First Performance of the GOLF-NG Instrumental Prototype Observing the Sun in Tenerife

Salabert, D.; Turck-Chièze, S.; Barrière, J. C.; Carton, P. H.; Daniel-Thomas, P.; Delbart, A.; García, R. A.; Granelli, R.; Jiménez-Reyes, S. J.; Lahonde-Hamdoun, C.; Loiseau, D.; Mathur, S.; Nunio, F.; Pallé, P. L.; Piret, Y.; Robillot, J. M.; Simoniello, R.
Referencia bibliográfica

Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21 ASP Conference Series, Vol. 416, proceedings of a conference held 11-15 August 2008 at the High Altitude Observatory, Boulder, Colorado, USA. Edited by Mausumi Dikpati, Torben Arentoft, Irene González Hernández, Charles Lindsey, and Frank Hill. San Francisco: Astronomical Society of the Pacific, 2009., p.341

Fecha de publicación:
12
2009
Número de autores
17
Número de autores del IAC
0
Número de citas
5
Número de citas referidas
2
Descripción
The primary challenge of Global Oscillations at Low Frequency New Generation (GOLF-NG) is the detection of the low-frequency solar gravity and acoustic modes, as well as the possibility to measure the high-frequency chromospheric modes. On June 8th 2008, the first sunlight observations with the multichannel resonant GOLF-NG prototype spectrometer were obtained at the Observatorio del Teide (Tenerife). The instrument performs integrated (Sun-as-a-star), Doppler velocity measurements, simultaneously at eight different heights in the D1 sodium line profile, corresponding to photospheric and chromospheric layers of the solar atmosphere. In order to study its performance, to validate the conceived strategy, and to estimate the necessary improvements, this prototype has been running on a daily basis over the whole summer of 2008 at the Observatorio del Teide. We present here the results of the first GOLF-NG observations, clearly showing the characteristics of the 5-minute oscillatory signal at different heights in the solar atmosphere. We compare these signals with simultaneous observations from Global Oscillations at Low Frequency (GOLF)/SoHO and from the Mark-I instrument—a node of the Birmingham Solar Oscillations Network (BiSON) network, operating at the same site.