Quasar Mesolensing - Direct Probe to Substructures around Galaxies

نویسندگان

  • Atsunori Yonehara
  • Masayuki Umemura
  • Hajime Susa
چکیده

Atsunori Yonehara Center for Computational Physics, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, 305-8577, JAPAN [email protected] Masayuki Umemura Center for Computational Physics, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, 305-8577, JAPAN [email protected] and Hajime Susa Institute of Theoretical Physics, Rikkyo University, Nishi-Ikebukuro 3-34-1, Toshima-ku, Tokyo, 171-8501, JAPAN [email protected]

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

EMISSION-LINE OBJECTS FROM A PRELIMINARY UKST OBJECTIVE PRISM SURVEY

A visual search has been made of four fields using United Kingdom 1.2m Schmidt Objective Prism plates with a reciprocal dispersion of 1 180 A/mm at HP. Such plate material is ideally suited to searches for emission-line galaxies. We present a catalogue of 53 emission-line objects, which comprises 45 galaxies, where individual HI1 regions are resolved in 16 bright galaxies; 8 are emission li...

متن کامل

The Small-scale Environment of Quasars

Where do quasars reside? Are quasars located in environments similar to those of typical L galaxies, and, if not, how do they differ? An answer to this question will help shed light on the triggering process of quasar activity. We use the Sloan Digital Sky Survey to study the environment of quasars and compare it directly with the environment of galaxies. We find that quasars (Mi ≤ −22, z ≤ 0.4...

متن کامل

HI-selected Galaxies As a Probe of Quasar Absorption Systems

We investigate the properties of local HI-selected galaxies detected in blind radio surveys by using semi-analytic galaxy formation models in the hierarchical structure formation scenario. By drawing a detailed comparison between the properties of the HI-selected galaxies and the quasar absorption systems, we investigate a link between the local galaxy population and the quasar absorption syste...

متن کامل

Near-infrared Search for C Iv Absorption Counterparts along the Line-of-sights to Pair Quasars

We carried out a Subaru and UKIRT near infrared imaging survey for Hα emitting galaxies around two pair quasar systems (Q0301-005/Q0302-003 and Q2343+125/Q2344+125), and a triple quasar system (KP76/KP77/KP78). Narrow band near infrared filters covering the Hα emission expected for galaxies at the confirmed C iv absorption redshift toward the quasar systems were used for this survey. These quas...

متن کامل

Environmental Effect on the Associations of Background Quasars with Foreground Objects: I. Analytic Investigation

The associations of the angular positions of background quasars with foreground galaxies, clusters of galaxies and quasars are often attributed to the statistical lensing by gravitational potentials of the matter along the lines of sight, although it has been known that none of the individual objects (galaxies, clusters or quasars) are able to fully explain the reported amplitudes of the quasar...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003