X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism

Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R

Risultato della ricerca: Other contribution

Abstract

We propose to determine the proper motion of the X-ray source associated with HH 154, the only known protostellar jet in which the X-ray emission mechanism can be studied in detail. Our numerical simulations indicate that the X-rays are produced in a fast-moving (500 km/s) post-shock region, and our HST observations show high proper motion shocked material moving at similar speed. Detection (or lack of) of proper motion of the X-ray source will strongly confirm (or falsify) our model, and constitute the basis for a general theory of X-ray emission in protostellar jets. Understanding and modeling the emission mechanism is key to assess the lifetime of the X-ray emission and thus the influence of X-ray from protostellar jets on the star (and planetary) formation process in general.
Lingua originaleEnglish
Stato di pubblicazionePublished - 2004

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shock
proper motion
x rays
stars
life (durability)
simulation

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Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R (2004). X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism.

X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism. / Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R.

2004, .

Risultato della ricerca: Other contribution

Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R 2004, X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism..
Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R. X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism. 2004.
Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R. / X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism. 2004.
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title = "X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism",
abstract = "We propose to determine the proper motion of the X-ray source associated with HH 154, the only known protostellar jet in which the X-ray emission mechanism can be studied in detail. Our numerical simulations indicate that the X-rays are produced in a fast-moving (500 km/s) post-shock region, and our HST observations show high proper motion shocked material moving at similar speed. Detection (or lack of) of proper motion of the X-ray source will strongly confirm (or falsify) our model, and constitute the basis for a general theory of X-ray emission in protostellar jets. Understanding and modeling the emission mechanism is key to assess the lifetime of the X-ray emission and thus the influence of X-ray from protostellar jets on the star (and planetary) formation process in general.",
keywords = "hydrodynamics – Herbig-Haro objects – ISM: jets and outflows – X-rays: ISM",
author = "{Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R} and Giovanni Peres and Rosaria Bonito",
year = "2004",
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T1 - X-ray emission from fast moving shocks in the protostellar jet HH 154: a binding diagnostic of the emission mechanism

AU - Favata, Fabio; Micela, Giuseppina; Fridlund, Malcolm; Orlando, Salvatore; Harnden, F. R

AU - Peres, Giovanni

AU - Bonito, Rosaria

PY - 2004

Y1 - 2004

N2 - We propose to determine the proper motion of the X-ray source associated with HH 154, the only known protostellar jet in which the X-ray emission mechanism can be studied in detail. Our numerical simulations indicate that the X-rays are produced in a fast-moving (500 km/s) post-shock region, and our HST observations show high proper motion shocked material moving at similar speed. Detection (or lack of) of proper motion of the X-ray source will strongly confirm (or falsify) our model, and constitute the basis for a general theory of X-ray emission in protostellar jets. Understanding and modeling the emission mechanism is key to assess the lifetime of the X-ray emission and thus the influence of X-ray from protostellar jets on the star (and planetary) formation process in general.

AB - We propose to determine the proper motion of the X-ray source associated with HH 154, the only known protostellar jet in which the X-ray emission mechanism can be studied in detail. Our numerical simulations indicate that the X-rays are produced in a fast-moving (500 km/s) post-shock region, and our HST observations show high proper motion shocked material moving at similar speed. Detection (or lack of) of proper motion of the X-ray source will strongly confirm (or falsify) our model, and constitute the basis for a general theory of X-ray emission in protostellar jets. Understanding and modeling the emission mechanism is key to assess the lifetime of the X-ray emission and thus the influence of X-ray from protostellar jets on the star (and planetary) formation process in general.

KW - hydrodynamics – Herbig-Haro objects – ISM: jets and outflows – X-rays: ISM

UR - http://hdl.handle.net/10447/85413

M3 - Other contribution

ER -