OBSERVATIONS OF THE INTERSTELLAR MAGNETIC FIELD IN THE OUTER HELIOSHEATH: VOYAGER 1

New observations of the magnetic field B from approximate to 2014.7 through 2016.3288, together with the previous observations dating back to 2012 August 25, show that Voyager 1 continued to observe draped interstellar magnetic fields in the outer heliosheath. During this time, the direction of B was nearly constant (+/- 3 degrees), with no significant long-term trend. The slope of a linear least squares fit to the variation of the magnetic field strength B with time is (0.001 +/- 0.001) nT yr(-1), consistent with no net change, and the average B = (0.48 +/- 0.04) nT. The new observations show a second "disturbed interval" in which B was <= 1.2 < B > for approximate to 267 days. This interval began with a weak shock on 2014/236 (2014.6438), contained oscillations in B with a 28 day period, and possibly ended with a pressure balanced structure or a reverse shock. It is likely this disturbed interval was associated with Sun/solar wind disturbances that impacted the heliopause and produced disturbances that propagated into the outer heliosheath. A quiet interval containing weaker less variable B was observed from approximate to 2015.3700 until at least 2016.0. Unlike the previous quiet interval observed in the outer heliosheath, the direction of B did not change linearly and could not be extrapolated to the center of the IBEX ribbon.