Observation de population de sursauts Gamma a haut Redshift

الموضوعات

علوم تطبيقية وتكنولوجية

روابط وملفات

التعريف والنوع

رقم الوثيقة

00615240-1daf-40f5-bf1b-a83193a430c5

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

ماستر (LMD)

نوع الملف

pdf text

أسماء الملفات

2263791_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Hannachi Zitouni ","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Larbi Lazazi ","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Zoheyr Megdache ","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

French

المصدر والدورية

اسم المصدر

Observation de population de sursauts Gamma a haut Redshift

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

The gamma ray burst (GRB) is a mysterious astrophysical phenomenon that was dis-covered at the end of 1967. The gamma ray bursts are very short (1 ms to 1000 s ) and high luminosity (L∼1050to 1054erg/s). The emitted photons are at high energy (from keV to GeV). They are the most powerful sources of energy in high Redshift.Goal:We will study in this subject the estimation, by Monte Carlo simulation, of the rate of GRBs of high Redshift z using a generic detector with a defined band of energy and sensitivity.Method:We focus on a synthetic population that reproduces properties of observed GRB detected by Swift.Results:We show that scintillators operating at relatively high energy levels (eg, tens of keV to a few MeV) can only detect the brightest GRBs with wide Redshift due to the link between the Energy at peak spectrum and bolometric luminosity. We conclude that the use of low-energy (for example in the X-ray radiation) detector with good sensitivity is better suited for observing a large number of high-redshift gamma-ray bursts.

كلمات الباحثين

sursaut gamma ;observations ;instrumentations ;d ́etecteurs ;haut Redshift

إشراف وإعداد

الإشراف

Hannachi Zitouni

الإعداد

Larbi Lazazi , Zoheyr Megdache

الاقتباسات الببليوغرافية