Mejia,J., Galvis-Alonso,O.Y., Braga,J., Corrêa,R., Leite,J.P., Simões,M.V.
Single-photon emission computed tomography (SPECT) is a non-invasive imaging technique, which provides information reporting the functional states of tissues. SPECT imaging has been used as a...
Pélangeon, A., Nakagawa, Y. E., Hurley, K., Yoshida, A., Vanderspek, R., ...
Aims: Taking advantage of the forthcoming Catalog of the HETE-2 mission, the aim of this paper is to evaluate the main properties of HETE-2 GRBs - the E_peak, the T_90 and the E_iso - in their source...
Pélangeon, A., Nakagawa, Y. E., Hurley, K., Yoshida, A., Vanderspek, R., ...
Aims: Taking advantage of the forthcoming Catalog of the HETE-2 mission, the aim of this paper is to evaluate the main properties of HETE-2 GRBs - the E_peak, the T_90 and the E_iso - in their source...
Pélangeon, A., Nakagawa, Y. E., Hurley, K., Yoshida, A., Vanderspek, R., ...
Aims: Taking advantage of the forthcoming Catalog of the HETE-2 mission, the aim of this paper is to evaluate the main properties of HETE-2 GRBs - the E_peak, the T_90 and the E_iso - in their source...
Aguirre, J, Martin, J, Braga, J, Betzler, C, Berning, B, Buckeridge, J
Sessile barnacle assemblages, dominated by Concavus concavus (Bronn) and Balanus perforatus Bruguière, are very abundant in the Lower Pliocene deposits of the Almería-Níjar and Carboneras basins...
A stochastic view of spliceosome assembly and recycling in the nucleus (2007)
Rino, J., Carvalho, T., Braga, J., Desterro, J. M., Luehrmann, R., Carmo-Fonseca, M.
Commission 44: space & high energy astrophysics (2007)
Okuda, Haruyuki, Hasinger, Günther, Arnaud, M. D., Bludman, S., Braga, J., Brosch, N., ...
X-ray Flashes or soft Gamma-ray Bursts? The case of the likely distant XRF 040912 (2006)
Stratta, G., Basa, S., Butler, N., Atteia, J. L., Gendre, B., Pelangeon, A., ...
In this work, we present a multi-wavelength study of XRF 040912, aimed at measuring its distance scale and the intrinsic burst properties. We performed a detailed spectral and temporal analysis of...
Donaghy, T. Q., Lamb, D. Q., Sakamoto, T., Norris, J. P., Nakagawa, Y., Villasenor, J., ...
Here we report the localizations and properties of four short-duration GRBs localized by the High Energy Transient Explorer 2 satellite (HETE-2): GRBs 010326B, 040802, 051211 and 060121, all of which...
Environmental significance of microbialites in reef environments during the last deglaciation (2006)
CAMOIN, G, CABIOCH, G, EISENHAUER, A, BRAGA, J, HAMELIN, B, LERICOLAIS, Gilles
In situ microbialites occurring in reef rocks dredged between 80 and 130 in water depth on the modern fore-reef slopes of Tahiti and the Marquesas islands yield ages ranging from 17,100 2900 to 4410...
Global Characteristics of X-Ray Flashes and X-Ray-Rich GRBs Observed by HETE-2 (2006)
Sakamoto, T., Lamb, D. Q., Graziani, C., Donaghy, T. Q., Suzuki, M., Ricker, G., ...
We describe and discuss the global properties of 45 gamma-ray bursts (GRBs) observed by HETE-2 during the first three years of its mission, focusing on the properties of X-Ray Flashes (XRFs) and...
Discovery of the short gamma-ray burst GRB 050709 (2005)
Villasenor, J. S., Lamb, D. Q., Ricker, G. R., Kawai, N., Butler, N., ...
Gamma-Ray Bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming...
Discovery of the short gamma-ray burst GRB 050709 (2005)
Villasenor, J. S., Lamb, D. Q., Ricker, G. R., Kawai, N., Butler, N., ...
Gamma-ray bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in starforming...
HETE-2 Observation of two gamma-ray bursts at z > 3 (2005)
Kawai, N., Vanderspek, R., Pizzichini, G., Ricker, G. R., Barraud, C., ...
GRB 020124 and GRB 030323 constitute half the sample of gamma-ray bursts with a measured redshift greater than 3. This paper presents the temporal and spectral properties of these two gamma-ray...
HETE-2 Observation of two gamma-ray bursts at z > 3 (2005)
Kawai, N., Vanderspek, R., Pizzichini, G., Ricker, G. R., Barraud, C., ...
GRB 020124 and GRB 030323 constitute half the sample of gamma-ray bursts with a measured redshift greater than 3. This paper presents the temporal and spectral properties of these two gamma-ray...
HETE-2 Observation of two gamma-ray bursts at z > 3 (2005)
Kawai, N., Vanderspek, R., Pizzichini, G., Ricker, G. R., Barraud, C., ...
GRB 020124 and GRB 030323 constitute half the sample of gamma-ray bursts with a measured redshift greater than 3. This paper presents the temporal and spectral properties of these two gamma-ray...
HETE-2 Observation of two gamma-ray bursts at z > 3 (2005)
Kawai, N., Vanderspek, R., Pizzichini, G., Ricker, G. R., Barraud, C., ...
GRB 020124 and GRB 030323 constitute half the sample of gamma-ray bursts with a measured redshift greater than 3. This paper presents the temporal and spectral properties of these two gamma-ray...
Global Characteristics of X-Ray Flashes and X-Ray-Rich GRBs Observed by HETE-2 (2004)
Sakamoto, T., Lamb, D. Q., Graziani, C., Donaghy, T. Q., Suzuki, M., Ricker, G., ...
We describe and discuss the global properties of 45 gamma-ray bursts (GRBs) observed by HETE-2 during the first three years of its mission, focusing on the properties of X-Ray Flashes (XRFs) and...
High Energy Observations of XRF 030723: Evidence for an Off-axis Gamma-Ray Burst? (2004)
Butler, N. R., Sakamoto, T., Suzuki, M., Kawai, N., Lamb, D. Q., Graziani, C., ...
We report High Energy Transient Explorer 2 (HETE-2) Wide Field X-ray Monitor/French Gamma Telescope observations of XRF030723 along with observations of the XRF afterglow made using the 6.5m Magellan...
Vanderspek, R., Sakamoto, T., Barraud, C., Tamagawa, T., Graziani, C., Suzuki, M., ...
An exceptionally intense gamma-ray burst, GRB030329, was detected and localized by the instruments on board the High Energy Transient Explorer satellite (HETE) at 11:37:14 UT on 29 March 2003. The...
Global Characteristics of X-Ray Flashes and X-Ray-Rich GRBs Observed by HETE-2 (2004)
Sakamoto, T., Lamb, D. Q., Graziani, C., Donaghy, T. Q., Suzuki, M., Ricker, G., ...
We describe and discuss the global properties of 45 gamma-ray bursts (GRBs) observed by HETE-2 during the first three years of its mission, focusing on the properties of X-Ray Flashes (XRFs) and...
Global Characteristics of X-Ray Flashes and X-Ray-Rich GRBs Observed by HETE-2 (2004)
Sakamoto, T., Lamb, D. Q., Graziani, C., Donaghy, T. Q., Suzuki, M., Ricker, G., ...
We describe and discuss the global properties of 45 gamma-ray bursts (GRBs) observed by HETE-2 during the first three years of its mission, focusing on the properties of X-Ray Flashes (XRFs) and...
Highlights of the HETE-2 Mission (2003)
Lamb, D. Q., Ricker, G. R., Barraud, C., Boer, M., Braga, J., ...
The HETE-2 mission has been highly productive. It has observed more than 250 GRBs so far. It is currently localizing 25 - 30 GRBs per year, and has localized 43 GRBs to date. Twenty-one of these...
HETE-2 Observations of the Extremely Soft X-Ray Flash XRF 020903 (2003)
Sakamoto, T., Lamb, D. Q., Graziani, C., Donaghy, T. Q., Suzuki, M., Ricker, G., ...
We report HETE-2 WXM/FREGATE observations of the X-ray flash, XRF 020903. This event was extremely soft: the ratio log(S_X/S_gamma) = 0.7, where S_X and S_gamma are the fluences in the 2-30 and...
Scientific Highlights of the HETE-2 Mission (2003)
Lamb, D. Q., Ricker, G. R., Atteia, J-L., Barraud, C., Boer, M., Braga, J., ...
The HETE-2 mission has been highly productive. It has observed more than 250 GRBs so far. It is currently localizing 25 - 30 GRBs per year, and has localized 43 GRBs to date. Twenty-one of these...
HETE-2 Localization and Observation of the Bright, X-Ray-Rich Gamma-Ray Burst GRB021211 (2003)
Crew, G. B., Lamb, D. Q., Ricker, G. R., Kawai, N., Vanderspek, R., ...
A bright, x-ray-rich GRB was detected by HETE-2 at 11:18:34.03 UT on 11 Dec 2002. The WXM localization was to 14' and relayed to the GCN 22 s after the start of the burst. The ground SXC localization...
Mirax: A Brazilian X-Ray Astronomy Satellite Mission (2003)
Braga, J., Rothschild, R., Heise, J., Staubert, R., Remillard, R., D'Amico, F., ...
We describe the ``Monitor e Imageador de Raios-X'' (MIRAX), an X-ray astronomy satellite mission proposed by the high energy astrophysics group at the National Institute for Space Research (INPE) in...
HETE-2 Localization and Observations of the Short, Hard Gamma-Ray Burst GRB020531 (2002)
Lamb, D. Q., Ricker, G. R., Hurley, K., Kawai, N., Shirasaki, Y., ...
The {\it HETE-2} (hereafter \HETE) French Gamma Telescope (FREGATE) and the Wide-field X-ray Monitor (WXM) instruments detected a short ($t_{50} = 360$ msec in the FREGATE 85-300 keV energy band),...
GRB010921: Localization and Observations by the HETE Satellite (2002)
Ricker, G., Hurley, K., Lamb, D., Woosley, S., Atteia, J-L, Kawai, N., ...
On September 21 at 18950.56 SOD (05:15:50.56) UT the FREGATE gamma-ray instrument on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the...
RTL Guided Random-Pattern-Resistant Fault Detection and Low Energy BIST (2001)
M. B. Santos, J. Braga, P. Coimbrão, J. P. Teixeira, S. Manich, L. Balado
The purpose of this paper is to present a methodology for low-energy BIST, in which a loosely deterministic test pattern is generated using RTL functional description. Using the high correlation...
Attitude Control System of the MASCO Balloon-Borne Gamma Ray Telescope. (1997)
Schäfer, B., Fonseca, R.A.(1), Villela, T.(1), DeSouza, P.N.(1), Correa, R.V.(1), Alves, A.M.(1), ...
We describe the attitude control system of the MASCO experiment. The MASCO project is a balloon-borne gamma ray telescope in final phase of development at the National Institute for Space Research...