SUMMARY OF SEQUENCE NUMBER 700113

SUMMARY OF SEQUENCE NUMBER 700113

Title: IN SEARCH OF THE CENTRAL ENGINES OF LINERS

Observer: ERACLEOUS

Subject Category: Active Galaxies and Quasars

Seq: 700113 ObsId: 00808

Long-term Plan bin: no LTS bin

ABSTRACT

Low-ionization nuclear emission regions (LINERs) are quite common, occuring in at least 1/3 of all galaxies, and more frequently in specific galaxy types. The nature of the undrlying power source remains controversial since photionization from a low-luminosity AGN, photoionization by hot stars, and shock ionization are all plausible excitation mechanisms of the line-emitting gas. LINERs may well be a heterogeneous population. We propose to observe a small sample of 4 such objects with ACIS-I to address the question of their power source. We will exploit the ability of AXAF to deliver high-resolution X-ray images as well as spatially resolved spectra up to 10 keV to test the competing scenarios.

TARGET SUMMARY

TARGET NAME RADEC TIME SI GRAT TYPE TC ROLL PRE PHASE MULTI PRI
NGC 4736
192.721250
41.120472
50.00000
ACIS-S
NONE
GO
no
no
no
no
no
5

IMAGES

(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)

Roll/Visibility

PARAMETERS

Obscat Parameters