Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow

K. Y. Huang; Y. Urata; P. H. Kuo; W. H. Ip; K. Ioka; T. Aoki; C. W. Chen; W. P. Chen; M. Isogai; H. C. Lin; K. Makishima; H. Mito; T. Miyata; Y. Nakada; S. Nishiura; K. Onda; Y. Qiu; T. Soyano; T. Tamagawa; K. Tarusawa; M. Tashiro; T. Yoshioka

doi:10.1086/510737

Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow

K. Y. Huang, Y. Urata, P. H. Kuo, W. H. Ip, K. Ioka, T. Aoki, C. W. Chen, W. P. Chen, M. Isogai, H. C. Lin, K. Makishima, H. Mito, T. Miyata, Y. Nakada, S. Nishiura, K. Onda, Y. Qiu, T. Soyano, T. Tamagawa, K. TarusawaM. Tashiro, T. Yoshioka

Graduate Institute of Astronomy

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Abstract

Multiwavelength observations of the optical afterglow of GRB 050319 were performed from 1.31 to 9.92 hr after the burst. Our R-band light curves, combined with other published data, can be described by the smooth broken power-law function, with α₁ = -0.84 ± 0.02 to α₂ = -0.48 ± 0.03, 0.04 days after the gamma-ray burst. The optical light curves are characterized by shallow decays - as was also observed in the X-rays - which may have a similar origin, related to energy injection. However, our observations indicate that there is still a puzzle concerning the chromatic breaks in the R-band light curve (at 0.04 days) and the X-ray light curve (at 0.004 days) that remains to be solved.

Original language	English
Pages (from-to)	L25-L28
Journal	Astrophysical Journal
Volume	654
Issue number	1 II
DOIs	https://doi.org/10.1086/510737
State	Published - 1 Jan 2007

Keywords

Gamma rays: bursts

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10.1086/510737

Light-curve data for GRB 050319
Huang, K. Y. (Creator), Urata, Y. (Creator), Kuo, P. H. (Creator), Ip, W. (Creator), Ioka, K. (Creator), Aoki, T. (Creator), Chen, C. W. (Creator), Chen, W. (Creator), Isogai, M. (Creator), Lin, H. C. (Creator), Makishima, K. (Creator), Mito, H. (Creator), Miyata, T. (Creator), Nakada, Y. (Creator), Nishiura, S. (Creator), Onda, K. (Creator), Qiu, Y. (Creator), Soyano, T. (Creator), Tamagawa, T. (Creator), Tarusawa, K. (Creator), Tashiro, M. (Creator) & Yoshioka, T. (Creator), Centre de Donnees Strasbourg (CDS), 2008
DOI: 10.26093/cds/vizier.16549025, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/654/L25
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Huang, K. Y., Urata, Y., Kuo, P. H., Ip, W. H., Ioka, K., Aoki, T., Chen, C. W., Chen, W. P., Isogai, M., Lin, H. C., Makishima, K., Mito, H., Miyata, T., Nakada, Y., Nishiura, S., Onda, K., Qiu, Y., Soyano, T., Tamagawa, T., ... Yoshioka, T. (2007). Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow. Astrophysical Journal, 654(1 II), L25-L28. https://doi.org/10.1086/510737

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title = "Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow",

abstract = "Multiwavelength observations of the optical afterglow of GRB 050319 were performed from 1.31 to 9.92 hr after the burst. Our R-band light curves, combined with other published data, can be described by the smooth broken power-law function, with α1 = -0.84 ± 0.02 to α2 = -0.48 ± 0.03, 0.04 days after the gamma-ray burst. The optical light curves are characterized by shallow decays - as was also observed in the X-rays - which may have a similar origin, related to energy injection. However, our observations indicate that there is still a puzzle concerning the chromatic breaks in the R-band light curve (at 0.04 days) and the X-ray light curve (at 0.004 days) that remains to be solved.",

keywords = "Gamma rays: bursts",

author = "Huang, {K. Y.} and Y. Urata and Kuo, {P. H.} and Ip, {W. H.} and K. Ioka and T. Aoki and Chen, {C. W.} and Chen, {W. P.} and M. Isogai and Lin, {H. C.} and K. Makishima and H. Mito and T. Miyata and Y. Nakada and S. Nishiura and K. Onda and Y. Qiu and T. Soyano and T. Tamagawa and K. Tarusawa and M. Tashiro and T. Yoshioka",

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Huang, KY, Urata, Y, Kuo, PH, Ip, WH, Ioka, K, Aoki, T, Chen, CW, Chen, WP, Isogai, M, Lin, HC, Makishima, K, Mito, H, Miyata, T, Nakada, Y, Nishiura, S, Onda, K, Qiu, Y, Soyano, T, Tamagawa, T, Tarusawa, K, Tashiro, M & Yoshioka, T 2007, 'Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow', Astrophysical Journal, vol. 654, no. 1 II, pp. L25-L28. https://doi.org/10.1086/510737

TY - JOUR

T1 - Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow

AU - Huang, K. Y.

AU - Urata, Y.

AU - Kuo, P. H.

AU - Ip, W. H.

AU - Ioka, K.

AU - Aoki, T.

AU - Chen, C. W.

AU - Chen, W. P.

AU - Isogai, M.

AU - Lin, H. C.

AU - Makishima, K.

AU - Mito, H.

AU - Miyata, T.

AU - Nakada, Y.

AU - Nishiura, S.

AU - Onda, K.

AU - Qiu, Y.

AU - Soyano, T.

AU - Tamagawa, T.

AU - Tarusawa, K.

AU - Tashiro, M.

AU - Yoshioka, T.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Multiwavelength observations of the optical afterglow of GRB 050319 were performed from 1.31 to 9.92 hr after the burst. Our R-band light curves, combined with other published data, can be described by the smooth broken power-law function, with α1 = -0.84 ± 0.02 to α2 = -0.48 ± 0.03, 0.04 days after the gamma-ray burst. The optical light curves are characterized by shallow decays - as was also observed in the X-rays - which may have a similar origin, related to energy injection. However, our observations indicate that there is still a puzzle concerning the chromatic breaks in the R-band light curve (at 0.04 days) and the X-ray light curve (at 0.004 days) that remains to be solved.

AB - Multiwavelength observations of the optical afterglow of GRB 050319 were performed from 1.31 to 9.92 hr after the burst. Our R-band light curves, combined with other published data, can be described by the smooth broken power-law function, with α1 = -0.84 ± 0.02 to α2 = -0.48 ± 0.03, 0.04 days after the gamma-ray burst. The optical light curves are characterized by shallow decays - as was also observed in the X-rays - which may have a similar origin, related to energy injection. However, our observations indicate that there is still a puzzle concerning the chromatic breaks in the R-band light curve (at 0.04 days) and the X-ray light curve (at 0.004 days) that remains to be solved.

KW - Gamma rays: bursts

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U2 - 10.1086/510737

DO - 10.1086/510737

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SN - 0004-637X

VL - 654

SP - L25-L28

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

Multicolor shallow decay and chromatic breaks in the GRB 050319 optical afterglow

Abstract

Keywords

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Datasets

Light-curve data for GRB 050319

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