Changeset 6764

Timestamp:

03/07/05 15:16:49 (20 years ago)

Author:

hbartko

Message:

*** empty log message ***

File:

• trunk/MagicSoft/GC-Proposal/GC.tex (modified) (5 diffs)

trunk/MagicSoft/GC-Proposal/GC.tex

@@ -105 +105 @@
 \section{Introduction}
 
+%<<<<<<< GC.tex
+
+%The Galactic Center (GC) region contains many unusual objects which may be responsible for the high energy processes generation gamma rays \cite{Aharonian2005,Atoyan2004,Horns2004}. The GC is rich in massive stellar clusters with up to 100 OB stars \cite{GC_environment}, immersed in a dense gas within the volume of 300 pc and the mass of $2.7 \cdot 10^7 M_{\odot}$, young supernova remnants e.g. G0.570-0.018 or Sgr A East, and nonthermal radio arcs. The dynamical center of the Milky Way is associated with the compact radio source Sgr A$^*$, which is believed to be a massive black hole \cite{GC_black_hole,Melia2001}. An overview of the sources in the GC region is given in figure \ref{fig:GC_sources}. Some data about the Galactic Center are summarized in table \ref{table:GC_properties}.
+%=======
 The Galactic Center (GC) region contains many unusual objects which may be 
 responsible for the high energy processes generating gamma rays 
@@ -110 +114 @@
 clusters with up to 100 OB stars \cite{GC_environment}, immersed in a dense 
 gas within a radius of 300 pc and the mass of $2.7 \cdot 10^7 M_{\odot}$, 
-young supernova remnants e.g. G0.570-0.018 or Sgr A East, and nonthermal radio arcs. An overview of the sources in the GC region is given in figure \ref{fig:GC_sources}. Some data about the Galactic Center are summarized in table \ref{table:GC_properties}.
+young supernova remnants e.g. G0.570-0.018 or Sgr A East, and nonthermal radio arcs. The dynamical center of the Milky Way is associated with the compact radio source Sgr A$^*$, which is believed to be a massive black hole \cite{GC_black_hole,Melia2001}. An overview of the sources in the GC region is given in figure \ref{fig:GC_sources}. Some data about the Galactic Center are summarized in table \ref{table:GC_properties}.
+%>>>>>>> 1.15
 
 \begin{table}[h]{\normalsize\center
@@ -196 +201 @@
 \end{table}
 
+
 \section{Scientific Case} 
 
 
-High energy gamma rays can be produced in the GC in the non-thermal radio filaments by high-energy leptons which scatter background infrared photons from the nearby ionized clouds \cite{Pohl1997,Aharonian2005}, or by hadrons colliding with dense matter. These high energy hadrons can be accelerated by the massive black hole \cite{GC_black_hole}, associated with the Sgr A$^*$, supernovae or an energetic pulsar. Alternative mechanisms invoke the hypothetical annihilation of super-symmetric dark matter particles (for a review see \cite{jung96}) or curvature radiation of protons in the vicinity of the central super-massive black hole \cite{GC_black_hole,Melia2001}.
-
-
-In order to shed new light on the high energy phenomena in the GC region, and constrain the models mentioned above, new observations with high sensitivity, good spectra reconstruction and angular resolution are necessary.
-
-For the interpretation of the observed gamma flux the following observables are very important:
+In the GC region high energy gamma rays can be produced in different sources:
+
+\begin{itemize}
+\item{entire innermost 10 pc region (interaction between cosmic rays and the dense ambient gas)}
+\item{non-thermal radio filaments  \cite{Pohl1997}}
+\item{young SNR Sgr A East \cite{Fatuzzo2003}}
+\item{in the compact radio source Sgr A*}
+\item{central part of the dark matter halo.}
+\end{itemize}
+
+It is quite possible that some of these potentioal gamma-ray production sites contribute comparably to the the observed TeV flux.
+
+
+% in the non-thermal radio filaments by high-energy leptons which scatter background infrared photons from the nearby ionized clouds \cite{Pohl1997,Aharonian2005}, or by hadrons colliding with dense matter. These high energy hadrons can be accelerated by the massive black hole \cite{GC_black_hole}, associated with the Sgr A$^*$, supernovae or an energetic pulsar. Alternative mechanisms invoke the hypothetical annihilation of super-symmetric dark matter particles (for a review see \cite{jung96}) or curvature radiation of protons in the vicinity of the central super-massive black hole \cite{GC_black_hole,Melia2001}.
+
+
+In order to shed new light on the high energy phenomena in the GC region, and constrain the emission mechanisms and sources, new observations with high sensitivity, good spectra reconstruction and angular resolution are necessary. For the interpretation of the observed gamma flux the following observables are very important:
 
 \begin{itemize}
 \item{source location, source extension}
 \item{time variability}
-\item{energy spectrum}
+\item{energy spectrum.}
 \end{itemize} 
 
@@ -223 +240 @@
 
 
-
-\subsection{Leptonic Models}
-
-
-\subsection{Hadronic Models}
+\subsection{Emission from SgrA$^*$}
+
+
+\cite{Aharonian2005,Atoyan2004}
+
+\subsubsection{Leptonic Models}
+
+
+\subsubsection{Hadronic Models}
 
 
@@ -233 +254 @@
 
 
-\subsection{Dark Matter}
+\subsection{Dark Matter Annihilation}