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Titolo:
The effect of magnetic fields on gamma-ray bursts inferred from multi-wavelength observations of the burst of 23 January 1999
Autore:
Galama, TJ; Briggs, MS; Wijers, RAMJ; Vreeswijk, PM; Rol, E; Band, D; van Paradijs, J; Kouveliotou, C; Preece, RD; Bremer, M; Smith, IA; Tilanus, RPJ; de Bruyn, AG; Strom, RG; Pooley, G; Castro-Tirado, AJ; Tanvir, N; Robinson, C; Hurley, K; Heise, J; Telting, J; Rutten, RGM; Packham, C; Swaters, R; Davies, JK; Fassia, A; Green, SF; Foster, MJ; Sagar, R; Pandey, AK; Nilakshi; Yadav, RKS; Ofek, EO; Leibowitz, E; Ibbetson, P; Rhoads, J; Falco, E; Petry, C; Impey, C; Geballe, TR; Bhattacharya, D;
Indirizzi:
Univndssterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherla Univ Amsterdam Amsterdam Netherlands NL-1098 SJ 8 SJ Amsterdam, Netherla Ctr High Energy Astrophys, NL-1098 SJ Amsterdam, Netherlands Ctr High Energy Astrophys Amsterdam Netherlands NL-1098 SJ , Netherlands Univ Alabama, Dept Phys, Huntsville, AL 35899 USA Univ Alabama HuntsvilleAL USA 35899 Dept Phys, Huntsville, AL 35899 USA SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA SUNY StonyBrook Stony Brook NY USA 11794 tron, Stony Brook, NY 11794 USA Univ Calif San Diego, CASS, La Jolla, CA 92093 USA Univ Calif San Diego La Jolla CA USA 92093 , CASS, La Jolla, CA 92093 USA NASA, MSFC, Huntsville, AL 35812 USA NASA Huntsville AL USA 35812NASA, MSFC, Huntsville, AL 35812 USA Univ Space Res Assoc, Huntsville, AL 35812 USA Univ Space Res Assoc Huntsville AL USA 35812 oc, Huntsville, AL 35812 USA Inst Radio Astron Millimetr, F-38406 St Martin Dheres, France Inst Radio Astron Millimetr St Martin Dheres France F-38406 eres, France Rice Univ, Dept Space Phys & Astron, Houston, TX 77005 USA Rice Univ Houston TX USA 77005 Space Phys & Astron, Houston, TX 77005 USA Joint Astron Ctr, Hilo, HI 96720 USA Joint Astron Ctr Hilo HI USA 96720Joint Astron Ctr, Hilo, HI 96720 USA Netherlands Fdn Res Astron, NL-7990 AA Dwingeloo, Netherlands Netherlands Fdn Res Astron Dwingeloo Netherlands NL-7990 AA Netherlands Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands Kapteyn Astron Inst Groningen Netherlands NL-9700 AV ningen, Netherlands UnivHE,mbridge, Cavendish Lab, Mullard Radio Astron Observ, Cambridge CB3 0 Univ Cambridge Cambridge England CB3 0HE Astron Observ, Cambridge CB3 0 Lab Astrofis Espacial & Fis Fundamental, INTA, E-28080 Madrid, Spain Lab Astrofis Espacial & Fis Fundamental Madrid Spain E-28080 drid, Spain CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain CSIC Granada SpainE-18080 st Astrofis Andalucia, E-18080 Granada, Spain Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England Univ Cambridge Cambridge England CB3 0HA ron, Cambridge CB3 0HA, England Univ Hertfordshire, Dept Phys Sci, Hatfield AL10 9AB, Herts, England Univ Hertfordshire Hatfield Herts England AL10 9AB 10 9AB, Herts, England Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Sci Lab, Berkeley, CA 94720 USA Natl Sci Fdn, Berkeley, CA 94720 USA Natl Sci Fdn Berkeley CA USA 94720Natl Sci Fdn, Berkeley, CA 94720 USA SRON, Space Res Lab, NL-3584 CA Utrecht, Netherlands SRON Utrecht Netherlands NL-3584 CA Lab, NL-3584 CA Utrecht, Netherlands Isaac Newton Grp, E-38780 Santa Cruz De La Palma, Islas Canarias, Spain Isaac Newton Grp Santa Cruz De La Palma Islas Canarias Spain E-38780 pain Univondonon Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, L Univ London Imperial Coll Sci Technol & Med London England SW7 2BZ rp, L UnivT2ent, Phys Lab, Sch Phys Sci, Unit Space Sci & Astrophys, Canterbury C Univ Kent Canterbury Kent England CT2 7NR e Sci & Astrophys, Canterbury C Uttar Pradesh State Observ, Naini Tal 263129, India Uttar Pradesh State Observ Naini Tal India 263129 aini Tal 263129, India Tel Aviv Univ, Wise Observ, IL-69978 Tel Aviv, Israel Tel Aviv Univ Tel Aviv Israel IL-69978 Observ, IL-69978 Tel Aviv, Israel Kitt Peak Natl Observ, Tucson, AZ 85726 USA Kitt Peak Natl Observ Tucson AZ USA 85726 tl Observ, Tucson, AZ 85726 USA Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA Harvard Smithsonian Ctr Astrophys Cambridge MA USA 02138 ge, MA 02138 USA Univ Arizona, Steward Observ, Tucson, AZ 85719 USA Univ Arizona Tucson AZUSA 85719 na, Steward Observ, Tucson, AZ 85719 USA Univ Hawaii, Gemini Observ, Hilo, HI 96720 USA Univ Hawaii Hilo HI USA 96720 v Hawaii, Gemini Observ, Hilo, HI 96720 USA Raman Res Inst, Bangalore 560080, Karnataka, India Raman Res Inst Bangalore Karnataka India 560080 560080, Karnataka, India
Titolo Testata:
NATURE
fascicolo: 6726, volume: 398, anno: 1999,
pagine: 394 - 399
SICI:
0028-0836(19990401)398:6726<394:TEOMFO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
BATSE OBSERVATIONS; RADIO TELESCOPE; PHOTOMETRY; AFTERGLOW; SPECTRA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Galama, TJ Univerdam,rdam, Astron Inst Anton Pannekoek, Kruislaan 403, NL-1098 SJ Amst Univ Amsterdam Kruislaan 403 Amsterdam Netherlands NL-1098 SJ
Citazione:
T.J. Galama et al., "The effect of magnetic fields on gamma-ray bursts inferred from multi-wavelength observations of the burst of 23 January 1999", NATURE, 398(6726), 1999, pp. 394-399

Abstract

Gamma-ray bursts (GRBs) are thought to arise when an extremely relativistic outflow of particles from a massive explosion (the nature of which is still unclear) Interacts with material surrounding the site of the explosion. observations of the evolving changes in emission at many wavelengths allow us to Investigate the origin of the photons, and so potentially determine the nature of the explosion. Here we report the results of gamma-ray, optical, Infrared, submillimetre, millimetre and radio observations of the burst GRB990123 and Its afterglow. Our Interpretation of the data Indicates that the initial and afterglow emissions are associated with three distinct regions In the fireball. The peak flux of the afterglow, one day after the burst, has a lower frequency than observed for other bursts; this explains tbe short-lived radio emission. We suggest that the differences between bursts reflect variations In the magnetic-field strength in the afterglow-emittingregions.

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Documento generato il 26/11/14 alle ore 14:42:02