Decay of the GRB 990123 optical afterglow: Implications for the fireball model

Alberto J. Castro-Tirado; María Rosa Zapatero-Osorio; Nicola Caon; Luz Marina Cairós; Jens Hjorth; Holger Pedersen; Michael I. Andersen; Javier Gorosabel; Corrado Bartolini; Adriano Guarnieri; Adalberto Piccioni; Filippo Frontera; Nicola Masetti; Eliana Palazzi; Elena Pian; Jochen Greiner; Renè Hudec; Ram Sagar; Anil K. Pandey; Vinay Mohan; Ramakant K.S. Yadav; Nilakshi; Gunnlaugur Björnsson; Páll Jakobsson; Ingunn Burud; Frederic Courbin; Gaetano Valentini; Anna Piersimoni; Jésus Aceituno; Luz María Montoya; Santos Pedraz; Roland Gredel; Charles F. Claver; Travis A. Rector; James E. Rhoads; Fabian Walter; Jürgen Ott; Hans Hippelein; Victor Sánchez-Béjar; Carlos Gutiérrez; Alejandro Oscoz; Jin Zhu; Jiansheng Chen; Haotong Zhang; Jianyan Wei; Aiying Zhou; Sergei Guziy; Aleksei Shlyapnikov; John Heise; Enrico Costa; Marco Feroci; Luigi Piro

doi:10.1126/science.283.5410.2069

Decay of the GRB 990123 optical afterglow: Implications for the fireball model

Alberto J. Castro-Tirado, María Rosa Zapatero-Osorio, Nicola Caon, Luz Marina Cairós, Jens Hjorth, Holger Pedersen, Michael I. Andersen, Javier Gorosabel, Corrado Bartolini, Adriano Guarnieri, Adalberto Piccioni, Filippo Frontera, Nicola Masetti, Eliana Palazzi, Elena Pian, Jochen Greiner, Renè Hudec, Ram Sagar, Anil K. Pandey, Vinay MohanRamakant K.S. Yadav, Nilakshi, Gunnlaugur Björnsson, Páll Jakobsson, Ingunn Burud, Frederic Courbin, Gaetano Valentini, Anna Piersimoni, Jésus Aceituno, Luz María Montoya, Santos Pedraz, Roland Gredel, Charles F. Claver, Travis A. Rector, James E. Rhoads, Fabian Walter, Jürgen Ott, Hans Hippelein, Victor Sánchez-Béjar, Carlos Gutiérrez, Alejandro Oscoz, Jin Zhu, Jiansheng Chen, Haotong Zhang, Jianyan Wei, Aiying Zhou, Sergei Guziy, Aleksei Shlyapnikov, John Heise, Enrico Costa, Marco Feroci, Luigi Piro

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Abstract

Broad-band (ultraviolet to near-infrared) observations of the intense gamma ray burst GRB 990123 started ~8.5 hours after the event and continued until 18 February 1999. When combined with other data, in particular from the Robotic Telescope and Transient Source Experiment (ROTSE) and the Hubble Space Telescope (HST), evidence emerges for a smoothly declining light curve, suggesting some color dependence that could be related to a cooling break passing the ultraviolet-optical band at about 1 day after the high-energy event. The steeper decline rate seen after 1.5 to 2 days may be evidence for a collimated jet pointing toward the observer.

Original language	English (US)
Pages (from-to)	2069-2073
Number of pages	5
Journal	Science
Volume	283
Issue number	5410
DOIs	https://doi.org/10.1126/science.283.5410.2069
State	Published - Mar 26 1999
Externally published	Yes

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Castro-Tirado, A. J., Zapatero-Osorio, M. R., Caon, N., Cairós, L. M., Hjorth, J., Pedersen, H., Andersen, M. I., Gorosabel, J., Bartolini, C., Guarnieri, A., Piccioni, A., Frontera, F., Masetti, N., Palazzi, E., Pian, E., Greiner, J., Hudec, R., Sagar, R., Pandey, A. K., ... Piro, L. (1999). Decay of the GRB 990123 optical afterglow: Implications for the fireball model. Science, 283(5410), 2069-2073. https://doi.org/10.1126/science.283.5410.2069

Castro-Tirado, AJ, Zapatero-Osorio, MR, Caon, N, Cairós, LM, Hjorth, J, Pedersen, H, Andersen, MI, Gorosabel, J, Bartolini, C, Guarnieri, A, Piccioni, A, Frontera, F, Masetti, N, Palazzi, E, Pian, E, Greiner, J, Hudec, R, Sagar, R, Pandey, AK, Mohan, V, Yadav, RKS, Nilakshi, Björnsson, G, Jakobsson, P, Burud, I, Courbin, F, Valentini, G, Piersimoni, A, Aceituno, J, Montoya, LM, Pedraz, S, Gredel, R, Claver, CF, Rector, TA, Rhoads, JE, Walter, F, Ott, J, Hippelein, H, Sánchez-Béjar, V, Gutiérrez, C, Oscoz, A, Zhu, J, Chen, J, Zhang, H, Wei, J, Zhou, A, Guziy, S, Shlyapnikov, A, Heise, J, Costa, E, Feroci, M & Piro, L 1999, 'Decay of the GRB 990123 optical afterglow: Implications for the fireball model', Science, vol. 283, no. 5410, pp. 2069-2073. https://doi.org/10.1126/science.283.5410.2069

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title = "Decay of the GRB 990123 optical afterglow: Implications for the fireball model",

abstract = "Broad-band (ultraviolet to near-infrared) observations of the intense gamma ray burst GRB 990123 started ~8.5 hours after the event and continued until 18 February 1999. When combined with other data, in particular from the Robotic Telescope and Transient Source Experiment (ROTSE) and the Hubble Space Telescope (HST), evidence emerges for a smoothly declining light curve, suggesting some color dependence that could be related to a cooling break passing the ultraviolet-optical band at about 1 day after the high-energy event. The steeper decline rate seen after 1.5 to 2 days may be evidence for a collimated jet pointing toward the observer.",

author = "Castro-Tirado, {Alberto J.} and Zapatero-Osorio, {Mar{\'i}a Rosa} and Nicola Caon and Cair{\'o}s, {Luz Marina} and Jens Hjorth and Holger Pedersen and Andersen, {Michael I.} and Javier Gorosabel and Corrado Bartolini and Adriano Guarnieri and Adalberto Piccioni and Filippo Frontera and Nicola Masetti and Eliana Palazzi and Elena Pian and Jochen Greiner and Ren{\`e} Hudec and Ram Sagar and Pandey, {Anil K.} and Vinay Mohan and Yadav, {Ramakant K.S.} and Nilakshi and Gunnlaugur Bj{\"o}rnsson and P{\'a}ll Jakobsson and Ingunn Burud and Frederic Courbin and Gaetano Valentini and Anna Piersimoni and J{\'e}sus Aceituno and Montoya, {Luz Mar{\'i}a} and Santos Pedraz and Roland Gredel and Claver, {Charles F.} and Rector, {Travis A.} and Rhoads, {James E.} and Fabian Walter and J{\"u}rgen Ott and Hans Hippelein and Victor S{\'a}nchez-B{\'e}jar and Carlos Guti{\'e}rrez and Alejandro Oscoz and Jin Zhu and Jiansheng Chen and Haotong Zhang and Jianyan Wei and Aiying Zhou and Sergei Guziy and Aleksei Shlyapnikov and John Heise and Enrico Costa and Marco Feroci and Luigi Piro",

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doi = "10.1126/science.283.5410.2069",

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T1 - Decay of the GRB 990123 optical afterglow

T2 - Implications for the fireball model

AU - Castro-Tirado, Alberto J.

AU - Zapatero-Osorio, María Rosa

AU - Caon, Nicola

AU - Cairós, Luz Marina

AU - Hjorth, Jens

AU - Pedersen, Holger

AU - Andersen, Michael I.

AU - Gorosabel, Javier

AU - Bartolini, Corrado

AU - Guarnieri, Adriano

AU - Piccioni, Adalberto

AU - Frontera, Filippo

AU - Masetti, Nicola

AU - Palazzi, Eliana

AU - Pian, Elena

AU - Greiner, Jochen

AU - Hudec, Renè

AU - Sagar, Ram

AU - Pandey, Anil K.

AU - Mohan, Vinay

AU - Yadav, Ramakant K.S.

AU - Nilakshi,

AU - Björnsson, Gunnlaugur

AU - Jakobsson, Páll

AU - Burud, Ingunn

AU - Courbin, Frederic

AU - Valentini, Gaetano

AU - Piersimoni, Anna

AU - Aceituno, Jésus

AU - Montoya, Luz María

AU - Pedraz, Santos

AU - Gredel, Roland

AU - Claver, Charles F.

AU - Rector, Travis A.

AU - Rhoads, James E.

AU - Walter, Fabian

AU - Ott, Jürgen

AU - Hippelein, Hans

AU - Sánchez-Béjar, Victor

AU - Gutiérrez, Carlos

AU - Oscoz, Alejandro

AU - Zhu, Jin

AU - Chen, Jiansheng

AU - Zhang, Haotong

AU - Wei, Jianyan

AU - Zhou, Aiying

AU - Guziy, Sergei

AU - Shlyapnikov, Aleksei

AU - Heise, John

AU - Costa, Enrico

AU - Feroci, Marco

AU - Piro, Luigi

PY - 1999/3/26

Y1 - 1999/3/26

N2 - Broad-band (ultraviolet to near-infrared) observations of the intense gamma ray burst GRB 990123 started ~8.5 hours after the event and continued until 18 February 1999. When combined with other data, in particular from the Robotic Telescope and Transient Source Experiment (ROTSE) and the Hubble Space Telescope (HST), evidence emerges for a smoothly declining light curve, suggesting some color dependence that could be related to a cooling break passing the ultraviolet-optical band at about 1 day after the high-energy event. The steeper decline rate seen after 1.5 to 2 days may be evidence for a collimated jet pointing toward the observer.

AB - Broad-band (ultraviolet to near-infrared) observations of the intense gamma ray burst GRB 990123 started ~8.5 hours after the event and continued until 18 February 1999. When combined with other data, in particular from the Robotic Telescope and Transient Source Experiment (ROTSE) and the Hubble Space Telescope (HST), evidence emerges for a smoothly declining light curve, suggesting some color dependence that could be related to a cooling break passing the ultraviolet-optical band at about 1 day after the high-energy event. The steeper decline rate seen after 1.5 to 2 days may be evidence for a collimated jet pointing toward the observer.

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DO - 10.1126/science.283.5410.2069

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SN - 0036-8075

VL - 283

SP - 2069

EP - 2073

JO - Science

JF - Science

IS - 5410

ER -

Decay of the GRB 990123 optical afterglow: Implications for the fireball model

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