Photometric Analysis of CME in the rising phase of solar cycle 24

As world become more technologically advanced it become more important to study and forecast solar events which materialize by solar activity, the Sun goes through solar activity cycle, where every 11 year. In this investigation the highest position in the rising phase of solar cycle 24 had been studied by analyzing the photometric observations of coronal mass ejection (CME) for the year 2013 for the months 2,3,4,5 that were derived from Large Angle and Spectrometric Coronagraph Experiment (LASCO), which is one of the scientific systems in the spacecraft Solar and Heliospheric Observatory (SOHO), that was located close Lagrangian point L1. From all previous observations and from the intensity time profile of it, the onset time had been calculated and from it the injection time of CME had been measured in order to find the lift of time and the associated flares. And also from the intensity-time profile any clear raising from background give indication for solar event, thus, the roots of the eruption in the sun will be determined. It had been concluded that The important event for this year in March and May also the acceleration of the energetic particle not only in the interplanetary, but also in the location of the event in the corona of the Sun, and it had been found that the event increased gradually with adopted months (2, 3, 4, 5). Also it has been noticed that most of solar events have multi eruption phenomena.


1.INTRODUCTION
The Sun goes through what it call a solar activity cycle, where every 11 year it will go from a very low period of solar activity, meaning a Sun spot and solar wind to another period of law activity and in between it goes through what it call solar maximum. At solar maximum, sun has a very complicated magnetic field structure, and there for it creates a lot more sun spot and solar wind like flare and Coronal Mass Ejection, it is very important to be able to forecast and investigate solar events because they can affect our technology, satellite, they can power grids to be affected. Coronal Mass Ejections (CMEs) have been observed since the 1970s but in the last 15 years they have moved to the forefront of coronal research as evidenced by hundreds of publications [1]. This large amount of work is driven by the availability of continuous solar observations from the instrumentation aboard the SOHO mission [2] which is located in L1. The Large Angle and Spectroscopic Coronagraph (LASCO) suite [3], in particular, has revolutionized CME analysis with high cadence, high spatial resolution and high sensitivity observations of these events. Since the early phases of the mission, a concerted effort was initiated to generate a comprehensive event list based on visual inspection of the images and manual measurements of several CME properties such as speed, width, and position angle. The LASCO CME list grew to more than 21,000 events by mid-2013 and is the largest collection of CME properties readily available online. This resource has been used extensively to study various CME properties [4] [5]. In 2008, the LASCO instruments reached another milestone. They provided the first ever CME database to cover a full solar cycle with a single instrument, thus opening investigations to the solar cycle dependence of CME properties [5] without having to worry about inter-instrument differences. . The aim of this study is to determine the eruption on the Sun and find the injection time of CME in order to find the effective events (distinguish the event from background).And thus to realize the impact of these events on the solar cycle 24. CMEs are measured and their basic attributes are cataloged in a data base known as the SOHO/LASCO CME Figure.(1).The catalog also contains digital data, movies, and plots for each CME so detailed scientific investigations can be performed on CMEs and related phenomena such as flares, radio bursts, solar energetic particle events, and geomagnetic storms.

2.OBSERVATIONS AND DATA ANALYSIS
The Large Angle and Spectrometric Coronagraph (LASCO) on board SOHO has unprecedented dynamic range and large field of view obtaining coronal images of very high quality [3].Although CMEs originate from closed magnetic field regions such as active regions, filament regions, or a combination. There are several groups involved in developing models of CMEs to understand CME initiation and interplanetary propagation with the ultimate aim of quantifying the CME impact on earth and hence on the society. Both empirical and physics-based models need real data to test with. CME observations were obtained by visual inspection of coronagraph images, and many of these "manual" catalogs of CMEs observed by LASCO C2 and C3 coronagraphs are now on-line [8]  1-The linear profile provided by http : //www:decent.fi/soho/index:php.
In the linear fit the changes during high-intensity periods are more visible than in logarithmic view and thus it might be easier to see if the changes were due to local effect or they have a velocity dispersion and belong to an event on the Sun.
Logarithmic scale is used by most researchers and gives the general view of the events [11]. particles. As to the particle events, we determined the onset time for particles traveling at the Archimedean spiral length of 1.2 Astronomical Unit (AU), which is often used in the event onset studies [12]. It is possible to fit the release time of particles from the Sun to the path length travelled [11].

3.APPLICATIONS AND DISCUSSION
In this study the data for the year 2013 for the months February, March, April and May have been analyzed. For January the data was not clear for technical reason related to the space lab. ERNE. From the analysis of the data through the intensitytime profile as shown in Figures.(2,3,4,5,6,7) and by using the above equations, firstly the important events have been identified, secondly CPA, the speed and width of CME and the acceleration have been calculated . Table.(1) shows all these results.
The roots of eruption in the Sun have been determined. All data were taken for resolution time of 10 Min from ERNE.