Recent Events Reported by Observers

Detected by Wei Liu, Submitted at 2016-06-16T02:12:27

2016-05-26T04:48:23 --> 2016-05-26T06:10:49

An active region prominence at the NE limb was captured in part in the FOV, exhibiting dynamic flows.

Detected by Wei Liu, Submitted at 2016-06-16T02:07:32

2016-05-25T23:16:47 --> 2016-05-25T23:48:25

Coronal rain (a bit high altitude) over AR 12546 at SW limb

Detected by Wei Liu, Submitted at 2016-06-16T02:03:41

2016-05-26T08:52:45 --> 2016-05-26T10:00:17

Brightenings in sigmoid loops in AR 12548 on the trailing edge, to the east of the leading sunspot.

Detected by Wei Liu, Submitted at 2016-06-16T01:54:28

2016-05-26T20:49:32 --> 2016-05-26T21:42:57

Coronal rain along low-lying loops in AR 12546 at SW limb, captured in this 400-step raster scan.

Detected by Wei Liu, Submitted at 2016-06-16T01:50:16

2016-05-27T04:37:45 --> 2016-05-27T06:33:34

AR prominence at NE limb showed wavy motions, similar to those reported by Okamoto et al. (2007) with Hinode/SOT seen in the Ca II H line. The vertical step in the off-limb portion of the image is an artifact possibly due to scattered light in the optics. It's low intensity, on the order of 1 DN, should not be a concern for science data.

Detected by Wei Liu, Submitted at 2016-06-16T01:43:20

2016-05-28T13:08:29 --> 2016-05-28T14:32:20

A prominence at SW limb showed a vertical structure, similar to the one reported earlier for the same day. This structure exhibited dynamic, wavy flows, and ascending motions of some material.

Detected by Wei Liu, Submitted at 2016-06-16T01:36:53

2016-05-29T06:12:35 --> 2016-05-29T06:58:02

A small-sized flare occurred in AR 12548 in a routine 400-step raster, but unfortunately after the slit passed the AR. The flare showed several ribbons in segments, and at least two episodes of brightenings.

Detected by Wei Liu, Submitted at 2016-06-15T20:15:44

2016-05-31T23:30:26 --> 2016-06-01T03:48:09

Prominence at NW limb showed circular flows and undulating/wavy motions (e.g., 01:15), amidst irregular flow patterns in the middle of the prominence volume.

Detected by Wei Liu, Submitted at 2016-06-15T20:09:03

2016-05-28T23:58:31 --> 2016-05-29T03:26:39

400-step raster thru a quiescent prominence in coronal cavity at NW limb. There were dynamic flows, especially the circular flows at the prominence apex, suggestive of helical field lines within a flux rope. Note the x-dimension appears to be squeezed, possibly due to asymmetric x,y binning.

Detected by Wei Liu, Submitted at 2016-06-15T20:00:46

2016-05-28T06:17:50 --> 2016-05-28T06:56:15

An active region prominence on SW limb had a vertical structure that was similar to vertical threads in quiescent prominence with meandering flows. At ~06:45, the top portion of this vertical structure was disconnected and rose upward, resembling the launch of a CME, but on a much smaller spatial scale. These were seen at 1400 \\AA, but 2796 \\AA\\ SJIs show the predominant horizontal threads as commonly seen in AR prominences. The vertical structure might have be a separate entity from the horizontal AR prominence, although they appear cospatial in LOS projection. Also note to far right hand side of the off-limb FOV - a dark, faint feature of inner-tube shape with a central vertical stick, which are on the order of 1/2-1 DN in intensity and possibly caused by scatter light in the optics. This primarily appear in 1400 and occasionally in 1330 SJI. Given the extremely low intensity of this artifact, it should not be a concern for science data.

Detected by Wei Liu, Submitted at 2016-06-15T19:41:16

2016-05-27T12:10:30 --> 2016-05-27T14:31:22

Dynamic flow patterns in this active region prominence at northeast limb. Most flows follow well defined loop-shaped paths, displaying some undulating motions - possibly resembling those Alfvenic waves seen with Hinode/SOT, e.g., by Okamoto et al. (2007 Sci). Note the turbulent-like flows at the apex of the main prominence.

Detected by Wei Liu, Submitted at 2016-06-15T19:33:26

2016-05-30T22:29:10 --> 2016-05-30T23:06:00

AR 12548 400-step scan revealed an AR prominence to the north and very sparse coronal rain to the south, with a low activity level.

Detected by Wei Liu, Submitted at 2016-06-15T19:28:10

2016-05-31T10:07:56 --> 2016-05-31T11:35:46

Coronal rain along loops in AR 12548 at NW limb. Note in 2796 SJI images, there was an active region prominence at the same location, with horizontal threads.

Detected by Wei Liu, Submitted at 2016-06-15T19:20:44

2016-05-26T16:23:33 --> 2016-05-26T16:52:38

B-class flare in the trailing edge of the sunspot in AR 12548 near polarity inversion line, with BBSO coordination. There were at least two episodes of brightenings, first around 16:32 and the second one near 16:47 UT. No clear ribbon motion. The western end of the faring loops were located within the sunspot.

Detected by Wei Liu, Submitted at 2016-06-15T18:52:44

2016-05-26T10:36:08 --> 2016-05-26T11:33:05

Loop brightenings and dynamic flows in the eastern portion (trailing edge) of AR 12548. This is right under the slit. However, the flaring-like activity in the northern portion of FOV was beyond slit coverage.

Detected by Wei Liu, Submitted at 2016-06-15T18:42:23

2016-05-25T11:09:49 --> 2016-05-25T12:22:17

Very clear penumbra running waves, almost planar (not circular) in shape, possibly due to the near west limb location. The waves show asymmetric distribution around the sunspot, only visible traveling west (not east).\n\nIn the lower-right corner of FOV, there were loop brightenings, possibly due to a small flare, but the slit was not on these loops.\n\nThere are also quite many brightenings under the slit, especially in the northern portion (penumbra micro-jets?).

Detected by Joten Okamoto, Submitted at 2016-06-15T15:01:45

2016-06-11T22:10:05 --> 2016-06-11T22:52:51

Erupting prominence close to AR 12553 at the east limb.

Detected by halocme, Submitted at 2016-06-14T05:26:11

2016-06-07T22:00:06 --> 2016-06-08T22:00:06

This looks like a post eruption arcade and can be a manifestation of slow but major restructuring in the southen hemisphere on the backside as indicated by STEREO-A EUVI images.

Detected by halocme, Submitted at 2016-06-14T05:12:40

2016-06-09T17:50:22 --> 2016-06-09T19:30:22

A compact ejecta was seen first in absorption then in emission as if it swam through coronal structures finally toward the equator. It is not clear that this had to do with activities in the prominences to north and south.

Detected by halocme, Submitted at 2016-06-14T04:53:57

2016-06-08T10:40:10 --> 2016-06-08T13:40:10

Apart from the weak on-disk activity, it is hard to see this eruption in intensity images. Large loop structures are seen to move off the limb twice.