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Tracking the variable jets of V404 Cygni during its 2015 outburst

(2018)

Authors:

AJ Tetarenko, GR Sivakoff, JCA Miller-Jones, M Bremer, KP Mooley, RP Fender, C Rumsey, A Bahramian, D Altamirano, S Heinz, D Maitra, SB Markoff, S Migliari, MP Rupen, DM Russell, TD Russell, CL Sarazin
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A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary

(2018)

Authors:

K De, MM Kasliwal, EO Ofek, TJ Moriya, J Burke, Y Cao, SB Cenko, GB Doran, GE Duggan, RP Fender, C Fransson, A Gal-Yam, A Horesh, SR Kulkarni, RR Laher, R Lunnan, I Manulis, F Masci, PA Mazzali, PE Nugent, DA Perley, T Petrushevska, AL Piro, C Rumsey, J Sollerman, M Sullivan, F Taddia
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KiDS-SQuaD: The KiDS Strongly lensed Quasar Detection project

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 480:1 (2018) 1163-1173

Authors:

C Spiniello, A Agnello, NR Napolitano, AV Sergeyev, FI Getman, C Tortora, M Spavone, M Bilicki, H Buddelmeijer, LVE Koopmans, K Kuijken, G Vernardos, E Bannikova, M Capaccioli
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Search for standard-model Z and Higgs bosons decaying into a bottom-antibottom quark pair in proton-antiproton collisions at 1.96 TeV

PHYSICAL REVIEW D American Physical Society (APS) 98:7 (2018) 72002

Authors:

T Aaltonen, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, Ja Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, Ve Barnes, Ba Barnett, P Barria, P Bartos, M Bauce, F Bedeschi, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, Kr Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, C Bromberg, E Brucken, J Budagov, Hs Budd, K Burkett, G Busetto, P Bussey, P Butti, A Buzatu, A Calamba, S Camarda, M Campanelli

Abstract:

© 2018 authors. Published by the American Physical Society. The Collider Detector at Fermilab collected a unique sample of jets originating from bottom-quark fragmentation (b-jets) by selecting online proton-antiproton (pp̄) collisions with a vertex displaced from the pp̄ interaction point, consistent with the decay of a bottom-quark hadron. This data set, collected at a center-of-mass energy of 1.96 TeV, and corresponding to an integrated luminosity of 5.4 fb-1, is used to measure the Z-boson production cross section times branching ratio into bb̄. The number of Z→bb̄ events is determined by fitting the dijet-mass distribution, while constraining the dominant b-jet background, originating from QCD multijet events, with data. The result, σ(pp̄→Z)×B(Z→bb̄)=1.11±0.08(stat)±0.14(syst) nb, is the most precise measurement of this process, and is consistent with the standard-model prediction. The data set is also used to search for Higgs-boson production. No significant signal is expected in our data and the first upper limit on the cross section for the inclusive pp̄→H→bb̄ process at s=1.96 TeV is set, corresponding to 33 times the expected standard-model cross section, or σ=40.6 pb, at the 95% confidence level.
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Transit timing analysis of the exoplanet TrES-5 b. Possible existence of the exoplanet TrES-5 c

Monthly Notices of the Royal Astronomical Society 480:1 (2018) 291-301

Authors:

EN Sokov, IA Sokova, VV Dyachenko, DA Rastegaev, A Burdanov, SA Rusov, P Benni, S Shadick, VP Hentunen, M Salisbury, N Esseiva, J Garlitz, M Bretton, Y Ogmen, Y Karavaev, A Ayiomamitis, O Mazurenko, D Alonso, SF Velichko

Abstract:

In this work, we present transit timing variations detected for the exoplanet TrES-5b. To obtain the necessary amount of photometric data for this exoplanet, we have organized an international campaign to search for exoplanets based on the transit-timing variation (TTV) method and as a result of this we collected 30 new light curves, 15 light curves from the Exoplanet Transit Database (ETD) and 8 light curves from the literature for the timing analysis of the exoplanet TrES-5b. We have detected timing variations with a semi-amplitude of A≈ 0.0016 d and a period of P≈ 99 d. We carried out the N-body modelling based on the three-body problem. The detected perturbation of TrES-5b may be caused by a second exoplanet in the TrES-5 system. We have calculated the possible mass and resonance of the object: M ≈ 0.24MJup at a 1:2 Resonance.
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