Gemma Anderson ChIcAGO Chasing the Identification of ASCA Galactic Objects.
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Transcript of Gemma Anderson ChIcAGO Chasing the Identification of ASCA Galactic Objects.
Gemma AndersonGemma Anderson
ChIcAGOChIcAGOChChasing the asing the IIdentifidentificcation of ation of AASCASCA GGalactic alactic OObjectsbjectsChChasing the asing the IIdentifidentificcation of ation of AASCASCA GGalactic alactic OObjectsbjects
Identification ProcessCompact
(Un-resolved) ASCA Sources
Compare source position with existing optical and infrared surveys
2MASS, DSS, GLIMPSE
Sub-arc second localisation with
Chandra
Counterpart
Source Identified
-- Soft X-rays from nearby star
-- Hard X-rays from highly absorbed massive star
-- AGN, HMXBNo Counterpart
-- Usually hard X-ray sources
Image deeply in the NIR (PANIC instrument on Magellan)
Counterpart
No Counterpart
Deeper O/IR observations with larger telescopes, colour statistics, X-ray timing analysis
Requires Further follow-up
http://objekty.astro.cz/galaxie/sondy/chandra/chandra.html
Obtain optical spectra of counterpart
Image deeply in the optical (IMACS instrument on Magellan)
Counterpart No optical Counterpart
Obtain optical spectra (IMACS)
Obtain infrared spectra (OSIRIS on SOAR)
-- Possible PSR, magnetar, AGN, PWN
Source IdentifiedCounterpart or
No Counterpart
-- Possible CV, CWB, X-ray binary, AGN, Massive star
statistically identified