☆ 4.7 Article

A Superflare on YZ Canis Minoris Observed by the Seimei Telescope and TESS: Red Asymmetry of Ha Emission Associated with White-light Emission

ASTROPHYSICAL JOURNAL (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Astronomy & Astrophysics

Discovery of a Long-duration Superflare on a Young Solar-type Star EK Draconis with Nearly Similar Time Evolution for Hα and White-light Emissions

Kosuke Namekata et al.

Summary: This study reports the observation of a long-duration superflare on the young solar-type star EK Draconis. The energy and duration of the flare are much larger than those of solar flares, making it the largest superflare ever detected by optical spectroscopy. The unexpected time evolution suggests different radiation mechanisms compared to solar flares.

ASTROPHYSICAL JOURNAL LETTERS (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Probable detection of an eruptive filament from a superflare on a solar-type star

Kosuke Namekata et al.

Summary: Studies have identified a stellar filament eruption associated with a superflare, potentially leading to a coronal mass ejection, which has significant implications for the environment and stellar evolution.

NATURE ASTRONOMY (2022)

添加到收藏夹

Article Astronomy & Astrophysics

The Atmospheric Response to High Nonthermal Electron-beam Fluxes in Solar Flares. II. Hydrogen-broadening Predictions for Solar Flare Observations with the Daniel K. Inouye Solar Telescope

Adam F. Kowalski et al.

Summary: We studied the redshifted components of chromospheric emission lines in solar flares and found that they are generally caused by electron-beam-generated chromospheric condensations. Our observations also suggest that the pressure broadening of the hydrogen Balmer series can be used to accurately interpret the upcoming spectral data of flares.

ASTROPHYSICAL JOURNAL (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Sun-as-a-star Analysis of Hα Spectra of a Solar Flare Observed by SMART/SDDI: Time Evolution of Red Asymmetry and Line Broadening

Kosuke Namekata et al.

Summary: It has been found that red/blue asymmetries can be observed in the H alpha line profiles of stellar flares, indicating chromospheric dynamics and prominence activations. By analyzing the H alpha spectra of a solar flare using the Sun-as-a-star approach, it was discovered that the redshift velocities and line widths of the flare region are smaller when compared to those with strong intensity. The temporal evolution of these spectral behaviors could provide insights into the origin of the H alpha red asymmetry in stellar flares.

ASTROPHYSICAL JOURNAL (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Sun-as-a-star Analyses of Various Solar Active Events Using Hα Spectral Images Taken by SMART/SDDI

Takato Otsu et al.

Summary: Sun-as-a-star analyses are helpful in interpreting stellar data, and through analyzing H alpha spectra of various active events on the Sun, it is possible to identify active phenomena on Sun-like stars. Additionally, it has been observed that filament eruptions, even with redshifted absorptions, can lead to coronal mass ejections (CMEs).

ASTROPHYSICAL JOURNAL (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Search for flares and associated CMEs on late-type main-sequence stars in optical SDSS spectra

Florian Koller et al.

Summary: This study aims to detect and classify stellar flares and potential coronal mass ejection (CME) signatures in optical spectra from the SDSS data release 14, focusing on over 630,000 F, G, K, and M main-sequence stars. Significant amplitude changes in Hα and Hβ spectral lines were used to identify flares, while asymmetries in Balmer lines were searched for to detect CME candidates. The study identified 281 flares and 6 possible CME candidates in late-type stars.

ASTRONOMY & ASTROPHYSICS (2021)

添加到收藏夹

Article Astronomy & Astrophysics

When Hot Meets Cold: Post-flare Coronal Rain

Wenzhi Ruan et al.

Summary: This study reports on a simulation of a solar flare evolving from pre-flare to impulsive phase and into the gradual phase, successfully reproducing post-flare coronal rain. Catastrophic cooling due to thermal instability leads to the formation of the rain, driving the sudden condensation phenomenon. The runaway cooling and rain formation also result in the appearance of dark post-flare loop systems, confirming earlier observational findings regarding the dominance of thermal conduction and radiative losses in the cooling of PFLs.

ASTROPHYSICAL JOURNAL LETTERS (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Time-resolved spectroscopy and photometry of M dwarf flare star YZ Canis Minoris with OISTER and TESS: Blue asymmetry in the H alpha line during the non-white light flare

Hiroyuki Maehara et al.

Summary: This paper presents the results of spectroscopic and photometric observations of the M-type flare star YZ CMi within the OISTER collaborations during the TESS observation period. The study found a blue asymmetry in one of the H alpha flares associated with white-light flares on YZ CMi, suggesting upward flows of chromospheric cool plasma even without detectable red/near-infrared continuum brightening. Estimated mass and kinetic energy of the upward-moving material were comparable to expectations from empirical relations for stellar flares and solar coronal mass ejections (CMEs). The estimated kinetic energy for the non-white-light flare on YZ CMi was smaller than expected from the relation for solar CMEs, possibly due to differences in velocity between CMEs and prominence eruptions.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Statistical Properties of Superflares on Solar-type Stars: Results Using All of the Kepler Primary Mission Data

Soshi Okamoto et al.

Summary: A study was conducted on solar-type and Sun-like stars to analyze superflares using Kepler and Gaia data, finding that the frequency of superflares decreases as the stellar rotation period increases. The maximum energy of superflares on Sun-like stars was found to be 4 x 10^34 erg, with the Sun potentially causing similar X700-class and X1000-class flares every approximately 3000 and 6000 years, respectively.

ASTROPHYSICAL JOURNAL (2021)

添加到收藏夹

Review Astronomy & Astrophysics

Impact of space weather on climate and habitability of terrestrial-type exoplanets

V. S. Airapetian et al.

INTERNATIONAL JOURNAL OF ASTROBIOLOGY (2020)

添加到收藏夹

Article Astronomy & Astrophysics

Thermal instabilities: Fragmentation and field misalignment of filament fine structure

N. Claes et al.

ASTRONOMY & ASTROPHYSICS (2020)

添加到收藏夹

Article Astronomy & Astrophysics

The Seimei telescope project and technical developments

Mikio Kurita et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2020)

添加到收藏夹

Article Astronomy & Astrophysics

Optical and X-ray observations of stellar flares on an active M dwarf AD Leonis with the Seimei Telescope, SCAT, NICER, and OISTER

Kosuke Namekata et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2020)

添加到收藏夹

Article Astronomy & Astrophysics

Electron Beams Cannot Directly Produce Coronal Rain

Jeffrey W. Reep et al.

ASTROPHYSICAL JOURNAL (2020)

添加到收藏夹

Article Astronomy & Astrophysics

EvryFlare. III. Temperature Evolution and Habitability Impacts of Dozens of Superflares Observed Simultaneously by Evryscope and TESS

Ward S. Howard et al.

ASTROPHYSICAL JOURNAL (2020)

添加到收藏夹

Article Astronomy & Astrophysics

Thermal stability of magnetohydrodynamic modes in homogeneous plasmas

N. Claes et al.

ASTRONOMY & ASTROPHYSICS (2019)

添加到收藏夹

Article Astronomy & Astrophysics

The quest for stellar coronal mass ejections in late-type stars I. Investigating Balmer-line asymmetries of single stars in Virtual Observatory data

Krisztian Vida et al.

ASTRONOMY & ASTROPHYSICS (2019)

添加到收藏夹

Article Astronomy & Astrophysics

Soft X-ray heating as a mechanism of optical continuum generation in solar-type star superflares

Bulat A. Nizamov

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

添加到收藏夹

Article Astronomy & Astrophysics

KOOLS-IFU: Kyoto Okayama Optical Low-dispersion Spectrograph with optical-fiber Integral Field Unit

Kazuya Matsubayashi et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2019)

添加到收藏夹

Article Astronomy & Astrophysics

Do Kepler Superflare Stars Really Include Slowly Rotating Sun-like Stars?-Results Using APO 3.5 m Telescope Spectroscopic Observations and Gaia-DR2 Data

Yuta Notsu et al.

ASTROPHYSICAL JOURNAL (2019)

添加到收藏夹

Article Astronomy & Astrophysics

Impact of Stellar Superflares on Planetary Habitability

Yosuke A. Yamashiki et al.

ASTROPHYSICAL JOURNAL (2019)

添加到收藏夹

Article Astronomy & Astrophysics

The catalogue of radial velocity standard stars

C. Soubiran et al.

ASTRONOMY & ASTROPHYSICS (2018)

添加到收藏夹

Article Astronomy & Astrophysics

The CARMENES search for exoplanets around M dwarfs Wing asymmetries of Hα, Na I D, and He I lines

B. Fuhrmeister et al.

ASTRONOMY & ASTROPHYSICS (2018)

添加到收藏夹

Article Astronomy & Astrophysics

The catalogue of radial velocity standard stars

C. Soubiran et al.

ASTRONOMY & ASTROPHYSICS (2018)

添加到收藏夹

Article Astronomy & Astrophysics

The CARMENES search for exoplanets around M dwarfs Wing asymmetries of Hα, Na I D, and He I lines

B. Fuhrmeister et al.

ASTRONOMY & ASTROPHYSICS (2018)

添加到收藏夹

Article Astronomy & Astrophysics

Suppression of Coronal Mass Ejections in Active Stars by an Overlying Large-scale Magnetic Field: A Numerical Study

Julian D. Alvarado-Gomez et al.

ASTROPHYSICAL JOURNAL (2018)

添加到收藏夹

Article Astronomy & Astrophysics

Statistical Studies of Solar White-light Flares and Comparisons with Superflares on Solar-type Stars

Kosuke Namekata et al.

ASTROPHYSICAL JOURNAL (2017)

添加到收藏夹

Article Astronomy & Astrophysics

The Atmospheric Response to High Nonthermal Electron Beam Fluxes in Solar Flares. I. Modeling the Brightest NUV Footpoints in the X1 Solar Flare of 2014 March 29

Adam F. Kowalski et al.

ASTROPHYSICAL JOURNAL (2017)

添加到收藏夹

Article Astronomy & Astrophysics

Hydrogen Balmer Line Broadening in Solar and Stellar Flares

Adam F. Kowalski et al.

ASTROPHYSICAL JOURNAL (2017)

添加到收藏夹

Article Geosciences, Multidisciplinary

Prebiotic chemistry and atmospheric warming of early Earth by an active young Sun

V. S. Airapetian et al.

NATURE GEOSCIENCE (2016)

添加到收藏夹

Article Astronomy & Astrophysics

M DWARF FLARE CONTINUUM VARIATIONS ON ONE-SECOND TIMESCALES: CALIBRATING AND MODELING OF ULTRACAM FLARE COLOR INDICES

Adam F. Kowalski et al.

ASTROPHYSICAL JOURNAL (2016)

添加到收藏夹

Article Astronomy & Astrophysics

TEMPORAL EVOLUTION AND SPATIAL DISTRIBUTION OF WHITE-LIGHT FLARE KERNELS IN A SOLAR FLARE

T. Kawate et al.

ASTROPHYSICAL JOURNAL (2016)

添加到收藏夹

Article Astronomy & Astrophysics

THE KEPLER CATALOG OF STELLAR FLARES

James R. A. Davenport

ASTROPHYSICAL JOURNAL (2016)

添加到收藏夹

Article Astronomy & Astrophysics

ROTATION-ACTIVITY CORRELATIONS IN K AND M DWARFS. I. STELLAR PARAMETERS AND COMPILATIONS OF v sin i AND P/sin i FOR A LARGE SAMPLE OF LATE-K AND M DWARFS

E. R. Houdebine et al.

ASTROPHYSICAL JOURNAL (2016)

添加到收藏夹

Article Astronomy & Astrophysics

New Insights into White-Light Flare Emission from Radiative-Hydrodynamic Modeling of a Chromospheric Condensation

Adam F. Kowalski et al.

SOLAR PHYSICS (2015)

添加到收藏夹

Article Engineering, Aerospace

Transiting Exoplanet Survey Satellite

George R. Ricker et al.

JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS (2015)

添加到收藏夹

Article Astronomy & Astrophysics

PHOTOMETRIC STUDY ON STELLAR MAGNETIC ACTIVITY. I. FLARE VARIABILITY OF RED DWARF STARS IN THE OPEN CLUSTER M37

S. -W. Chang et al.

ASTROPHYSICAL JOURNAL (2015)

添加到收藏夹

Article Astronomy & Astrophysics

AN EMPIRICAL CALIBRATION TO ESTIMATE COOL DWARF FUNDAMENTAL PARAMETERS FROM H-BAND SPECTRA

Elisabeth R. Newton et al.

ASTROPHYSICAL JOURNAL (2015)

添加到收藏夹

Article Astronomy & Astrophysics

M DWARF METALLICITIES AND GIANT PLANET OCCURRENCE: IRONING OUT UNCERTAINTIES AND SYSTEMATICS

Eric Gaidos et al.

ASTROPHYSICAL JOURNAL (2014)

添加到收藏夹

Article Astronomy & Astrophysics

A SIMPLE MODEL OF CHROMOSPHERIC EVAPORATION AND CONDENSATION DRIVEN CONDUCTIVELY IN A SOLAR FLARE

D. W. Longcope

ASTROPHYSICAL JOURNAL (2014)

添加到收藏夹

Article Astronomy & Astrophysics

SUPERFLARE OCCURRENCE AND ENERGIES ON G-, K-, AND M-TYPE DWARFS

S. Candelaresi et al.

ASTROPHYSICAL JOURNAL (2014)

添加到收藏夹

Article Astronomy & Astrophysics

KEPLER FLARES. I. ACTIVE AND INACTIVE M DWARFS

Suzanne L. Hawley et al.

ASTROPHYSICAL JOURNAL (2014)

添加到收藏夹

Article Astronomy & Astrophysics

IMPLICATIONS OF MASS AND ENERGY LOSS DUE TO CORONAL MASS EJECTIONS ON MAGNETICALLY ACTIVE STARS

Jeremy J. Drake et al.

ASTROPHYSICAL JOURNAL (2013)

添加到收藏夹

Article Astronomy & Astrophysics

THE COOLING OF CORONAL PLASMAS. IV. CATASTROPHIC COOLING OF LOOPS

P. J. Cargill et al.

ASTROPHYSICAL JOURNAL (2013)

添加到收藏夹

Article Astronomy & Astrophysics

SUPERFLARES ON SOLAR-TYPE STARS OBSERVED WITH KEPLER II. PHOTOMETRIC VARIABILITY OF SUPERFLARE-GENERATING STARS: A SIGNATURE OF STELLAR ROTATION AND STARSPOTS

Yuta Notsu et al.

ASTROPHYSICAL JOURNAL (2013)

添加到收藏夹

Article Astronomy & Astrophysics

SUPERFLARES ON SOLAR-TYPE STARS OBSERVED WITH KEPLER. I. STATISTICAL PROPERTIES OF SUPERFLARES

Takuya Shibayama et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2013)

添加到收藏夹

Article Astronomy & Astrophysics

TIME-RESOLVED PROPERTIES AND GLOBAL TRENDS IN dMe FLARES FROM SIMULTANEOUS PHOTOMETRY AND SPECTRA

Adam F. Kowalski et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2013)

添加到收藏夹

Article Astronomy & Astrophysics

Can Superflares Occur on Our Sun?

Kazunari Shibata et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2013)

添加到收藏夹

Article Astronomy & Astrophysics

Solar Flares: Magnetohydrodynamic Processes

Kazunari Shibata et al.

Living Reviews in Solar Physics (2013)

添加到收藏夹

Article Astronomy & Astrophysics

GLOBAL ENERGETICS OF THIRTY-EIGHT LARGE SOLAR ERUPTIVE EVENTS

A. G. Emslie et al.

ASTROPHYSICAL JOURNAL (2012)

添加到收藏夹

Article Multidisciplinary Sciences

Superflares on solar-type stars

Hiroyuki Maehara et al.

NATURE (2012)

添加到收藏夹

Article Astronomy & Astrophysics

A Study on Red Asymmetry of Hα Flare Ribbons Using a Narrowband Filtergram in the 2001 April 10 Solar Flare

Ayumi Asai et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2012)

添加到收藏夹

Article Astronomy & Astrophysics

The Sun as a star: observations of white-light flares

M. Kretzschmar

ASTRONOMY & ASTROPHYSICS (2011)

添加到收藏夹

Article Astronomy & Astrophysics

HIGH-RESOLUTION IMAGING OF SOLAR FLARE RIBBONS AND ITS IMPLICATION ON THE THICK-TARGET BEAM MODEL

Saem Krucker et al.

ASTROPHYSICAL JOURNAL (2011)

添加到收藏夹

Article Astronomy & Astrophysics

Solar Flares and Coronal Mass Ejections: A Statistically Determined Flare Flux-CME Mass Correlation

A. N. Aarnio et al.

SOLAR PHYSICS (2011)

添加到收藏夹

Article Astronomy & Astrophysics

A WHITE LIGHT MEGAFLARE ON THE dM4.5e STAR YZ CMi

Adam F. Kowalski et al.

ASTROPHYSICAL JOURNAL LETTERS (2010)

添加到收藏夹

Article Astronomy & Astrophysics

M DWARFS IN SLOAN DIGITAL SKY SURVEY STRIPE 82: PHOTOMETRIC LIGHT CURVES AND FLARE RATE ANALYSIS

Adam F. Kowalski et al.

ASTRONOMICAL JOURNAL (2009)

添加到收藏夹

Article Astronomy & Astrophysics

Large-scale magnetic topologies of mid M dwarfs

J. Morin et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2008)

添加到收藏夹

Article Astronomy & Astrophysics

Radiative hydrodynamic models of optical and ultraviolet emission from M dwarf flares

Joel C. Allred et al.

ASTROPHYSICAL JOURNAL (2006)

添加到收藏夹

Article Astronomy & Astrophysics

High-resolution observations of multiwavelength emissions during two X-class white-light flares

Y Xu et al.

ASTROPHYSICAL JOURNAL (2006)

添加到收藏夹

Article Astronomy & Astrophysics

White-light flares: A TRACE/RHESSI overview

HS Hudson et al.

SOLAR PHYSICS (2006)

添加到收藏夹

Article Astronomy & Astrophysics

Hα impact polarization observed in a gradual flare

Y Hanaoka

ASTROPHYSICAL JOURNAL (2003)

添加到收藏夹

Article Astronomy & Astrophysics

A Hertzsprung-Russell like diagram for solar/stellar flares and corona: Emission measure versus temperature diagram

K Shibata et al.

ASTROPHYSICAL JOURNAL (2002)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.