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Resolving the Decades-long Transient FIRST J141918.9+394036: An Orphan Long Gamma-Ray Burst or a Young Magnetar Nebula?

  • Authors: B. Marcote, K. Nimmo, O. S. Salafia, Z. Paragi, J. W. T. Hessels, E. Petroff, and R. Karuppusamy

2019 The Astrophysical Journal Letters 876 L14.

  • Provider: AAS Journals

Caption: Figure 4.

Apparent source size evolution. The red line shows the predicted apparent size evolution for a jet with parameters as those proposed by Law et al. (2018). The blue line and the lighter blue band show our measured apparent size and its 1σ uncertainty of θs = 3.9 ± 0.7 mas. The gray vertical line marks the source age at the time of our observation, assuming that it originally exploded in 1993.

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