X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region

Fabio Reale, Ettore Flaccomio, Antonino Petralia, Salvatore Sciortino, Fabio Reale, Javier Lopez-Santiago

Risultato della ricerca: Article

10 Citazioni (Scopus)

Abstract

Pulsing X-ray emission tracks the plasma "echo" traveling in an extremely long magnetic tube that flares in an Orion pre-main sequence (PMS) star. On the Sun, flares last from minutes to a few hours and the longest-lasting ones typically involve arcades of closed magnetic tubes. Long-lasting X-ray flares are observed in PMS stars. Large-amplitude (∼20%), long-period (∼3 hr) pulsations are detected in the light curve of day-long flares observed by the Advanced CCD Imaging Spectrometer on-board Chandra from PMS stars in the Orion cluster. Detailed hydrodynamic modeling of two flares observed on V772 Ori and OW Ori shows that these pulsations may track the sloshing of plasma along a single long magnetic tube, triggered by a sufficiently short (∼1 hr) heat pulse. These magnetic tubes are ≥20 solar radii long, enough to connect the star with the surrounding disk.
Lingua originaleEnglish
pagine (da-a)51-1-51-10
Numero di pagine10
RivistaTHE ASTROPHYSICAL JOURNAL
Volume856
Stato di pubblicazionePublished - 2018

Fingerprint

liquid sloshing
magnetic disks
flares
pre-main sequence stars
oscillation
tubes
plasma
stars
oscillations
x rays
spectrometer
hydrodynamics
modeling
imaging spectrometers
light curve
charge coupled devices
echoes
sun
heat
radii

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cita questo

Reale, F., Flaccomio, E., Petralia, A., Sciortino, S., Reale, F., & Lopez-Santiago, J. (2018). X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region. THE ASTROPHYSICAL JOURNAL, 856, 51-1-51-10.

X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region. / Reale, Fabio; Flaccomio, Ettore; Petralia, Antonino; Sciortino, Salvatore; Reale, Fabio; Lopez-Santiago, Javier.

In: THE ASTROPHYSICAL JOURNAL, Vol. 856, 2018, pag. 51-1-51-10.

Risultato della ricerca: Article

Reale, F, Flaccomio, E, Petralia, A, Sciortino, S, Reale, F & Lopez-Santiago, J 2018, 'X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region', THE ASTROPHYSICAL JOURNAL, vol. 856, pagg. 51-1-51-10.
Reale, Fabio ; Flaccomio, Ettore ; Petralia, Antonino ; Sciortino, Salvatore ; Reale, Fabio ; Lopez-Santiago, Javier. / X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region. In: THE ASTROPHYSICAL JOURNAL. 2018 ; Vol. 856. pagg. 51-1-51-10.
@article{40de1f0c701845ef8d286742ab4513b7,
title = "X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region",
abstract = "Pulsing X-ray emission tracks the plasma {"}echo{"} traveling in an extremely long magnetic tube that flares in an Orion pre-main sequence (PMS) star. On the Sun, flares last from minutes to a few hours and the longest-lasting ones typically involve arcades of closed magnetic tubes. Long-lasting X-ray flares are observed in PMS stars. Large-amplitude (∼20{\%}), long-period (∼3 hr) pulsations are detected in the light curve of day-long flares observed by the Advanced CCD Imaging Spectrometer on-board Chandra from PMS stars in the Orion cluster. Detailed hydrodynamic modeling of two flares observed on V772 Ori and OW Ori shows that these pulsations may track the sloshing of plasma along a single long magnetic tube, triggered by a sufficiently short (∼1 hr) heat pulse. These magnetic tubes are ≥20 solar radii long, enough to connect the star with the surrounding disk.",
author = "Fabio Reale and Ettore Flaccomio and Antonino Petralia and Salvatore Sciortino and Fabio Reale and Javier Lopez-Santiago",
year = "2018",
language = "English",
volume = "856",
pages = "51--1--51--10",
journal = "THE ASTROPHYSICAL JOURNAL",
issn = "0004-637X",

}

TY - JOUR

T1 - X-Ray Flare Oscillations Track Plasma Sloshing along Star-disk Magnetic Tubes in the Orion Star-forming Region

AU - Reale, Fabio

AU - Flaccomio, Ettore

AU - Petralia, Antonino

AU - Sciortino, Salvatore

AU - Reale, Fabio

AU - Lopez-Santiago, Javier

PY - 2018

Y1 - 2018

N2 - Pulsing X-ray emission tracks the plasma "echo" traveling in an extremely long magnetic tube that flares in an Orion pre-main sequence (PMS) star. On the Sun, flares last from minutes to a few hours and the longest-lasting ones typically involve arcades of closed magnetic tubes. Long-lasting X-ray flares are observed in PMS stars. Large-amplitude (∼20%), long-period (∼3 hr) pulsations are detected in the light curve of day-long flares observed by the Advanced CCD Imaging Spectrometer on-board Chandra from PMS stars in the Orion cluster. Detailed hydrodynamic modeling of two flares observed on V772 Ori and OW Ori shows that these pulsations may track the sloshing of plasma along a single long magnetic tube, triggered by a sufficiently short (∼1 hr) heat pulse. These magnetic tubes are ≥20 solar radii long, enough to connect the star with the surrounding disk.

AB - Pulsing X-ray emission tracks the plasma "echo" traveling in an extremely long magnetic tube that flares in an Orion pre-main sequence (PMS) star. On the Sun, flares last from minutes to a few hours and the longest-lasting ones typically involve arcades of closed magnetic tubes. Long-lasting X-ray flares are observed in PMS stars. Large-amplitude (∼20%), long-period (∼3 hr) pulsations are detected in the light curve of day-long flares observed by the Advanced CCD Imaging Spectrometer on-board Chandra from PMS stars in the Orion cluster. Detailed hydrodynamic modeling of two flares observed on V772 Ori and OW Ori shows that these pulsations may track the sloshing of plasma along a single long magnetic tube, triggered by a sufficiently short (∼1 hr) heat pulse. These magnetic tubes are ≥20 solar radii long, enough to connect the star with the surrounding disk.

UR - http://hdl.handle.net/10447/339475

UR - http://iopscience.iop.org/article/10.3847/1538-4357/aaaf1f/pdf

M3 - Article

VL - 856

SP - 51-1-51-10

JO - THE ASTROPHYSICAL JOURNAL

JF - THE ASTROPHYSICAL JOURNAL

SN - 0004-637X

ER -