High Resolution X-Ray Spectra A DIAGNOSTIC TOOL OF THE HOT UNIVERSE
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1 High Resolution X-Ray Spectra A DIAGNOSTIC TOOL OF THE HOT UNIVERSE Katarzyna Bensch Rosario González-Riestra María Santos-Lleó XMM-NEWTON / ESAC
2 The RGS Instruments THE REFLECTION GRATING SPECTROMETER HIGH RESOLVING POWER: 7 TO 38 Å [~ kev] SIMULTANEOUS OBSERVATIONS WITH EPIC AND OM RGS SPECTRA 9000 OBSERVATIONS RGS DESIGNED TO STUDY X-RAY EMISSION & ABSORPTION K-SHELL TRANSITION HELIUM-LIKE TRIPLETS OF C, N, O, Ne, Si, Ar L-SHELL TRANSITION of Fe DIAGNOSATIC TOOLS TO STUDY THE X-RAY SOURCES
3 Work 1. Identification of useful Spectra FITTING THE SPATIAL PROFILES 2. Classification of spectra: QUALITY TOP QUALITY / LOWER QUALITY SPATIAL EXTENT POINT-LIKE SOURCES / EXTENDED SOURCES
4 BiRD Browsing Interface for RGS Data START POINT: BiRD DATABASE ALL PUBLIC RGS 1 & RGS 2 Events file + spectra EACH ONE HAS ASSOCIATED: Simbad Object Class, Nh, z / vrad
5 Identification of useful Spectra Fitting Gaussian function to cross-dispersion profiles Seyfert 1 Galaxy Statistically bad fit = discarded except...
6 Identification of useful Spectra FITTING GAUSSIAN TO CROSS-DISPERSION PROFILE BiRD EVENTS FILES CALCULATING FLUX & ASSOCIATED ERROR BIRD SPECTGRA Defining minimum usability Parameters FWHM > 3 FWHM FWHM INTRINSIC RESOLUTION INTENSITY > 3 PEAK POSITION ON CCD: -100'' : 100'' AREA UNDER GAUSSIAN > 3 AREA FLUX ERROR > 10 Creation of a database with all information
7 QUALITY classification All useful observations 5045 (56 % of all) number of useful spectra
8 SPATIAL EXTENT classification Distribution of the widths (FWHM) of the spatial profiles ) KS A D KE S E I E EP L T C OIS E T E C N I J N R RETTING PO OU S (F I ED ES D EN URC T EX SO AVERAGE FWHM RGS1: 22''.2 ± 1''.6 RGS2: 20''.4 ± 1''.8 Point-like sources: 22''.2/20''.4 ± 3σ Extended sources: > 22''.2/20''.4 + 3σ
9 PROFILE EXTENSION classification POINT-LIKE SOURCES / EXTENDED SOURCES (RGS1) ALL USEFUL SPECTRA
10 Object types distribution TOP QUALITY MOST FREQUENT OBJECTS POINT-LIKE SOURCES SEYFERT 1 GALAXIES (410) EXTENDED SOURCES SUPERNOVAE REMNANT (99) LOW MASS X-RAY BINARIES (191) BL LAC -TYPE OBJECTS (125) CLUSTERS OF GALAXIES (233)
11 SPECTRA
12 Clusters of Galaxies
13 Seyfert 1 Galaxies
14 Seyfert 1 Galaxies High state / Low state
15 Seyfert 2 Galaxies
16 LINERs
17 QSOs
18 SNRs
19 Emission lines Stars Star Flare Star Variable Star -of BY Dra -of RS CVn -of BY Dra -of Orion Type -of beta Cep type -Rotationally T Tau-type Star Eclipsing binary -of Algol type -of W Uma type Spectroscopic binary Star in double system Double or multiple star High proper-motion Star Pre-main sequence Star
20 Flare Stars
21 T Tau-type Stars
22 Web page Catalogue & atlas of useful RGS spectra WILL BE AVAILABLE THROUGH THE BIRD WEB PAGE ANNOUNCED IN THE XMM-NEWTON NEWSLETTER
23 Conclusions: Atlas shows: Great potential of RGS data in archive useful observations very good quality Some object classes show: similar spectral properties (continuum shape/emission lines) While at the same time some object classes show: great diversity in spectral properties (continuum shape/emission lines) Some object types show significant changes in: Spectral properties and flux Some object types show: constant properties
24 What can be done in future The interpretation of the observations in terms of physical properties and mechanisms For instance: Different abundances for different objects in same class / different classes eg. SNR with or without Fe Different ionization eg. Fe XXIV in some objects Intrinsic variability eg. Flare Stars Environment eg. Absorption due to cloud crossing the line of sight in some AGNs T h a n k y o u f o r y o u r a t t e n t i o n!
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