Quark-nova explosion inside a collapsar: application to gamma ray bursts

Rachid Ouyed; Denis Leahy; Jan Staff; Brian Niebergal

doi:10.1155/2009/463521

Quark-nova explosion inside a collapsar: application to gamma ray bursts

Rachid Ouyed, Denis Leahy, Jan Staff, Brian Niebergal

Research output: Contribution to journal › Article › peer-review

Abstract

If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides with the stellar envelope creating an outward moving cap (Γ ∼ 1–10) above the polar funnel. Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star) becomes visible after the cap becomes optically thin. Model features include (i) precursor activity (optical, X-ray, γ-ray), (ii) prompt γ-ray emission, and (iii) afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and nonassociation with star forming regions), dark GRBs, the energetic X-ray flares detected in Swift GRBs, and the near-simultaneous optical and γ-ray prompt emission observed in GRBs in the context of our model.

Original language	English
Pages (from-to)	1-10
Number of pages	10
Journal	Advances in Astronomy
Volume	2
DOIs	https://doi.org/10.1155/2009/463521
Publication status	Published - 2009
Externally published	Yes

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@article{15934e79f65846649cb9e888e3abc848,

title = "Quark-nova explosion inside a collapsar: application to gamma ray bursts",

abstract = "If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides with the stellar envelope creating an outward moving cap (Γ ∼ 1–10) above the polar funnel. Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star) becomes visible after the cap becomes optically thin. Model features include (i) precursor activity (optical, X-ray, γ-ray), (ii) prompt γ-ray emission, and (iii) afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and nonassociation with star forming regions), dark GRBs, the energetic X-ray flares detected in Swift GRBs, and the near-simultaneous optical and γ-ray prompt emission observed in GRBs in the context of our model.",

author = "Rachid Ouyed and Denis Leahy and Jan Staff and Brian Niebergal",

year = "2009",

doi = "10.1155/2009/463521",

language = "English",

volume = "2",

pages = "1--10",

journal = "Advances in Astronomy",

issn = "1687-7969",

publisher = "Hindawi Publishing",

}

TY - JOUR

T1 - Quark-nova explosion inside a collapsar

T2 - application to gamma ray bursts

AU - Ouyed, Rachid

AU - Leahy, Denis

AU - Staff, Jan

AU - Niebergal, Brian

PY - 2009

Y1 - 2009

N2 - If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides with the stellar envelope creating an outward moving cap (Γ ∼ 1–10) above the polar funnel. Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star) becomes visible after the cap becomes optically thin. Model features include (i) precursor activity (optical, X-ray, γ-ray), (ii) prompt γ-ray emission, and (iii) afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and nonassociation with star forming regions), dark GRBs, the energetic X-ray flares detected in Swift GRBs, and the near-simultaneous optical and γ-ray prompt emission observed in GRBs in the context of our model.

AB - If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides with the stellar envelope creating an outward moving cap (Γ ∼ 1–10) above the polar funnel. Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star) becomes visible after the cap becomes optically thin. Model features include (i) precursor activity (optical, X-ray, γ-ray), (ii) prompt γ-ray emission, and (iii) afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and nonassociation with star forming regions), dark GRBs, the energetic X-ray flares detected in Swift GRBs, and the near-simultaneous optical and γ-ray prompt emission observed in GRBs in the context of our model.

U2 - 10.1155/2009/463521

DO - 10.1155/2009/463521

M3 - Article

SN - 1687-7969

VL - 2

SP - 1

EP - 10

JO - Advances in Astronomy

JF - Advances in Astronomy

ER -

Quark-nova explosion inside a collapsar: application to gamma ray bursts

Abstract

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