On the observations of muons in the direction of Cyg X-3

The binary X-ray source Cyg X-3, a known gamma ray emitter, was recently seen to be emmitting a new type of neutral radiation producing muons detected in deep underground experiments. Here an explanation is offered for the deviation of the observed muon directions from that of Cyg X-3. A new underground experiment is suggested to verify the explanation. The new observations enjoying reduced backgrounds will help establish the phenomenon with enormously improved statistical significance. The nature of the neutral radiation, however, remains obscure.     

The lifetime of a deeply bound H dibaryon and the cygnus X-3 events

The explanation of the Cygnus X-3 events which involves a strange-quark star emitting the doubly strange H dibaryon requires the H to have a lifetime of greater than ten years. We calculate the ΔS=2 H→ NN for an H bound below ΛN threshold, and find τ_H⪅6 days.     

Linear and nonlinear time series analysis of the black hole candidate cygnus X-1

We analyze the variability in the x-ray lightcurves of the black hole candidate Cygnus X-1 by linear and nonlinear time series analysis methods. While a linear model describes the overall second order properties of the observed data well, surrogate data analysis reveals a significant deviation from linearity. We discuss the relation between shot noise models usually applied to analyze these data and linear stochastic autoregressive models. We debate statistical and interpretational issues of surrogate data testing for the present context. Finally, we suggest a combination of tools from linear and nonlinear time series analysis methods as a procedure to test the predictions of astrophysical models on observed data.     

Sneutrinos from Cygnus X-3?

The possibility that the underground muons arriving from Cygnus X-3 are due to a flux of sneutrinos is analyzed. Crude approximations show that the muons can be due to a resonance production of light charged gauginos produced in sneutrino-electron collisions.     

Search for exotic events from the L3+C data

An effort to search for Kolar-like events within the data set of the L3+C experiment is reported. From a total of 0.89×1010 triggered events there are no reliable two-prong Kolar-like events observed. The some reasonable assumptions.     

Search for exotic events from the L3+C data

An effort to search for Kolar-like events within the data set of the L3＋C experiment is reported. From a total of 0.89×10^10 triggered events there are no reliable two-prong Kolar-like events observed. The corresponding event flux upper limit 7.1 × 10^-13 cm^-2. s^-1 . sr^-1 at 90% confidence level is deduced based on some reasonable assumptions.