Search for an Infrared Counterpart to SGR 1900+14

Details Search for an Infrared Counterpart to SGR 1900+14 Search for an Infrared Counterpart to SGR 1900+14

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...537..429e&link_type=abstract

The Astrophysical Journal, Volume 537, Issue 1, pp. 429-432.

Astronomy and Astrophysics

Astronomy

4

Gamma Rays: Observations, Infrared: Stars, Stars: Individual (Sgr 1900+14)

Scientific paper

We used the Palomar 1.5 m telescope to obtain infrared (IR) images of the field of the soft gamma-ray repeater SGR 1900+14 on 1998 June 4 UT, shortly after its 1998 May/June outburst. We find no IR counterpart within a 2" radius of the position of SGR 1900+14 down to limiting magnitudes of J>18.1 mag, H>16.6 mag, and Ks>15.3 mag (90% confidence level). Given the estimated distance and extinction to SGR 1900+14, we can rule out any possible counterpart more luminous than a B8 main-sequence star, including any star of luminosity class I or II. We can also rule out a luminous synchrotron afterglow such as the one seen following the 1998 August outburst.

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