy Astrophysical Phenomena · cited 8 times · AI summary available

   Abstract

   A comprehensive wideband spectral analysis of the brightest black hole X-ray binary 4U $1543-47$ during its 2021 outburst is carried out for the first time using NICER, NuSTAR, and AstroSat observations by phenomenological and reflection modelling. The source attains a super-Eddington peak luminosity and remains in the soft state, with a small fraction ($< 3\%$) of the inverse-Comptonized photons. The spectral modelling reveals a steep photon index ($\Gamma \sim 2-2.6$) and relatively high inner disk temperature ($T_{in}\sim 0.9-1.27$ keV). The line-of-sight column density varies between ($0.45-0.54$)$\times10^{22}$ cm$^{-2}$. Reflection modelling using the RELXILL model suggests that 4U $15…

3. Close Not relevant

   G 68-34: A Double-Lined M-Dwarf Eclipsing Binary in a Hierarchical Triple System

   Emily K Pass, David Charbonneau · 2023 · Solar and Stellar Astrophysics · cited 3 times · AI summary available

   Abstract

   Using high-resolution spectra from the Tillinghast Reflector Echelle Spectrograph (TRES) and photometry from sector 56 of the Transiting Exoplanet Survey Satellite (TESS), we report that the nearby M dwarf G 68-34 is a double-lined eclipsing binary. The pair is spin-orbit synchronized with a period of 0.655 days. The light curve shows significant spot modulation with a larger photometric amplitude than that of the grazing eclipses. We perform a joint fit to the spectroscopic and photometric data, obtaining masses of $0.3280\pm 0.0034$M$_\odot$ and $0.3207\pm 0.0036$M$_\odot$ and radii of $0.345\pm 0.014$R$_\odot$ and $0.342\pm 0.014$R$_\odot$ after marginalizing over unknowns in the starspot…

4. Close Not relevant

   Tidal Disruption Events in Active Galactic Nuclei: Thermal Radiation and Jets

   Nimrod Tripto, Tsvi Piran, Julian Krolik · 2026 · High Energy Astrophysical Phenomena · AI summary available

   In short

   A radiation-MHD simulation shows that tidal debris striking an AGN disk drives super-Eddington accretion, asymmetric thermal emission, and magnetic-flux accumulation potentially sufficient to power some TDE jets.

5. Close Not relevant

   Analysis of high-resolution FEROS spectroscopy for a sample of variable B-type stars assembled from TESS photometry

   Sarah Gebruers, Andrew Tkachenko, Dominic M. Bowman et al. · 2022 · A&A 665, A36 (2022) · cited 4 times · AI summary available

   Abstract

   Spectroscopic data are necessary to break degeneracies in asteroseismic modelling of the interior structure in high- and intermediate-mass stars. We derive precise photospheric stellar parameters for a sample of 166 B-type stars with TESS light curves, suitable for detailed asteroseismic studies, through a homogeneous spectroscopic analysis. The variability types of these stars are classified based on all currently available TESS sectors. We obtained high-resolution spectra for all 166 targets with the FEROS spectrograph in the context of a large program. The Least-Squares Deconvolution method is employed to investigate spectral line profile variability and to detect binary systems. We ident…

6. Close Not relevant

   The secular tidal disruption of stars by low-mass Super Massive Black Holes secondaries in galactic nuclei

   Giacomo Fragione, Nathan Leigh · 2018 · Astrophysics of Galaxies · cited 26 times · AI summary available

   Abstract

   Stars passing too close to a super massive black hole (SMBH) can be produce tidal disruption events (TDEs). Since the resulting stellar debris can produce a strong electromagnetic flare, TDEs are believed to probe the presence of single SMBHs in galactic nuclei, which otherwise remain dark. A few TDE candidates have so far been observed. In this paper, we show how stars orbiting an IMBH secondary are perturbed by an SMBH primary by means of high-precision direct N-body simulations. We find that the evolution of the stellar orbits are severely affected by the primary SMBH due to secular effects. As a result, those regions of parameter space corresponding to large stellar orbital inclinations …

7. Close Not relevant

   The Kepler Catalog of Stellar Flares

   James R. A. Davenport · 2016 · Solar and Stellar Astrophysics · cited 163 times · AI summary available

   Abstract

   A homogeneous search for stellar flares has been performed using every available Kepler light curve. An iterative light curve de-trending approach was used to filter out both astrophysical and systematic variability to detect flares. The flare recovery completeness has also been computed throughout each light curve using artificial flare injection tests, and the tools for this work have been made publicly available. The final sample contains 851,168 candidate flare events recovered above the 68% completeness threshold, which were detected from 4041 stars, or 1.9% of the stars in the Kepler database. The average flare energy detected is ~$10^{35}$ erg. The net fraction of flare stars increase…

8. Close Not relevant

   Lower-than-expected flare temperatures for TRAPPIST-1

   A. J. Maas, E. Ilin, M. Oshagh et al. · 2022 · A&A 668, A111 (2022) · cited 11 times · AI summary available

   Abstract

   Although high energetic radiation from flares is a potential threat to exoplanet atmospheres and may lead to surface sterilization, it might also provide the extra energy for low-mass stars needed to trigger and sustain prebiotic chemistry. We investigate two flares on TRAPPIST-1, an ultra-cool dwarf star that hosts seven exoplanets of which three lie within its habitable zone. The flares are detected in all four passbands of the MuSCAT2 allowing a determination of their temperatures and bolometric energies. We analyzed the light curves of the MuSCAT1 and MuSCAT2 instruments obtained between 2016 and 2021 in $g,r,i,z_\mathrm{s}$-filters. We conducted an automated flare search and visually co…