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
2-10 keV log N - log S relation measured in the Galactic Plane
Hands et al. (2004)
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
Multi-wavelength Investigation of
AX J163252-4746
Multi-wavelength Investigation of
AX J163252-4746
Multi-wavelength Investigation of AX J163252-4746
Multi-wavelength Investigation of AX J163252-4746
AX J163252-4746 a WR-WR binary?
AX J163252-4746 a WR-WR binary?
AX J163252-4746 a WR-WR colliding-wind binary
AX J163252-4746 a WR-WR colliding-wind binary
AX J162246-4946 a candidate Pulsar Wind Nebula
AX J162246-4946 a candidate Pulsar Wind Nebula
AX J184447-0305 another candidate
Pulsar Wind Nebula
AX J184447-0305 another candidate
Pulsar Wind Nebula
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