An X-ray outburst from the rapidly accreting young star that illuminates McNeil's nebula

  title={An X-ray outburst from the rapidly accreting young star that illuminates McNeil's nebula},
  author={Joel H. Kastner and Michael Richmond and Nicol'as F. Del Grosso and David A. Weintraub and Theodore Simon and Adam Frank and Kenji Hamaguchi and Hideki Ozawa and Arne Anthon Henden},
Young, low-mass stars are luminous X-ray sources whose powerful X-ray flares may exert a profound influence over the process of planet formation. The origin of the X-ray emission is uncertain. Although many (or perhaps most) recently formed, low-mass stars emit X-rays as a consequence of solar-like coronal activity, it has also been suggested that X-ray emission may be a direct result of mass accretion onto the forming star. Here we report X-ray imaging spectroscopy observations which reveal a… 
The pre-main-sequence (PMS) star V1647 Ori has recently undergone two optical/near-infrared (OIR) outbursts that are associated with dramatic enhancements in the stellar accretion rate. Our intensive
Detection of a Cool, Accretion-Shock-Generated X-Ray Plasma in EX Lupi During the 2008 Optical Eruption
EX Lupi is the prototype for a class of young, pre-main-sequence stars which are observed to undergo irregular, presumably accretion-generated, optical outbursts that result in a several magnitude
V1647 Orionis: The X-Ray Evolution of a Pre-Main-Sequence Accretion Burst
We present Chandra X-Ray Observatory monitoring observations of the recent accretion outburst displayed by the pre-main-sequence (pre-MS) star V1647 Ori. The X-ray observations were obtained over a
X-Ray and Infrared Observations of Embedded Young Stars in NGC 2264
Images of the NGC 2264 star-forming region, which we have acquired with the XMM-Newton spacecraft, reveal strong X-ray emission from three deeply embedded (AV ≥ 10 mag) young stellar objects in the
X-Ray Emission from Orion Nebula Cluster Stars with Circumstellar Disks and Jets
We investigate the X-ray and near-infrared emission properties of a sample of pre-main-sequence (PMS) stellar systems in the Orion Nebula Cluster (ONC) that display evidence for circumstellar disks
Enhanced X-ray variability from V1647 Ori, the young star in outburst illuminating McNeil's Nebula
We report a ~38 ks X-ray observation of McNeil's Nebula obtained with XMM-Newton  on 2004 April 4. V1647 Ori, the young star in outburst illuminating McNeil's Nebula, is detected with XMM-Newton  and
X-rays from T Tauri: a test case for accreting T Tauri stars
Context. The generation of X-rays in accreting T Tauri stars (TTS) is thought to be predominantly due to energy dissipation in magnetic elds, but alternative X-ray generation mechanisms have been
First X-ray dectection of the young variable V1180 Cas
V1180 Cas is a young variable that has shown strong photometric fluctuations (Delta_I~6mag) in the recent past, which have been attributed to events of enhanced accretion. The source has entered a
High-energy Signatures in YSOs
The discovery of bright X-ray emission from young low-mass stars in the wake of the launch of the EINSTEINX-ray observatory (see Chap. 2) [66, 67] truly took researchers by surprise. X-rays from
X-Rays from the Mira AB Binary System
We present the results of XMM-Newton X-ray observations of the Mira AB binary system, which consists of a pulsating, asymptotic giant branch primary and nearby (~0.″6 separation) secondary of