Polarization of gamma-ray bursts via scattering off a relativistic sheath

被引：39

作者：

Eichler, D ^{[1
]}

Levinson, A

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 596卷 / 02期

基金：

以色列科学基金会;

关键词：

black hole physics; gamma rays : bursts; gamma rays : theory;

D O I：

10.1086/379313

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Gamma-ray burst fireballs could be ensheathed by a relativistic, baryon-enriched outflow that would in selected directions scatter a polarized beam of gamma rays. The strong polarization recently announced by RHESSI is attainable by the scattering mechanism, although not most of the time. The scattering mechanism, when acting in addition to the synchrotron mechanism, could circumvent some of the predictions implied by a purely synchrotron origin for the polarization. The time profile of the scattered component could differ from that of the primary gamma rays.

引用

页码：L147 / L150

页数：4

共 12 条

[1] INVERSE COMPTON-SCATTERING OF AMBIENT RADIATION BY A COLD RELATIVISTIC JET - A SOURCE OF BEAMED, POLARIZED CONTINUUM IN BLAZARS [J].

BEGELMAN, MC ;

SIKORA, M .

ASTROPHYSICAL JOURNAL, 1987, 322 (02) :650-661

[2] Polarization of the prompt γ-ray emission from the γ-ray burst of 6 December 2002 [J].

Coburn, W ;

Boggs, SE .

NATURE, 2003, 423 (6938) :415-417

[3] MODEL FOR THE HIGH-ENERGY EMISSION FROM BLAZARS [J].

DERMER, CD ;

SCHLICKEISER, R .

ASTROPHYSICAL JOURNAL, 1993, 416 (02) :458-484

[4] A compact fireball model of gamma-ray bursts [J].

Eichler, D ;

Levinson, A .

ASTROPHYSICAL JOURNAL, 2000, 529 (01) :146-150

[5] Shading and smothering of gamma-ray bursts [J].

Eichler, D ;

Levinson, A .

ASTROPHYSICAL JOURNAL, 1999, 521 (02) :L117-L120

[6] Compton-dragged gamma-ray bursts associated with supernovae [J].

Lazzati, D ;

Ghisellini, G ;

Celotti, A ;

Rees, MJ .

ASTROPHYSICAL JOURNAL, 2000, 529 (01) :L17-L20

[7] BARYON PURITY IN COSMOLOGICAL GAMMA-RAY BURSTS AS A MANIFESTATION OF EVENT HORIZONS [J].

LEVINSON, A ;

EICHLER, D .

ASTROPHYSICAL JOURNAL, 1993, 418 (01) :386-390

[8] Hydrodynamic collimation of gamma-ray-burst fireballs [J].

Levinson, A ;

Eichler, D .

PHYSICAL REVIEW LETTERS, 2000, 85 (02) :236-239

[9] Baryon loading of gamma-ray burst by neutron pickup [J].

Levinson, A ;

Eichler, D .

ASTROPHYSICAL JOURNAL, 2003, 594 (01) :L19-L22

[10] SEMIDYNAMICAL MODELS OF RADIO JETS - RELATIVISTIC BEAMING AND SOURCE COUNTS [J].

LIND, KR ;

BLANDFORD, RD .

ASTROPHYSICAL JOURNAL, 1985, 295 (02) :358-367

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