1998A&A...336L..95P

Query : 1998A&A...336L..95P

1998A&A...336L..95P - Astronomy and Astrophysics, volume 336, L95-99 (1998/8-3)

Optical and near-infrared follow-up observations of GRB 980329.

PALAZZI E., PIAN E., MASETTI N., NICASTRO L., VREESWIJK P., GALAMA T.J., GROOT P., FRONTERA F., DELLA VALLE M., LIDMAN C., KOUVELIOTOU C., PIZZICHINI G., VAN PARADIJS J., PEDERSEN H., MANNUCCI F., DI MARTINO M., DIERCKS A.H., DEUTSCH E.W., AMATI L., BENETTI S., CASTRO-TIRADO A.J., CLASEN J., COSTA E., DAL FIUME D., FALOMO R., FEROCI M., FYNBO J., HEISE J., IN'T ZAND J.J.M., PIRO L., ROBINSON C., TORNIKOSKI M., VALTAOJA E., ZAPATERO-OSORIO M.R., LAMB D., QUASHNOCK J. and VANDEN BERK D.

Abstract (from CDS):

We imaged the field of GRB 980329 in the optical and in the near-infrared starting 20 hours after the event, at the ESO NTT, at the NOT, at the APO and at the TIRGO. In the first night we detect an object of R=23.6±0.2 within the BeppoSAX NFI error box at the same position as a transient VLA source proposed as the radio afterglow of this GRB. The source faded by 1.6±0.5 magnitudes in 2.1 days, similarly to the decays of previous GRB optical afterglows. This transient is likely the optical counterpart of GRB 980329. In the near-infrared we detect signal at 2-σ significance, whose position is only marginally consistent with that of the VLA source. The spectrum of the transient bears the signatures of substantial absorption within the GRB host galaxy. The afterglow energetics are interpreted as synchrotron radiation from an expanding blast wave.

Abstract Copyright: ∼

Journal keyword(s): gamma-rays: bursts - radiation mechanisms: non thermal

Simbad objects: 4

View the references in ADS

Number of rows : 4

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	GRB 970508	gB	06 53 49.2	+79 16 19						~	868	1
2	GRB 980329	gB	07 02 41	+38 50.7						~	273	1
3	HD 80145	*	09 19 27.5787600120	+43 31 45.590071980		9.73	9.70			B9V	10	0
4	V* UY Sex	HS*	10 50 02.8265487864	-00 00 36.879009588	12.063	13.184	13.474	13.606	13.769	sdO9VIIHe6	166	0

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