Search

Your search keyword '"Mastropietro M"' showing total 14 results
Start Over Author "Mastropietro M" Database Supplemental Index
14 results on '"Mastropietro M"'

2. First AGILE catalog of high-confidence gamma-ray sources

Author

Pittori, C., Verrecchia, F., Chen, A. W., Bulgarelli, A., Pellizzoni, A., Giuliani, A., Vercellone, S., Longo, F., Tavani, M., Giommi, P., Barbiellini, G., Trifoglio, M., Gianotti, F., Argan, A., Antonelli, A., Boffelli, F., Caraveo, P., Cattaneo, P. W., Cocco, V., Colafrancesco, S., Contessi, T., Costa, E., Cutini, S., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Fanari, G., Feroci, M., Ferrari, A., Fiorini, M., Fornari, F., Fuschino, F., Froysland, T., Frutti, M., Galli, M., Gasparrini, D., Labanti, C., Lapshov, I., Lazzarotto, F., Liello, F., Lipari, P., Mattaini, E., Marisaldi, M., Mastropietro, M., Mauri, A., Mauri, F., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Perotti, F., Piano, G., Picozza, P., Pilia, M., Pontoni, C., Porrovecchio, G., Preger, B., Prest, M., Primavera, R., Pucella, G., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Sabatini, S., Santolamazza, P., Scalise, E., Soffitta, P., Stellato, S., Striani, E., Tamburelli, F., Traci, A., Trois, A., Vallazza, E., Vittorini, V., Zambra, A., Zanello, D., Salotti, L., Pittori, C., Verrecchia, F., Chen, A. W., Bulgarelli, A., Pellizzoni, A., Giuliani, A., Vercellone, S., Longo, F., Tavani, M., Giommi, P., Barbiellini, G., Trifoglio, M., Gianotti, F., Argan, A., Antonelli, A., Boffelli, F., Caraveo, P., Cattaneo, P. W., Cocco, V., Colafrancesco, S., Contessi, T., Costa, E., Cutini, S., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Fanari, G., Feroci, M., Ferrari, A., Fiorini, M., Fornari, F., Fuschino, F., Froysland, T., Frutti, M., Galli, M., Gasparrini, D., Labanti, C., Lapshov, I., Lazzarotto, F., Liello, F., Lipari, P., Mattaini, E., Marisaldi, M., Mastropietro, M., Mauri, A., Mauri, F., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Perotti, F., Piano, G., Picozza, P., Pilia, M., Pontoni, C., Porrovecchio, G., Preger, B., Prest, M., Primavera, R., Pucella, G., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Sabatini, S., Santolamazza, P., Scalise, E., Soffitta, P., Stellato, S., Striani, E., Tamburelli, F., Traci, A., Trois, A., Vallazza, E., Vittorini, V., Zambra, A., Zanello, D., and Salotti, L.

Abstract

We present the first catalog of high-confidence γ-ray sources detected by the AGILE satellite during observations performed from July 9, 2007 to June 30, 2008. Cataloged sources were detected by merging all the available data over the entire time period. AGILE, launched in April 2007, is an ASI mission devoted to γ-ray observations in the 30 MeV–50 GeV energy range, with simultaneous X-ray imaging capability in the 18–60 keV band. This catalog is based on Gamma-Ray Imaging Detector (GRID) data for energies greater than 100 MeV. For the first AGILE catalog, we adopted a conservative analysis, with a high-quality event filter optimized to select γ-ray events within the central zone of the instrument field of view (radius of 40°). This is a significance-limited (4σ) catalog, and it is not a complete flux-limited sample due to the non-uniform first-year AGILE sky coverage. The catalog includes 47 sources, 21 of which are associated with confirmed or candidate pulsars, 13 with blazars (7 FSRQ, 4 BL Lacs, 2 unknown type), 2 with HMXRBs, 2 with SNRs, 1 with a colliding-wind binary system, and 8 with unidentified sources.

Published
2009
Full Text
View/download PDF

3. The AGILE Mission

Author

Tavani, M., Barbiellini, G., Argan, A., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, A. W., Cocco, V., Costa, E., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Fornari, F., Fuschino, F., Froysland, T., Frutti, M., Galli, M., Gianotti, F., Giuliani, A., Labanti, C., Lapshov, I., Lazzarotto, F., Liello, F., Lipari, P., Longo, F., Mattaini, E., Marisaldi, M., Mastropietro, M., Mauri, A., Mauri, F., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pontoni, C., Porrovecchio, G., Prest, M., Pucella, G., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Soffitta, P., Traci, A., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Vittorini, V., Zambra, A., Zanello, D., Pittori, C., Preger, B., Santolamazza, P., Verrecchia, F., Giommi, P., Colafrancesco, S., Antonelli, A., Cutini, S., Gasparrini, D., Stellato, S., Fanari, G., Primavera, R., Tamburelli, F., Viola, F., Guarrera, G., Salotti, L., D'Amico, F., Marchetti, E., Crisconio, M., Sabatini, P., Annoni, G., Alia, S., Longoni, A., Sanquerin, R., Battilana, M., Concari, P., Dessimone, E., Grossi, R., Parise, A., Monzani, F., Artina, E., Pavesi, R., Marseguerra, G., Nicolini, L., Scandelli, L., Soli, L., Vettorello, V., Zardetto, E., Bonati, A., Maltecca, L., D'Alba, E., Patané, M., Babini, G., Onorati, F., Acquaroli, L., Angelucci, M., Morelli, B., Agostara, C., Cerone, M., Michetti, A., Tempesta, P., D'Eramo, S., Rocca, F., Giannini, F., Borghi, G., Garavelli, B., Conte, M., Balasini, M., Ferrario, I., Vanotti, M., Collavo, E., Giacomazzo, M., Tavani, M., Barbiellini, G., Argan, A., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, A. W., Cocco, V., Costa, E., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Fornari, F., Fuschino, F., Froysland, T., Frutti, M., Galli, M., Gianotti, F., Giuliani, A., Labanti, C., Lapshov, I., Lazzarotto, F., Liello, F., Lipari, P., Longo, F., Mattaini, E., Marisaldi, M., Mastropietro, M., Mauri, A., Mauri, F., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pontoni, C., Porrovecchio, G., Prest, M., Pucella, G., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Soffitta, P., Traci, A., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Vittorini, V., Zambra, A., Zanello, D., Pittori, C., Preger, B., Santolamazza, P., Verrecchia, F., Giommi, P., Colafrancesco, S., Antonelli, A., Cutini, S., Gasparrini, D., Stellato, S., Fanari, G., Primavera, R., Tamburelli, F., Viola, F., Guarrera, G., Salotti, L., D'Amico, F., Marchetti, E., Crisconio, M., Sabatini, P., Annoni, G., Alia, S., Longoni, A., Sanquerin, R., Battilana, M., Concari, P., Dessimone, E., Grossi, R., Parise, A., Monzani, F., Artina, E., Pavesi, R., Marseguerra, G., Nicolini, L., Scandelli, L., Soli, L., Vettorello, V., Zardetto, E., Bonati, A., Maltecca, L., D'Alba, E., Patané, M., Babini, G., Onorati, F., Acquaroli, L., Angelucci, M., Morelli, B., Agostara, C., Cerone, M., Michetti, A., Tempesta, P., D'Eramo, S., Rocca, F., Giannini, F., Borghi, G., Garavelli, B., Conte, M., Balasini, M., Ferrario, I., Vanotti, M., Collavo, E., and Giacomazzo, M.

Abstract

Context. AGILE is an Italian Space Agency mission dedicated to observing the gamma-ray Universe. The AGILE's very innovative instrumentation for the first time combines a gamma-ray imager (sensitive in the energy range 30 MeV–50 GeV), a hard X-ray imager (sensitive in the range 18–60 keV), a calorimeter (sensitive in the range 350 keV–100 MeV), and an anticoincidence system. AGILE was successfully launched on 2007 April 23 from the Indian base of Sriharikota and was inserted in an equatorial orbit with very low particle background.

Published
2009
Full Text
View/download PDF

4. Gamma-ray burst detection with the AGILE mini-calorimeter

Author

Marisaldi, M., Labanti, C., Fuschino, F., Galli, M., Argan, A., Barbiellini, G., Basset, M., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, A., Cocco, V., Costa, E., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Foggetta, L., Froysland, T., Frutti, M., Gianotti, F., Giuliani, A., Lapshov, I., Lazzarotto, F., Liello, F., Lipari, P., Longo, F., Mastropietro, M., Mattaini, E., Mauri, A., Mauri, F., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Picozza, P., Pontoni, C., Porrovecchio, G., Prest, M., Pucella, G., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Soffitta, P., Tavani, M., Traci, A., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Vittorini, V., Zambra, A., Zanello, D., Pittori, C., Verrecchia, F., Cutini, S., Gasparrini, D., Preger, B., Santolamazza, P., Giommi, P., Antonelli, L. A., Colafrancesco, S., Salotti, L., Marisaldi, M., Labanti, C., Fuschino, F., Galli, M., Argan, A., Barbiellini, G., Basset, M., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, A., Cocco, V., Costa, E., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Foggetta, L., Froysland, T., Frutti, M., Gianotti, F., Giuliani, A., Lapshov, I., Lazzarotto, F., Liello, F., Lipari, P., Longo, F., Mastropietro, M., Mattaini, E., Mauri, A., Mauri, F., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Picozza, P., Pontoni, C., Porrovecchio, G., Prest, M., Pucella, G., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Soffitta, P., Tavani, M., Traci, A., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Vittorini, V., Zambra, A., Zanello, D., Pittori, C., Verrecchia, F., Cutini, S., Gasparrini, D., Preger, B., Santolamazza, P., Giommi, P., Antonelli, L. A., Colafrancesco, S., and Salotti, L.

Abstract

Context. The mini-calorimeter (MCAL) instrument on-board the AGILE satellite is a non-imaging gamma-ray scintillation detector sensitive in the 300 keV–100 MeV energy range with a total on-axis geometrical area of 1400 cm2. Gamma-ray bursts (GRBs) are one of the main scientific targets of the AGILE mission and the MCAL design as an independent self-triggering detector makes it a valuable all-sky monitor for GRBs. Furthermore MCAL is one of the very few operative instruments with microsecond timing capabilities in the MeV range.

Published
2008
Full Text
View/download PDF

5. 1-DREAM: 1D Recovery, Extraction and Analysis of Manifolds in noisy environments.

Author

Canducci, M., Awad, P., Taghribi, A., Mohammadi, M., Mastropietro, M., De Rijcke, S., Peletier, R., Smith, R., Bunte, K., and Tiňo, P.

Subjects
MEASUREMENT errors, DWARF galaxies, LARGE scale structure (Astronomy)
Abstract

Filamentary structures (one-dimensional manifolds) are ubiquitous in astronomical data sets. Be it in particle simulations or observations, filaments are always tracers of a perturbation in the equilibrium of the studied system and hold essential information on its history and future evolution. However, the recovery of such structures is often complicated by the presence of a large amount of background and transverse noise in the observation space. While the former is generally considered detrimental to the analysis, the latter can be attributed to measurement errors and it can hold essential information about the structure. To further complicate the scenario, one-dimensional manifolds (filaments) are generally non-linear and their geometry difficult to extract and model. Thus, in order to study hidden manifolds within the dataset, particular care has to be devoted to background noise removal and transverse noise modeling, while still maintaining accuracy in the recovery of their geometrical structure. We propose 1-DREAM: a toolbox composed of five main Machine Learning methodologies whose aim is to facilitate manifold extraction in such cases. Each methodology has been designed to address particular issues when dealing with complicated low-dimensional structures convoluted with noise and it has been extensively tested in previously published works. However, for the first time, in this work all methodologies are presented in detail, joint within a cohesive framework and demonstrated for three particularly interesting astronomical cases: a simulated jellyfish galaxy, a filament extracted from a simulated cosmic web and the stellar stream of Omega-Centauri as observed with the GAIA DR2. Two newly developed visualization techniques are also proposed, that take full advantage of the results obtained with 1-DREAM. This contribution presents the toolbox in all its details and the code is made publicly available to benefit the community. The controlled experiments on a purposefully built data set prove the accuracy of the pipeline in recovering the real underlying structures. [Display omitted] • Toolbox with five semi-automated methods for manifold extraction and modeling. • Background noise removal; • Transverse noise attenuation; • Point-dimensionality estimation; • Manifold's mean curve extraction and corresponding transverse noise modeling. • Two visualization approaches to represent information on extracted manifolds. • Global: Bi-dimensional profile. Information shown along main manifold's directions; • Local: coherent orthonormal coordinate frames. Orthogonal plane shifted along length. • Demonstration of the toolbox to three interesting astronomical cases. • Simulated dwarf galaxy with elongated arms. • Extracted simulated cosmic web filament. • Omega-Centauri stream as observed via the GAIA DR2. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

7. New developments in surface (e,2e) experiments

Author

Lacobucci, S., Rioual, S., Ruocco, A., Mastropietro, M., Stefani, G., Lacobucci, S., Rioual, S., Ruocco, A., Mastropietro, M., and Stefani, G.

Abstract

This work presents the implementation of a position-sensitive detector in the Montelibretti surface (e,2e) apparatus that allows to fully define the direction of the ejected electron from the surface, and hence to improve the momentum resolution. The coincidence electronic chain and the acquisition software have been upgraded in order to achieve high data collection speed, storage of large dimension data files and fast visualisation of the results. Preliminary angle resolved (e,2e) data relative to the ionisation of the Å-1band of highly oriented pyrolitic graphite show that a momentum resolution better than 0.2 Å-1has been achieved without degrading the overall speed of acquisition.

Published
1999
Full Text
View/download PDF

8. 1-DREAM: 1D Recovery, Extraction and Analysis of Manifolds in noisy environments

Author

Canducci, M., Awad, P., Taghribi, A., Mohammadi, M., Mastropietro, M., De Rijcke, S., Peletier, R., Smith, R., Bunte, K., and Tiňo, P.

Abstract

Filamentary structures (one-dimensional manifolds) are ubiquitous in astronomical data sets. Be it in particle simulations or observations, filaments are always tracers of a perturbation in the equilibrium of the studied system and hold essential information on its history and future evolution. However, the recovery of such structures is often complicated by the presence of a large amount of background and transverse noise in the observation space. While the former is generally considered detrimental to the analysis, the latter can be attributed to measurement errors and it can hold essential information about the structure. To further complicate the scenario, one-dimensional manifolds (filaments) are generally non-linear and their geometry difficult to extract and model. Thus, in order to study hidden manifolds within the dataset, particular care has to be devoted to background noise removal and transverse noise modeling, while still maintaining accuracy in the recovery of their geometrical structure. We propose 1-DREAM: a toolbox composed of five main Machine Learning methodologies whose aim is to facilitate manifold extraction in such cases. Each methodology has been designed to address particular issues when dealing with complicated low-dimensional structures convoluted with noise and it has been extensively tested in previously published works. However, for the first time, in this work all methodologies are presented in detail, joint within a cohesive framework and demonstrated for three particularly interesting astronomical cases: a simulated jellyfish galaxy, a filament extracted from a simulated cosmic web and the stellar stream of Omega-Centauri as observed with the GAIA DR2. Two newly developed visualization techniques are also proposed, that take full advantage of the results obtained with 1-DREAM. This contribution presents the toolbox in all its details and the code is made publicly available to benefit the community. The controlled experiments on a purposefully built data set prove the accuracy of the pipeline in recovering the real underlying structures.

Published
2022
Full Text
View/download PDF

9. AGILE detection of variable ?-ray activity from the blazar S5?0716+714 in September?October 2007

Author

Chen, A., D'Ammando, F., Villata, M., Raiteri, C., Tavani, M., Vittorini, V., Bulgarelli, A., Donnarumma, I., Ferrari, A., Giuliani, A., Longo, F., Pacciani, L., Pucella, G., Vercellone, S., Argan, A., Barbiellini, G., Boffelli, F., Caraveo, P., Carosati, D., Cattaneo, P., Cocco, V., Costa, E., Del Monte, E., De Paris, G., Di Cocco, G., Evangelista, Y., Feroci, M., Fiorini, M., Froysland, T., Frutti, M., Fuschino, F., Galli, M., Gianotti, F., Kurtanidze, O., Labanti, C., Lapshov, I., Larionov, V., Lazzarotto, F., Lipari, P., Marisaldi, M., Mastropietro, M., Mereghetti, S., Morelli, E., Morselli, A., Pasanen, M., Pellizzoni, A., Perotti, F., Picozza, P., Porrovecchio, G., Prest, M., Rapisarda, M., Rappoldi, A., Rubini, A., Soffitta, P., Trifoglio, M., Trois, A., Vallazza, E., Zambra, A., Zanello, D., Cutini, S., Gasparrini, D., Pittori, C., Santolamazza, P., Verrecchia, F., Giommi, P., Antonelli, L., Colafrancesco, S., and Salotti, L.

Abstract

Aims. We report the ?-ray activity from the intermediate BL?Lac S5?0716+714 during observations acquired by the AGILE satellite in September and October?2007. These detections of activity were contemporaneous with a period of intense optical activity, which was monitored by GASP?WEBT. This simultaneous optical and ?-ray coverage allows us to study in detail the light curves, time lags, ?-ray photon spectrum, and Spectral Energy Distributions (SEDs) during different states of activity.Methods. AGILE observed the source with its two co-aligned imagers, the Gamma-Ray Imaging Detector (GRID) and the hard X-ray imager (Super-AGILE), which are sensitive to the 30?MeV?50?GeV and 18?60?keV energy ranges, respectively. Observations were completed in two different periods, the first between 2007 September?4?23, and the second between 2007 October?24?November?1.Results. Over the period 2007 September?7?12, AGILE detected ?-ray emission from the source at a significance level of 9.6-? with an average flux (E > 100?MeV) of (97 ? 15) ? 10-8?photons?cm-2?s-1, which increased by a factor of at least four within three days. No emission was detected by Super-AGILE for the energy range 18?60?keV to a 3-? upper limit of 10?mCrab in 335?ks. In October 2007, AGILE repointed toward S5?0716+714 following an intense optical flare, measuring an average flux of (47 ? 11) ? 10-8?photons?cm-2?s-1at a significance level of 6.0-?. Conclusions. The ?-ray flux of S5?0716+714 detected by?AGILE is the highest ever detected for this blazar and one of the most intense??-ray fluxes detected from a BL?Lac?object. The SED of mid-September appears to be consistent with the synchrotron self-Compton (SSC) emission model, but only by including two SSC components of different variabilities.

Published
2008

10. Detrusor Biopsy as a Potential Clinical Tool

Author

Mastropietro, M. A., Geary, W., Fuller, E., and Benson, J. T.

Abstract

Previous published work suggests that electron microscopic findings in bladder biopsies correlate with urodynamic diagnoses of bladder dysfunction in geriatric patients. Our goal was to determine the reproducibility of this previous work and to evaluate the use of detrusor biopsy as a clinical tool in the diagnosis and management in a urogynecology referral population. All patients underwent an initial evaluation, including history, physical examination and urodynamics. Urodynamic evaluation included uroflowmetry, provocative cystometry, instrumented voiding study, urethral profilometry, pressure–flow studies, and evaluation of postvoid residual urine. A cystoscopic-guided detrusor muscle biopsy was obtained from all patients. Each patient was assigned one of four urodynamic diagnoses: detrusor overactivity, obstructed voiding, both overactivity and obstruction, or neither. Each was given a subgroup of normal or ineffective contractility. All detrusor biopsies were evaluated by electron microscopy. Each biopsy was assigned one of four pathologic diagnoses: dysjunction, hypertrophy, both dysjunction and hypertrophy, or neither. Each was given a subgroup of the presence or absence of degeneration. All diagnoses were assigned in a double-blind fashion. All urodynamic and pathologic diagnoses were then compared to determine the percentage agreement. Twenty-six women participated, mean age 52.7 years, range 29–77. Overall agreement among diagnoses was 30% (95% CI 11%–50%). Comparison of each category revealed the following percentage agreements: detrusor overactivity/dysjunction, 52% (95% CI 32%–73%); obstructed voiding/hypertrophy, 78% (95% CI 61%–95%); ineffective contractility/degeneration, 65% (95% CI 45%–85%). The use of detrusor biopsy as a clinical tool was not supported in this population, as demonstrated by the low percentage agreement between urodynamic and pathologic diagnoses. The etiology of bladder dysfunction should be investigated by looking beyond organ-specific structural changes.

Published
2001
Full Text
View/download PDF

12. Attitude Control Systems for Scientific Balloon Payloads

Author

La Padula, C.D., Auriemma, G., Boccaccini, L., Marchetti, C., Mastropietro, M., Medici, G., Patriarca, R., Polcaro, V.F., and Ubertini, P.

Abstract

In this paper we describe two stabilization systems developed for balloon borne payloads in X-ray astronomy experiments. One of them was employed in a 19 hours transmediterranean flight during summer 1978.

Published
1979
Full Text
View/download PDF

13. Monitoring the hard X-ray sky with SuperAGILE

Author

Feroci, M., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Lapshov, I., Lazzarotto, F., Pacciani, L., Rapisarda, M., Soffitta, P., Di Persio, G., Frutti, M., Mastropietro, M., Morelli, E., Porrovecchio, G., Rubini, A., Antonelli, A., Argan, A., Barbiellini, G., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, A. W., Cocco, V., Colafrancesco, S., Cutini, S., D'Ammando, F., De Paris, G., Di Cocco, G., Fanari, G., Ferrari, A., Fiorini, M., Fornari, F., Fuschino, F., Froysland, T., Galli, M., Gasparrini, D., Gianotti, F., Giommi, P., Giuliani, A., Labanti, C., Liello, F., Lipari, P., Longo, F., Mattaini, E., Marisaldi, M., Mauri, A., Mauri, F., Mereghetti, S., Moretti, E., Morselli, A., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pilia, M., Pittori, C., Pontoni, C., Preger, B., Prest, M., Primavera, R., Pucella, G., Rappoldi, A., Rossi, E., Sabatini, S., Santolamazza, P., Tavani, M., Stellato, S., Tamburelli, F., Traci, A., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Verrecchia, F., Vittorini, V., Zambra, A., Zanello, D., and Salotti, L.

Abstract

Context. SuperAGILE is the hard X-ray monitor of the AGILE gamma ray mission, in orbit since 23 April 2007. It is an imaging experiment based on a set of four independent silicon strip detectors, equipped with one-dimensional coded masks, operating in the nominal energy range 18–60 keV.

Published
2010
Full Text
View/download PDF

14. Monitoring the hard X-ray sky with SuperAGILE

Author

Feroci, M., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Lapshov, I., Lazzarotto, F., Pacciani, L., Rapisarda, M., Soffitta, P., Di Persio, G., Frutti, M., Mastropietro, M., Morelli, E., Porrovecchio, G., Rubini, A., Antonelli, A., Argan, A., Barbiellini, G., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, A. W., Cocco, V., Colafrancesco, S., Cutini, S., D'Ammando, F., De Paris, G., Di Cocco, G., Fanari, G., Ferrari, A., Fiorini, M., Fornari, F., Fuschino, F., Froysland, T., Galli, M., Gasparrini, D., Gianotti, F., Giommi, P., Giuliani, A., Labanti, C., Liello, F., Lipari, P., Longo, F., Mattaini, E., Marisaldi, M., Mauri, A., Mauri, F., Mereghetti, S., Moretti, E., Morselli, A., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pilia, M., Pittori, C., Pontoni, C., Preger, B., Prest, M., Primavera, R., Pucella, G., Rappoldi, A., Rossi, E., Sabatini, S., Santolamazza, P., Tavani, M., Stellato, S., Tamburelli, F., Traci, A., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Verrecchia, F., Vittorini, V., Zambra, A., Zanello, D., and Salotti, L.

Abstract

Context. SuperAGILE is the hard X-ray monitor of the AGILE gamma ray mission, in orbit since 23 April 2007. It is an imaging experiment based on a set of four independent silicon strip detectors, equipped with one-dimensional coded masks, operating in the nominal energy range 18–60 keV.Aims. The main goal of SuperAGILE is the observation of cosmic sources simultaneously with the main gamma-ray AGILE experiment, the Gamma Ray Imaging Detector (GRID). Given its ~steradian-wide field of view and its ~15 mCrab day-sensitivity, SuperAGILE is also well suited to the long-term monitoring of Galactic compact objects and the detection of bright transients.Methods. The SuperAGILE detector properties and design allow for a 6 arcmin angular resolution in each of the two independent orthogonal projections of the celestial coordinates. Photon by photon data are continuously available by means of experiment telemetry, and are used to derive images and fluxes of individual sources, with integration times depending on the source intensity and position in the field of view.Results. We report on the main scientific results achieved by SuperAGILE over its first two years in orbit, until April 2009. The scientific observations started in mid-July 2007, with the science verification phase, continuing during the complete AGILE Cycle 1 and the first ~half of Cycle 2. Despite the largely non-uniform sky coverage, due to the pointing strategy of the AGILE mission, a few tens of Galactic sources were monitored, sometimes for unprecedently long continuous periods, leading to the detection also of several bursts and outbursts. Approximately one gamma ray burst per month was detected and localized, allowing for prompt multiwavelength observations. A few extragalactic sources in bright states were occasionally detected as well. The light curves of sources measured by SuperAGILE are made publicly available on the web in almost real-time. To enable a proper scientific use of these, we provide the reader with the relevant scientific and technical background.

Published
2010

Catalog

Books, media, physical & digital resources
See catalog results