OGLE-IV Real-Time Transient Search

We present the design and first results of a real-time search for transients within the 650 sq. deg. area around the Magellanic Clouds, conducted as part of the OGLE-IV project and aimed at detecting supernovae, novae and other events. The average sampling of about 4 days from September to May, yielded a detection of 238 transients in 2012/2013 and 2013/2014 seasons. The superb photometric and astrometric quality of the OGLE data allows for numerous applications of the discovered transients.

Real-Time transients data

Archive of transients from 2012/2013 and 2013/2014 seasons.


Map of OGLE-IV fields used for search for transients in real-time with positions of detected transients.

Examples of SNe

Examples of various spectroscopically determined supernova types among transients detected by the OGLE-IV Transients Detection System.

Examples of SNe in centers

Nuclear transients of not obvious nature found within one pixel (0.26 arcsec) from the cores of their hosts.

Union cosmology

Hubble Diagram with OGLE-IV (black dots) and Union 2.1 sample (gray) of supernovae Type Ia along with Planck (flat) and open cosmological models.

The data including calibrated light curves, of all transients presented in the publication are available in the OGLE Internet archive

PLEASE cite the following paper when using the data or referring to these OGLE results:
Wyrzykowski et al., 2014, (arxiv:1409.1095)

Any comments about the results, the data and the form of their presentation are welcome. Send your messages to this address.