A new astrophysics mission for a Low Energy Gamma-ray burst Observatory (LEGO)
We propose a new astrophysics space mission for a Low Energy Gamma-ray-burst Observatory (LEGO) that will fit the envelope of a small-explorer (SMEX) type mission. The LEGO instrument combines silicon pixel detectors with ultra-high energy resolution and a novel cost effective fine-pitch coded mask, to image the sky with sub-arcminute accuracy in the 0.3 - 30 keV range with a wide field-of-view. LEGO is well adapted to study hundreds of short transients such as gamma-ray bursts and soft gamma repeaters in the unexplored energy range below 5 keV. LEGO takes one of the next logical steps in GRB studies in the post-BeppoSAX era by attacking the astrophysics questions raised by recent discoveries of variable radio, optical, and x-ray counterparts to burst sources. In addition to monitoring the sky for gamma-ray bursts, LEGO would provide a first all-sky monitor in the 0.3-30 keV range. LEGO will be sensitive to all mCrab sources in the sky in a day and to 0.1 mCrab sources in a year, and thus, may provide daily light curves and sensitive spectral measurements on about 103 objects and yearly data on an order of magnitude more sources.
Publication Source (Journal or Book title)
Proceedings of SPIE - The International Society for Optical Engineering
Tümer, T., Hurley, K., Ogelman, H., Paulos, R., Puetter, R., Beuville, E., Hartmann, D., Schaefer, B., Preble, J., Rothschild, R., Finger, M., Fabris, L., O'Neill, T., Jennings, M., & Yahil, A. (1997). A new astrophysics mission for a Low Energy Gamma-ray burst Observatory (LEGO). Proceedings of SPIE - The International Society for Optical Engineering, 3114, 429-437. https://doi.org/10.1117/12.283801