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相关论文: The Kepler Catalog of Stellar Flares

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Stellar magnetic activity, just like that of the Sun, manifests itself in the form of flares and spots on the surface of the star. In the solar case, the largest flares originate from large active regions. In this work, we present a study…

太阳与恒星天体物理 · 物理学 2021-12-01 Alexandre Araújo , Adriana Valio

Stellar variability is a limiting factor for planet detection and characterization, particularly around active M-type stars. Here we revisit one of the most active stars from the Kepler mission, the M4 star GJ 1243, and use a sample of 414…

太阳与恒星天体物理 · 物理学 2022-05-13 Guadalupe Tovar Mendoza , James R. A. Davenport , Eric Agol , James A. G. Jackman , Suzanne L. Hawley

We searched for superflares on solar-type stars using Kepler data with 1 min sampling in order to detect superflares with short duration. We found 187 superflares on 23 solar-type stars whose bolometric energy ranges from the order of…

太阳与恒星天体物理 · 物理学 2015-05-11 Hiroyuki Maehara , Takuya Shibayama , Yuta Notsu , Shota Notsu , Satoshi Honda , Daisaku Nogami , Kazunari Shibata

The analysis of non-variable stars is generally neglected in the literature. However, such objects are needed for many calibration processes and for testing pulsational models. The photometric time series of the Kepler satellite mission…

We present the results of a search for white light flares on the ~23,000 cool dwarfs in the Kepler Quarter 1 long cadence data. We have identified 373 flaring stars, some of which flare multiple times during the observation period. We…

About 22000 Kepler stars and nearly 60000 TESS stars from sectors 1-24 have been classified according to variability type. A large proportion of stars of all spectral types appear to have periods consistent with the expected rotation…

太阳与恒星天体物理 · 物理学 2020-08-17 L. A. Balona

The energy in the solar acoustic spectrum is known to be correlated with flares, but it is not known if the same is true for stellar flares? In order to answer this question, we have analyzed 73 flares in 39 solar-like stars. These flares…

太阳与恒星天体物理 · 物理学 2015-06-18 C. Karoff

We report on a population of short duration near-ultraviolet (NUV) flares in stars observed by the Kepler and GALEX missions. We analyzed NUV light curves of 34,276 stars observed from 2009-2013 by both the GALEX (NUV) and Kepler (optical)…

太阳与恒星天体物理 · 物理学 2019-10-02 C. E. Brasseur , Rachel A. Osten , Scott W. Fleming

The presence and strength of a stellar magnetic field and activity is rooted in a star's fundamental parameters such as mass and age. Can flares serve as an accurate stellar "clock"? To explore if we can quantify an activity-age relation in…

太阳与恒星天体物理 · 物理学 2019-02-13 Ekaterina Ilin , Sarah J. Schmidt , James R. A. Davenport , Klaus G. Strassmeier

We wrote and used an automated flare detection Python script to search for super-flares on main-sequence stars of types A, F, G, K, and M in Kepler's long-cadence data from Q0 to Q17. We studied the statistical properties of the occurrence…

太阳与恒星天体物理 · 物理学 2023-06-08 A. K. Althukair , D. Tsiklauri

Superflares on solar-type stars has been a rapidly developing field ever since the launch of $\it Kepler$. Over the years, there have been several studies investigating the statistics of these explosive events. In this study, we present a…

太阳与恒星天体物理 · 物理学 2020-04-22 Lauren Doyle , Gavin Ramsay , J. Gerard Doyle

We present the results of a search for stellar flares in the first data release from the Next Generation Transit Survey (NGTS). We have found 610 flares from 339 stars, with spectral types between F8 and M6, the majority of which belong to…

In our previous work, we searched for super-flares on different types of stars while focusing on G-type dwarfs using entire Kepler data to study statistical properties of the occurrence rate of super-flares. Using these new data, as a…

太阳与恒星天体物理 · 物理学 2023-12-06 A. k. Althukair , D. Tsiklauri

The study of stellar flares has increased with new observations from CoRoT, Kepler, and TESS satellites, revealing the broadband visible emission from these events. Typically, stellar flares have been modelled as $10^4$ K blackbody plasma…

太阳与恒星天体物理 · 物理学 2024-01-17 Paulo J. A. Simões , Alexandre Araújo , Adriana Válio , Lyndsay Fletcher

We present the first data release of the Kepler Smear Campaign, using collateral 'smear' data obtained in the Kepler four-year mission to reconstruct light curves of 102 stars too bright to have been otherwise targeted. We describe the…

Flare research is becoming a burgeoning realm in the study of stellar activity due to the launch of {\it Kepler} in 2009. {\it Kepler} provides data with two time resolutions, i.e., the long-cadence (LC) data with a time resolution of 30…

太阳与恒星天体物理 · 物理学 2018-06-06 Huiqin Yang , Jifeng Liu , Erlin Qiao , Haotong Zhang , Qing Gao , Kaiming Cui , Henggeng Han

Flares, energetic eruptions on the surfaces of stars, are an unmistakable manifestation of magnetically driven emission. Their occurrence rates and energy distributions trace stellar characteristics such as mass and age. But before flares…

The relation between magnetic activity and rotation in late-type stars provides fundamental information on stellar dynamos and angular momentum evolution. Rotation/activity studies found in the literature suffer from inhomogeneity in the…

We present the results of a search for potential transit signals in four years of photometry data acquired by the Kepler Mission. The targets of the search include 111,800 stars which were observed for the entire interval and 85,522 stars…

The Kepler mission has led to the serendipitous discovery of a significant number of `super flares' - white light flares with energies between 10^33 erg and 10^36 erg - on solar-type stars. It has been speculated that these could be `freak'…

太阳与恒星天体物理 · 物理学 2014-09-05 R. Wichmann , B. Fuhrmeister , U. Wolter , E. Nagel