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Multiwavelength observations of GX 339−4

AIP Publishing (1997) 932-936

Authors:

IA Smith, EP Liang, M Moss, J Dobrinskaya, RP Fender, Ph Durouchoux, S Corbel, R Sood, AV Filippenko, DC Leonard
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New radio observations of Circinus X-1

AIP Conference Proceedings AIP Publishing 410:1 (1997) 798-802
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Observations of the Hubble Deep Field with the Infrared Space Observatory - III. Source counts and P(D) analysis

Monthly Notices of the Royal Astronomical Society 289:2 (1997) 471-481

Authors:

SJ Oliver, P Goldschmidt, A Franceschini, SBG Serjeant, A Efstathiou, A Verma, C Gruppioni, N Eaton, RG Mann, B Mobasher, CP Pearson, M Rowan-Robinson, TJ Sumner, L Danese, D Elbaz, E Egami, M Kontizas, A Lawrence, R McMahon, HU Norgaard-Nielsen, I Perez-Fournon, JI Gonzalez-Serrano

Abstract:

We present source counts at 6.7 and 15 μm from our maps of the Hubble Deep Field (HDF) region, reaching 38.6 μJy at 6.7 μm and 255 μJy at 15 μm. These are the first ever extragalactic number counts to be presented at 6.7 μm, and are three decades fainter than IRAS at 12 μm. Both source counts and a P(D) analysis suggest that we have reached the Infrared Space Obsen'atory (ISO) confusion limit at 15 μm: this will have important implications for future space missions. These data provide an excellent reference point for other ongoing ISO surveys. A no-evolution model at 15 μm is ruled out at > 3σ, while two models which fit the steep IRAS 60-μm counts are acceptable. This provides important confirmation of the strong evolution seen in IRAS surveys. One of these models can then be ruled out from the 6.7-μm data. © 1997 RAS.
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Radio observations of the black hole candidate GX 339−4

AIP Conference Proceedings AIP Publishing 410:1 (1997) 937-941

Authors:

S Corbel, RP Fender, P Durouchoux, RK Sood, AK Tzioumis, RE Spencer, D Campbell-Wilson
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Search for charged higgs boson decays of the top quark using hadronic decays of the tau lepton

Physical Review Letters 79:3 (1997) 357-362

Authors:

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, S Aota, G Apollinari, T Asakawa, W Ashmanskas, M Atac, F Azfar, P Azzi-Bacchetta, N Bacchetta, W Badgett, S Bagdasarov, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, B Barnett, M Barone, E Barzi, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, J Berryhill, S Bertolucci, B Bevensee, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, G Bolla, D Bortoletto, J Boudreau, L Breccia, C Bromberg, N Bruner, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, D Cauz, Y Cen, F Cervelli, PS Chang, PT Chang, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, E Cocca, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, D Cronin-Hennessy, R Culbertson, T Daniels, F De Jongh, S Delchamps, S Dell-Agnello, M Dell-Orso, R Demina, L Demortier

Abstract:

This Letter describes a direct search for charged Higgs boson production in proton-antiproton collisions at sqrt(s)=1.8 TeV recorded by the Collider Detector at Fermilab. Two-Higgs-doublet extensions to the standard model predict the existence of charged Higgs bosons. In such models, the branching fraction for top quarks B(t → H b → tau nu b) can be large. This search uses the hadronic decays of the tau lepton in this channel to significantly extend previous limits on charged Higgs production. © 1997 The American Physical Society.
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