scholarly journals Neutrino Emission from Magnetized Microquasar Jets

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Theodoros Smponias ◽  
Odysseas Kosmas
Keyword(s):  
Stellar System ◽  
Neutrino Energy ◽  
Neutrino Emission ◽  
Fast Proton ◽  
Hadronic Jets ◽  
X Ray ◽  
Ss 433 ◽  
Secondary Particles ◽  
Dynamical Simulations ◽  
Fast Protons

The hadronic jets in a microquasar stellar system are modeled with the relativistic hydrocode PLUTO. We focus on neutrino emission from such jets produced by fast proton (nonthermal) collisions on thermal ones within the hadronic jet. We adopt a semianalytical approximation for the description of the secondary particles produced from p-p collisions and develop appropriate algorithms using the aforementioned injected protons as input. As a concrete example, we consider the SS-433 X-ray binary system for which several observations have been made the last decades. In contrast to the preset distribution of the fast protons along the jet employed in our previous works, in the present paper, we simulated it by using a power-law fast proton distribution along the PLUTO hydrocode. This distribution gradually sweeps aside the surrounding winds, during the jet advance through the computational grid. As a first step, in the present work, the neutrino energy spectrum is extracted from the model jet, facilitating a range of potential dynamical simulations in currently interesting microquasar jet systems.

scholarly journals Simulations of Gamma-Ray Emission from Magnetized Microquasar Jets

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Odysseas Kosmas ◽  
Theodoros Smponias
Keyword(s):  
Gamma Ray ◽  
Initial Conditions ◽  
Stellar System ◽  
Compact Object ◽  
High Energy ◽  
Radiative Properties ◽  
Flow Density ◽  
Hadronic Jets ◽  
X Ray ◽  
Jet Plasma

In this work, we simulate γ-rays created in the hadronic jets of the compact object in binary stellar systems known as microquasars. We utilize as the main computational tool the 3D relativistic magnetohydrodynamical code PLUTO combined with in-house derived codes. Our simulated experiments refer to the SS433 X-ray binary, a stellar system in which hadronic jets have been observed. We examine two new model configurations that employ hadron-based emission mechanisms. The simulations aim to explore the dependence of the γ-ray emissions on the dynamical as well as the radiative properties of the jet (hydrodynamic parameters of the mass-flow density, gas-pressure, temperature of the ejected matter, high energy proton population inside the jet plasma, etc.). The results of the two new scenarios of initial conditions for the microquasar stellar system studied are compared to those of previously considered scenarios.

ALIGNMENT PHENOMENON IN GAMMA FAMILIES WITH ENERGIES 100–1000 TEV

2005 ◽  
Vol 20 (29) ◽  
pp. 7032-7034 ◽  
Author(s):  
T. S. YULDASHBAEV ◽  
KH. NURITDINOV
Keyword(s):  
Experimental Data ◽  
Energy Dependence ◽  
Energetic Particles ◽  
Emulsion Chamber ◽  
X Ray ◽  
Secondary Particles ◽  
String Models

According to Pamir X-ray Emulsion Chamber (XEC) experimental data at the energies E est > 2 × 1016 eV the fraction of events with four "aligned" most energetic particles increases sharply for families without leading secondary particles. That energy dependence is not described by Quark Gluon String Models.

scholarly journals Coupled Radio and X‐Ray Emission and Evidence for Discrete Ejecta in the Jets of SS 433

2008 ◽  
Vol 682 (2) ◽  
pp. 1141-1151 ◽  
Author(s):  
J. C. A. Miller‐Jones ◽  
S. Migliari ◽  
R. P. Fender ◽  
T. W. J. Thompson ◽  
M. van der Klis ◽  
...  
Keyword(s):  
X Ray ◽  
Ss 433

SS 433 as a Magnetic X-Ray Binary

1980 ◽  
pp. 375-379
Author(s):  
G. W. Collins ◽  
G. H. Newsom ◽  
R. N. Boyd
Keyword(s):  
X Ray ◽  
Ss 433

X-Ray Light Curve Modelling of SS 433

1993 ◽  
pp. 367-368
Author(s):  
N. I. Shakura ◽  
E. V. Seifina ◽  
K. A. Postnov ◽  
M. E. Prokhorov
Keyword(s):  
Light Curve ◽  
X Ray ◽  
Ss 433

scholarly journals A Galactic dust devil: far-infrared observations of the Tornado supernova remnant candidate

2020 ◽  
Vol 499 (4) ◽  
pp. 5665-5678
Author(s):  
H Chawner ◽  
A D P Howard ◽  
H L Gomez ◽  
M Matsuura ◽  
F Priestley ◽  
...  
Keyword(s):  
Radio Emission ◽  
Supernova Remnant ◽  
Far Infrared ◽  
Large Mass ◽  
Dust Devils ◽  
Infrared Observations ◽  
X Ray ◽  
Ss 433 ◽  
Multiple Regions ◽  
Tail Structure

ABSTRACT We present complicated dust structures within multiple regions of the candidate supernova remnant (SNR) the ‘Tornado’ (G357.7–0.1) using observations with Spitzer and Herschel. We use point process mapping, ppmap, to investigate the distribution of dust in the Tornado at a resolution of 8 arcsec, compared to the native telescope beams of 5–36 arcsec. We find complex dust structures at multiple temperatures within both the head and the tail of the Tornado, ranging from 15 to 60 K. Cool dust in the head forms a shell, with some overlap with the radio emission, which envelopes warm dust at the X-ray peak. Akin to the terrestrial sandy whirlwinds known as ‘dust devils’, we find a large mass of dust contained within the Tornado. We derive a total dust mass for the Tornado head of 16.7 $\rm M_{\odot }$, assuming a dust absorption coefficient of κ300 = 0.56 $\rm m^2\, kg^{-1}$, which can be explained by interstellar material swept up by a SNR expanding in a dense region. The X-ray, infrared, and radio emission from the Tornado head indicate that this is a SNR. The origin of the tail is more unclear, although we propose that there is an X-ray binary embedded in the SNR, the outflow from which drives into the SNR shell. This interaction forms the helical tail structure in a similar manner to that of the SNR W50 and microquasar SS 433.

scholarly journals Radio Emitting X-Ray Binary Stars

1996 ◽  
Vol 158 ◽  
pp. 371-374
Author(s):  
R. E. Spencer
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Radio Emission ◽  
Binary Stars ◽  
X Ray ◽  
Ss 433 ◽  
Normal Star ◽  
Large Numbers ◽  
X Ray Binaries

Some of the most astrophysically interesting objects are found among the radio-emitting X-ray binary stars (REXRB). The class includes the well-studied objects such as SS 433, Cyg X-3 and Sco X-1. The recent discoveries of relativistic ejection of radio knots in the X-ray transients 1915+105 (Mirabel & Rodriguez 1994) and 1655–40 (Hjellming & Rupen 1995) well illustrate the extreme nature of some of these objects.X-ray binaries are semi-detached binary stars in which matter is transfered from a more or less normal star onto a neutron star or black hole. X-ray satellites have detected large numbers of these objects (193 in a recent catalogue by van Paradijs 1995). However only a small fraction of these are known to have radio emission (e.g. Hjellming 1988).

scholarly journals Time-dependent search for neutrino emission from X-ray binaries with the ANTARES telescope

2017 ◽  
Vol 2017 (04) ◽  
pp. 019-019 ◽  
Author(s):  
A. Albert ◽  
M. André ◽  
G. Anton ◽  
M. Ardid ◽  
J.-J. Aubert ◽  
...  
Keyword(s):  
Neutrino Emission ◽  
Time Dependent ◽  
X Ray ◽  
X Ray Binaries
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