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  1. No Access

    Article

    New blazar candidates from the 9Y-MST catalogue detected at energies higher than 10 GeV

    We present a list of 24 new blazar candidates selected in a search for possible counterparts of spatial clusters of ...

    R. Campana, E. Massaro in Astrophysics and Space Science (2019)

  2. No Access

    Article

    Minimum Spanning Tree cluster analysis of the LMC region above 10 GeV: detection of the SNRs N 49B and N 63A

    We present the results of a cluster search in the γ ...

    R. Campana, E. Massaro, E. Bernieri in Astrophysics and Space Science (2018)

  3. No Access

    Article

    Application of the MST clustering to the high energy \(\gamma \) -ray sky. IV—Blazar candidates found as possible counterparts of photon clusters

    We present the results of a cluster search in the Fermi-LAT Pass 8 γ ...

    R. Campana, E. Massaro, E. Bernieri in Astrophysics and Space Science (2016)

  4. No Access

    Article

    Application of the MST clustering to the high energy \(\gamma\) -ray sky. III—New detections of \(\gamma\) -ray emission from blazars

    We present the results of a photon cluster search in the γ ...

    R. Campana, E. Massaro, E. Bernieri in Astrophysics and Space Science (2016)

  5. No Access

    Article

    Application of the MST clustering to the high energy \(\gamma\) -ray sky. II—Possible detection of \(\gamma\) -ray emission from blazar candidates in the 1WHSP sample

    We present the results of a photon cluster search in the 7-years Fermi-Large Area Telescope extragalactic Pass 8

    R. Campana, E. Massaro, E. Bernieri in Astrophysics and Space Science (2016)

  6. No Access

    Article

    Application of the MST clustering to the high energy \(\gamma\) -ray sky. I—New possible detection of high-energy \(\gamma\) -ray emission associated with BL Lac objects

    In this paper we show an application of the Minimum Spanning Tree (MST) clustering method to the high-energy ...

    R. Campana, E. Massaro, E. Bernieri, Q. D’Amato in Astrophysics and Space Science (2015)

  7. No Access

    Article

    The 5th edition of the Roma-BZCAT. A short presentation

    The 5th edition of the Roma-BZCAT Multifrequency Catalogue of Blazars is available in a printed version and online at the ASDC website (http://www.asdc.asi.it/bzcat

    E. Massaro, A. Maselli, C. Leto, P. Marchegiani, M. Perri… in Astrophysics and Space Science (2015)

  8. No Access

    Article

    Non-linear oscillator models for the X-ray bursting of the microquasar GRS 1915+105

    The microquasar GRS 1915+105, exhibits a large variety of characteristic states, according to its luminosity, spectral state, and variability. The most interesting one is the so-called ρ-state, whose light curve ...

    E. Massaro, A. Ardito, P. Ricciardi, F. Massa, T. Mineo… in Astrophysics and Space Science (2014)

  9. No Access

    Article

    Minimal spanning tree algorithm for γ-ray source detection in sparse photon images: cluster parameters and selection strategies

    The minimal spanning tree (MST) algorithm is a graph-theoretical cluster-finding method. We previously applied it to γ-ray bidimensional images, showing that it is quite sensitive in finding faint sources. Possib...

    R. Campana, E. Bernieri, E. Massaro, F. Tinebra, G. Tosti in Astrophysics and Space Science (2013)

  10. No Access

    Article

    BeppoSAX observations of GRS 1915+105

    The galactic superluminal source GRS 1915+105 was observed byBeppoSAX at several occasions from October 1996 to April 2000. In April 1999 the 2–10 keV light curve showed a long series of quasi regular pulses w...

    M. Feroci, P. Casella, E. Costa, E. Massaro, P. Soffitta… in Astrophysics and Space Science (2001)

  11. No Access

    Article

    Towards a new maximum of OJ 287?

    The results of a photometric campaign in theB, V, R andI bands of the BL Lac object OJ 287 are presented. The source is found at the same level and spectral slope as in 1991, without any sign forecasting the pred...

    F. Montagni, M. Maesano, E. Massaro, R. Nesci in Astrophysics and Space Science (1994)

  12. No Access

    Article

    Status of the development of the imaging proportional counters for the Stellar X-Ray Polarimeter

    The Stellar X-Ray Polarimeter SXRP will be flown at the focus of the SODART X-ray telescope aboard the Russian satellite SPECTRUM-X-Gamma by the end of 1995. Four imaging proportional counters will detect phot...

    P. Soffitta, L. Barbanera, E. Costa, G. Di Persio, M. Feroci… in Il Nuovo Cimento C (1993)

  13. No Access

    Article

    FIGARO IV: Large-area balloon-borne telescope to study rapid time variabilities in the gamma-ray sources at energies above 50 MeV

    We present a new γ-ray telescope based on the Limited Streamer Tube technology, used as tracking chambers to detect photons above 100 MeV. This technique allows to obtain very large sensitive areas (16 m2 in our ...

    B. Sacco, G. Agnetta, B. Biondo, O. Catalano, G. Cusumano… in Il Nuovo Cimento C (1993)

  14. No Access

    Article

    SXRP: an X-ray polarimeter for the SPECTRUM-X-Gamma Mission

    TheStellar X-ray Polarimeter (SXRP) is a focal plane instrument which will be flown on the SPECTRUM-X-Gamma mission in 1993. The polarimeter is composed of two separate instruments: the first exploits the depende...

    E. Costa, L. Piro, P. Soffitta, E. Massaro, G. Matt, G. C. Perola… in Il Nuovo Cimento C (1992)

  15. No Access

    Article

    The SUGAR experiment, technical description and performances

    An experiment to verify the performances of BGO/CsI phoswich detectors, in the domain of gamma-ray astronomy, was converted into a small-size experiment to detect X-gamma emission from the SN1987A. We shortly ...

    E. Costa, L. Barbanera, D. Cardini, G. Ceracchi, M. V. Cinti… in Il Nuovo Cimento C (1990)

  16. No Access

    Article

    A scattering polarimeter for X-ray astronomy

    We describe a high sensitivity X-ray Thomson polarimeter for astrophysical research, particularly designed for the XMM mission. The efficiency, the modulation factor and the performances of this instrument hav...

    E. Costa, A. Emanuele, A. Rubini, E. Massaro, G. Matt, G. Medici… in Il Nuovo Cimento C (1990)

  17. No Access

    Article

    Diffusion and convection of relativistic electrons in non-thermal sources: Steady-state solutions

    In this paper we study the propagation of relativistic electrons in stationary spherically-symmetric models of non-thermal sources. Electrons are injected by a collapsed object in the centre and then diffuse a...

    E. Massaro in Astrophysics and Space Science (1985)

  18. No Access

    Article

    Study of a BGO-CsI phoswich detector and possible applications to X- and γ-ray astrophysics

    The BGO scintillators have nowaday an extended application in different domains of physics. We have investigated the feasibility of a BGO-CsI(Tl) phoswich, for future applications in X- and γ-ray astrophysics ...

    E. Costa, G. Auriemma, G. A. De Biase, E. Massaro, G. Medici, L. Piro in Il Nuovo Cimento C (1984)

  19. No Access

    Article

    Observability of γ-ray pulsars

    PULSARS seem to play a major role as γ-ray emitters. Of the 13 objects listed in the first COS B catalogue1 the two brightest, CG185-5 and CG263-2, have been identified with the Crab (PSR0531+21) and Vela (PSR083...

    R. BUCCHERI, N. D'AMICO, E. MASSARO, L. SCARSI in Nature (1978)

  20. No Access

    Article

    On the identification of celestial γ-ray sources

    THE observations from COS B have provided a new and more detailed picture of the high energy γ-ray emission from the Galaxy. We discuss here the first catalogue with 13 localised sources which has been compiled1,...

    E. MASSARO, L. SCARSI in Nature (1978)