Real-time Classification of Massive Time-series Data Streams
Real or Bogus
AAAC Meeting
moon
4096 X 2048 CCD images - over 3000 per night
Real or Bogus
AAAC Meeting
230 bogus candidates, 2 variable stars, 4 asteroids and the youngest Type Ia supernovae observed to date….
PTF10ygu: Caught
2 days after explosion
Citizen Scientists…
AAAC Meeting
http:// supernova.galaxyzoo.org keeps chugging along (Smith et al., 2010)
Typically we have them scan ~200 candidates in 12 hrs after the night is finished. They get the list of the top 100 real-bogus, top 100 S/N, and top 100 via host-size of all new candidates.
Peaked @ mag 9.9, making it the 5th brightest SN in last 100 years.
AAAC Meeting
Peter Nugent
SYNAPPS spectrum synthesis fits on NERSC’s Hopper commenced 1 hour after first spectrum was reduced.
Finished analysis 30 hours after SN was first detected!
Ca II
Si II
S II
Mg II
Fe II
O I
Ca II
AAAC Meeting
Peter Nugent
AAAC Meeting
Peter Nugent
Rules out red giant companions and a lot of double degenerate models.
AAAC Meeting
Peter Nugent
HST Pre-imaging of the field where SN 2011fe was found.
AAAC Meeting
Peter Nugent
Constraints on the progenitor system.
Basically all we can have are a double degenerate system or a low mass main sequence companion.
Nature: Nugent et al. and Li et al.
AAAC Meeting
Peter Nugent
DOE/HEP: NERSC computing facilities, SCIentific Discovery through Advanced Computing program and staff and scientific leadership in the SN Ia experiment for PTF.
NSF: Direct support of PTF and support from the Cyber Enabled Discovery and Innovation Program - real-time classification.
NASA: Swift, Chandra and HST for both pre-explosion imaging (optical and x-ray) and follow-up after discovery in the ultra-violet.