SUMMARY OF SEQUENCE NUMBER 500093
SUMMARY OF SEQUENCE NUMBER 500093
Title: SURVEYING THE AFTERMATH OF A STARQUAKE
Observer: HALPERN
Subject Category: SN, SNR, and isolated NS
Seq: 500093 ObsId: 00364
Long-term Plan bin: no LTS bin
ABSTRACT
The Vela pulsar underwent a sudden spinup yesterday morning (Jan 16.3 UT), the largest such event in the thirty years since its discovery. We propose to take advantage of this fortuitous event by observing the pulsar and its surrounding synchrotron nebula three times with the Chandra HRC with the goals of 1) discriminating among models for such spinup events, 2) constraining the equation of state of neutron star matter, and 3) monitoring the effects of the event on the surrounding synchrotron nebula. The Vela nebula will produce a count rate of ~3.8 c/s in the HRC-I, and the pulsar's pulsed emission should yield ~ .15 ct/s. Observations of 50 ksec duration will thus yield sensitivities to a 1% change in the nebula (4 sigma) and a change of 15% in any of 20 phase bins for the pulse (3 sigm
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| PSR B0833-45 |
128.836250 | -45.176583 |
50.00000 |
HRC-I |
NONE |
DDT |
yes |
no |
yes |
no |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
