Chandra observations of SN 1987A: The soft X-ray light curve revisited

E. A. Helder, P. S. Broos, D. Dewey, E. Dwek, R. McCray, S. Park, J. L. Racusin, S. A. Zhekov, D. N. Burrows

Research output: Contribution to journalArticle

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Abstract

We report on the present stage of SN 1987A as observed by the Chandra X-Ray Observatory. We reanalyze published Chandra observations and add three more epochs of Chandra data to get a consistent picture of the evolution of the X-ray fluxes in several energy bands. We discuss the implications of several calibration issues for Chandra data. Using the most recent Chandra calibration files, we find that the 0.5-2.0 keV band fluxes of SN 1987A have increased by ∼6 × 10-13 erg s-1 cm-2 per year since 2009. This is in contrast with our previous result that the 0.5-2.0 keV light curve showed a sudden flattening in 2009. Based on our new analysis, we conclude that the forward shock is still in full interaction with the equatorial ring.

Original languageEnglish (US)
Article number11
JournalAstrophysical Journal
Volume764
Issue number1
DOIs
StatePublished - Feb 10 2013

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light curve
calibration
flattening
files
erg
energy bands
observatories
x rays
observatory
shock
time measurement
rings
energy
interactions
analysis

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Helder, E. A. ; Broos, P. S. ; Dewey, D. ; Dwek, E. ; McCray, R. ; Park, S. ; Racusin, J. L. ; Zhekov, S. A. ; Burrows, D. N. / Chandra observations of SN 1987A : The soft X-ray light curve revisited. In: Astrophysical Journal. 2013 ; Vol. 764, No. 1.
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Helder, EA, Broos, PS, Dewey, D, Dwek, E, McCray, R, Park, S, Racusin, JL, Zhekov, SA & Burrows, DN 2013, 'Chandra observations of SN 1987A: The soft X-ray light curve revisited', Astrophysical Journal, vol. 764, no. 1, 11. https://doi.org/10.1088/0004-637X/764/1/11

Chandra observations of SN 1987A : The soft X-ray light curve revisited. / Helder, E. A.; Broos, P. S.; Dewey, D.; Dwek, E.; McCray, R.; Park, S.; Racusin, J. L.; Zhekov, S. A.; Burrows, D. N.

In: Astrophysical Journal, Vol. 764, No. 1, 11, 10.02.2013.

Research output: Contribution to journalArticle

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AU - Park, S.

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