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71 results on '"Claudia Maria Raiteri"'

3. A radio-optical study on the BL Lac object S5 0716+71

Author

Claudia Maria Raiteri, Villata, M., Lanteri, L., Ostorero, L., Tosti, G., Ciprini, S., Nucciarelli, G., Nesci, R., Massaro, E., Maesano, M., Montagni, F., Papadakis, I. E., Kurtanidze, O. M., Nikolashvili, M. G., Ibrahimov, M. A., Aller, M. F., Aller, H. D., and Teräsranta, H.

Published
2002

4. The Whole Earth Blazar Telescope (WEBT)

Author

Villata, M., Claudia Maria Raiteri, Tosti, G., Ciprini, S., Ibrahimov, M. A., Kurtanidze, O. M., Massaro, E., Mattox, J. R., Nesci, R., Nikolashvili, M. G., Ostorero, L., Papadakis, I. E., Sadibekova, T. O., Sillanpaa, A., Takalo, L. O., and Tsinganos, K.

Published
2002

6. A possible optical/gamma-ray short-term correlation in 3C 279

Author

Hartman, R. C., Thompson, D. J., Villata, M., Claudia Maria Raiteri, Sobrito, G., Ostorero, L., Francesco, G., Tosti, G., Kurtanidze, O., Nikolashvili, M., Takalo, L., Sillanpää, A., Koskimies, M., Pursimo, T., Rekola, R., Heidt, J., Wagner, S., Carini, M. T., Noble, J. C., Balonek, T. J., Miller, H. R., Ferrara, E. C., Mcfarland, J. P., and Wilson, J. W.

Published
2001

7. The extraordinary optical outburst of ON 231 (W Com) in spring 1998

Author

Massaro, E., Maesano, M., Montagni, F., Nesci, R., Tosti, G., Fiorucci, M., Luciani, M., Takalo, L. O., Sillanpää, A., Katajainen, S., Keinänen, P., Pursimo, T., Villata, M., Claudia Maria Raiteri, Francesco, G., Sobrito, G., Efimov, Y. S., and Shakhovskoy, N. M.

Subjects
GALAXIES: BL LACERTAE OBJECTS: INDIVIDUAL: ON 231, GALAXIES: BL LACERTAE OBJECTS: GENERAL
Published
1999

9. Optical behaviour of BL Lacertae during the great 1997 outburst

Author

Tosti, G., Luciani, M., Fiorucci, M., Massaro, E., Nesci, R., Maesano, M., Montagni, F., Villata, M., Claudia Maria Raiteri, Francesco, G., Sobrito, G., Takalo, L. O., Sillanpää, A., Katajainen, S., Pursimo, T., Kurtanidze, O. M., and Nikolashvili, M. G.

Subjects
BL Lacertae Objects: Outbursts, BL Lacertae Objects: Optical Variations, BL Lacertae Objects: Optical Observations, BL Lacertae Objects: Light Curves
Published
1999

10. Optical-radio monitoring of AO 0235+16

Author

Villata, M., Claudia Maria Raiteri, Tosti, G., Takalo, L. O., Sillanpää, A., Teräsranta, H., Tornikoski, M., Aller, M. F., Aller, H. D., Francesco, G., Sobrito, G., Ostorero, L., and Puccio, M.

Published
1999

11. Optical and radio behaviour of the blazar S4 0954+65

Author

Claudia Maria Raiteri, Villata, M., Tosti, G., Fiorucci, M., Ghisellini, G., Takalo, L. O., Sillanpää, A., Valtaoja, E., Teräsranta, H., Tornikoski, M., Aller, M. F., Aller, H. D., Francesco, G., Heinämäki, P., Katajainen, S., Lanteri, L., Nilsson, K., Pursimo, T., Rizzi, N., and Sobrito, G.

Published
1999

12. Optical-IUE observations of the gamma-ray loud BL Lacertae object S5 0716+714: data and interpretation

Author

Ghisellini, G., Villata, M., Claudia Maria Raiteri, Bosio, S., Francesco, G., Latini, G., Maesano, M., Massaro, E., Montagni, F., Nesci, R., Tosti, G., Fiorucci, M., Pian, E., Maraschi, L., Treves, A., Comastri, A., and Mignoli, M.

Subjects
GAMMA-RAYS: THEORY, BL LAC OBJECTS: INDIVIDUAL: S5 0716+714, BL LAC OBJECTS: GENERAL, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, ULTRAVIOLET: GALAXIES, Astrophysics
Abstract

We monitored the BL Lac object S5 0716+714 in the optical band during the period November 1994-April 1995, which includes the time of a gamma-ray observation by the Energetic Gamma Ray Experiment Telescope (EGRET) on February 14--28, 1995. The light curves in the R and B bands show fast fluctuations superimposed on longer timescale variations. The color index correlates with intensity during the rapid flares (the spectrum is flatter when the flux is higher), but it is rather insensitive to the long term trends. Over the 5 month observational period the light curve shows an overall brightening of about 1 mag followed by a fast decline. The EGRET pointing covers part of the very bright phase (V about 13.2) and the initial decline. An ultraviolet spectrum was also obtained with the International Ultraviolet Explorer (IUE) (1200-3000 A) during the EGRET observations. The variability of the optical emission of S5 0716+714 by itself sets important constraints on the magnetic field strength and on the physical processes responsible for it. Interpreting the whole electromagnetic spectrum with synchrotron self Compton models leads to the prediction of a bright gamma-ray state during the EGRET pointing. We discuss how the gamma-ray data could be used as a diagnostic of the proposed models., Comment: 13 pages, LateX, 10 figures (included). Uses l-aa.sty and epsf.sty. To appear in A&A

Published
1997

13. Double-peak structure in the cyclic optical outbursts of blazar OJ 287

Author

Sillanpaa, A., Takalo, L. O., Pursimo, T., Nilsson, K., Heinamaki, P., Katajainen, S., Pietila, H., Hanski, M., Rekola, R., Kidger, M., Boltwood, P., Turner, G. W., Robertson, J. W., Honeycut, R. K., Efimov, Yu S., Shakhovskoy, N., Fiorucci, M., Tosti, G., Ghisellini, G., Claudia Maria Raiteri, Villata, M., Francesco, G., Lanteri, L., Chiaberge, M., Peila, A., and Heidt, J.

Subjects
VARIABILITY, SOURCES: BLAZARS, INDIVIDUAL: OJ 287
Published
1996

14. Light Curves of OJ 287, 3C 66A, AO 0235+164 and S5 0716+714 observed during the OJ-94 Project

Author

Sillanpää, A., Takalo, L. O., Pursimo, T., Lehto, H. J., Nilsson, K., Teerikorpi, P., Heinämäki, P., Lainela, M., Kidger, M., Diego, J. A., González-Pérez, J. N., Rodríguez-Espinosa, J. -M, Mahoney, T., Boltwood, P., Dultzin-Hacyan, D., Benítez, E., Turner, G. W., Robertson, J. W., Honeycut, R. K., Efimov, Yu S., Shakhovskoy, N., Charles, P. A., Schramm, K. J., Borgeest, U., Linde, J. V., Weneit, W., Kühl, D., Schramm, T., Sadun, A., Grashuis, R., Heidt, J., Wagner, S., Bock, H., Kümmel, M., Heines, A., Fiorucci, M., Tosti, G., Ghisellini, G., Claudia Maria Raiteri, Villata, M., Francesco, G., Bosio, S., and Latini, G.

Published
1996

17. Galactic evolution of Cu and Zn

Author

Claudia Maria Raiteri, Matteucci, F., Busso, M., Gallino, R., and Gratton, R.

Subjects
Galaxy: Copper, Galaxy: Chemical Evolution, Galaxy: Zinc
Published
1993

20. Optical Monitoring of Gamma-Ray Loud Blazars

Author

Claudia Maria Raiteri, Ghisellini, G., Villata, M., Francesco, G., Bosio, S., Latini, G., Chiumiento, G., Lanteri, L., Massone, G., Racioppi, F., and Smart, R. L.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics
Abstract

The observations by the Compton Gamma Ray Observatory (CGRO) have shown that highly variable and radio-loud quasars emit a significant fraction of their energy in the γ band. According to the Inverse Compton model, the γ-ray emission is due to upscattering of soft (IR-optical-UV) photons by high energy particles. Optical monitoring is thus of great value in providing information on the mechanisms that rule the production of the seed photons for the γ-ray radiation and on the γ-ray emission itself. In particular, detection of variability correlations between optical and γ-ray emissions would be a crucial test for the theoretical predictions.

Published
1996
Full Text
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24. MS and S stars with and without Tc

Author

Busso, M., Gallino, R., Lambert, D. L., Claudia Maria Raiteri, and Smith, V. V.

Subjects
Red Giants: Nucleosynthesis, Red Giants: Technetium, Red Giants: Stellar Envelopes

29. Multifrequency monitoring of blazars OJ 287 and 3C 66A

Author

Takalo, L. O., Sillanpaa, A., Pursimo, T., Lehto, H. J., Nilsson, K., Teerikorpi, P., Heinamaki, P., Kidger, M., Diego, J. A., Gonzalez-Perezz, J. N., Rodriguez-Espinosa, J. -M, Mahoney, T., Boltwood, P., Dultzin-Hacyan, D., Benitez, E., Turner, G. W., Robertson, J. W., Honeycut, R. K., Efimov, Y. S., Shakhovskoy, N., Charles, P. A., Schramm, K. J., Borgeest, U., Linde, J. V., Weneit, W., Kuehl, D., Schramm, T., Sadun, A., Grashuis, R., Heidt, J., Wagner, S., Bock, H., Kuemmel, M., Heines, A., Fiorucci, M., Tosti, G., Ghisellini, G., Claudia Maria Raiteri, Villata, M., Francesco, G., Bosio, S., Latini, G., Aller, M., Aller, D., Hugues, P., Valtaoja, E., Terasranta, H., Tornikoski, M., Webb, J., Pian, E., Treves, A., Shrader, C., and Mccollum, B.

30. The Whole Earth Blazar telescope on BL Lacertae (Poster)

Author

Villata, M., Claudia Maria Raiteri, Kurtanidze, O. M., Nikolashvili, M. G., Ibrahimov, M. A., Papadakis, I. E., Tsinganos, K., Sadakane, K., Okada, N., Takalo, L. O., Sillanpää, A., Tosti, G., Ciprini, S., Frasca, A., Marilli, E., Robb, R. M., Noble, J. C., Jorstad, S. G., Hagen-Thorn, V. A., Larionov, V. M., Nesci, R., Maesano, M., Schwartz, R. D., Basler, J., Gorham, P. W., Iwamatsu, H., Kato, T., Pullen, C., Benítez, E., Diego, J. A., Moilanen, M., Oksanen, A., Rodriguez, D., Sadun, A. C., Kelly, M., Carini, M. T., Miller, H. R., Catalano, S., Dultzin-Hacyan, D., Fan, J. H., Ishioka, R., Karttunen, H., Keinínen, P., Kudryavtseva, N. A., Lainela, M., Lanteri, L., Larionova, E. G., Matsumoto, K., Mattox, J. R., Montagni, F., Nucciarelli, G., Ostorero, L., Papamastorakis, J., Pasanen, M., Sobrito, G., and Uemura, M.

31. Rapid brightening of 3C 279

Author

Claudia Maria Raiteri, Villata, M., Francesco, G., Sobrito, G., Lanteri, L., Puccio, M., and Ostorero, L.

41. S5 0716+71 from 1994 to 2001. Optical and radio Variability (Poster)

Author

Claudia Maria Raiteri, Villata, M., Lanteri, L., Ostorero, L., Tosti, G., Ciprini, S., Nucciarelli, G., Nesci, R., Massaro, E., Maesano, M., Montagni, F., Papadakis, I. E., Kurtanidze, O. M., Nikolashvili, M. G., Ibrahimov, M. A., Aller, M. F., Aller, H. D., and Teräsranta, H.

43. High energy observations of gamma ray loud AGN

Author

Foschini, L., Bianchin, V., Di Cocco, G., Malaguti, G., Pian, E., Ghisellini, G., Maraschi, L., Tagliaferri, G., Tavecchio, F., Treves, A., Claudia Maria Raiteri, Villata, M., and Tosti, G.

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