Changeset 6853


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Timestamp:
03/18/05 14:49:02 (20 years ago)
Author:
hbartko
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  • trunk/MagicSoft/GC-Proposal/GC.tex

    r6852 r6853  
    6161
    6262At La Palma, the GC culminates at about 58 deg zenith angle (ZA). It can be
    63 observed with MAGIC at up to 60 deg ZA, between
    64 April and late August, yielding a total of 150 hours without moon per year.
    65 The expected integral flux above 700 GeV derived from
    66 the HESS data is $(3.2 \pm 1.0)\cdot 10^{-12}\mathrm{cm}^{-2}\mathrm{s}^{-1}$.
     63observed with MAGIC at up to 60 deg ZA, between April and late August, yielding a total of 150 hours without moon per year.
     64The expected integral flux above 700 GeV derived from the HESS data is $(3.2 \pm 1.0)\cdot 10^{-12}\mathrm{cm}^{-2}\mathrm{s}^{-1}$.
    6765Comparing this to the expected MAGIC sensitivity from MC simulations, this
    6866could result in a 5 $\sigma$ detection in about $1.8\pm0.5$ hours.
     
    8583In order to collect a data sample comparable in size to those of the other
    8684experiments and to be able to measure the energy spectrum, 40 hours of
    87 observation time are requested. This 40 hours will be split into 20 hours ON
    88 and 20 hours dedicated OFF data or they will be devoted to observations in
    89 the wobble mode. In addition, 60 hours of observation during moonshine are
    90 applied for.
     85
     86observation time are requested. The observations should be preferably conducted in the wobble mode or the 40 hours split into 20 hours ON and 20 hours dedicated OFF data taking. For the final decision dedicated studies are being carried out. In addition, 60 hours of observation during moonshine are applied for.
     87
    9188\end{abstract}
    9289
     
    440437
    441438
    442 The GC culminates at about 58 deg ZA in La Palma. Below 60 deg ZA, it is visible between April and late August for about 150 hours. The GC region has a quite high and non-uniform level of background light from the night sky. This together with the large ZA requires to take either dedicated OFF data or to take data in the wobble mode (see Section \ref{section:skydirections}).
     439The GC culminates at about 58 deg ZA in La Palma. Below 60 deg ZA, it is visible between April and late August for about moon-less 150 hours. Moreover there are more than 100 hours in the same ZA range with moon light.
     440
     441The GC region has a quite high and non-uniform level of background light from the night sky. This together with the large ZA requires observations in the wobble mode (see Section \ref{section:skydirections}) or to take dedicated OFF data.
     442 
    443443%Since the LONS level is in any case very large moon observations are considered in addition to the normal observations.
    444444
     
    515515\section{Requested Observation Time}
    516516
    517 Based on the above estimates, a 5$\sigma$ excess is expected to be observed in about 2 hours, under optimal conditions. To acquire a data set which is comparable in size to those of the other experiments at least 40 hours of observation time are requested. These 40 hours may be either split into 20 hours ON and 20 hours OFF data taking or be devoted exclusively to data taking in the wobble mode. At present, the prefered mode is the wobble mode. However, a final decision has not yet been taken.
     517Based on the above estimates, a 5$\sigma$ excess is expected to be observed in about 2 hours, under optimal conditions. To acquire a data set which is comparable in size to those of the other experiments at least 40 hours of observation time are requested. These 40 hours may be either split into 20 hours ON and 20 hours OFF data taking or be devoted exclusively to data taking in the wobble mode. At present, the prefered mode is the wobble mode. However, a final decision will be taken based on dedicated studies being carried out.
    518518
    519519As pointed out in Section \ref{section:feasibility}, all data should be taken at the
    520520smallest possible zenith angles between culmination at about 58 deg and 60
    521 deg. This limits the data taking interval to about 1 hour per night between
    522 April and August.
    523 
    524 
    525 To increase statistics at high energies we propose to take additional data during moonshine. Also in this case, the maximum ZA of 60 deg should not be exceeded.
     521deg starting in April. To increase statistics we propose to take data during moonshine in addition. Also in this case, the maximum ZA of 60 deg should not be exceeded.
     522
     523%This limits the data taking interval to about 1 hour per night between
     524%April and August.
     525
     526
    526527
    527528In order to take part in exploring the exciting physics of the GC
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