Take a look at a few of my projects I’ve completed or been a part of during the course of my career.
Probing Dark Matter Models with
Neutrinos from Galactic Center
Arif Emre Erkoca, Mary Hall Reno, and Ina Sarcevic
Phys. Rev. D 82, 113006 – Published 6 December 2010
We calculate the contained and upward muon and shower fluxes due to neutrinos produced via dark matter annihilation or decay in the Galactic center. We consider dark matter models in which the dark matter particle is a gravitino, a Kaluza-Klein particle and a particle in leptophilic models. The Navarro-Frenk-White profile for the dark matter density distribution in the Galaxy is used ...
Muon Fluxes and Showers from Dark Matter Annihilation in the Galactic Center
Arif Emre Erkoca, Graciela Gelmini, Mary Hall Reno, and Ina Sarcevic
Phys. Rev. D 81, 096007 – Published 25 May 2010
We calculate contained and upward muon flux and contained shower event rates from neutrino interactions, when neutrinos are produced from annihilation of the dark matter in the Galactic center. We consider model-independent direct neutrino production and secondary neutrino production from the decay of taus, W bosons, and bottom quarks produced in the annihilation of dark matter.
Muon Fluxes from Dark Matter Annihilation
Arif Emre Erkoca, Mary Hall Reno, and Ina Sarcevic
Phys. Rev. D 80, 043514 – Published 18 August 2009
We calculate the muon flux from annihilation of the dark matter in the core of the Sun, in the core of the Earth and from cosmic diffuse neutrinos produced in dark matter annihilation in the halos. We consider model-independent direct neutrino production and secondary neutrino production from the decay of taus produced in the annihilation of dark matter.
HIGGS Production and Decay from TEV Scale Black Holes at the LHC
Arif Emre Erkoca, Gouranga C. Nayak, and Ina Sarcevic
Phys. Rev. D 79, 094011 – Published 11 May 2009
We perform a detailed study of the Higgs production and decay, when Higgs is emitted from the black holes produced in proton-proton collisions at the Large Hadron Collider. We show that black hole production can significantly enhance the signal for the Higgs search at the LHC. We evaluate rapidity distribution of diphotons and transverse momentum distribution of bottom quarks, photons, tau leptons, top quarks, and W bosons from Higgs decay, when Higgs is emitted from the black hole and also in the case when these particles are produced directly from the black hole evaporation.
Timing Studies on RXTE Observations of
SAX J2103.5+4545
A. Baykal, S. Ç. İnam, M. J. Stark, C. M. Heffner, A. E. Erkoca and J. H. Swank
SAX J2103.5+4545 has been continuously monitored for ∼900 d by the Rossi X-ray Timing Explorer (RXTE) since its outburst in 2002 July. Using these observations and previous archival RXTE observations of SAX J2103.5+4545, we refined the binary orbital parameters and find the new orbital period as P= (12.665 36 ± 0.000 88) d and the eccentricity as 0.4055 ± 0.0032. With these new orbital parameters, we constructed the pulse frequency and pulse frequency derivative histories of the pulsar and confirmed the correlation between X-ray flux and pulse frequency derivative presented by Baykal, Stark & Swank. We constructed the power spectra for the fluctuations of pulse frequency derivatives and found that the power-law index of the noise spectra is 2.13 ± 0.6.