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The Helioseismic & Magnetic Imager – Magnetic Investigations. HMI Data Processing. HINODE Spectropolarimetric Magnetic Field Inverted with HMI-like Algorithm by S. Tomczyk & J. Borrero (HAO) The three panels show Inclination, Azimuth & Magnetic Field Strength as observed May 7, 2007.

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Science Objectives, Observables, and Magnetic Data Product Teams

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Science objectives observables and magnetic data product teams

The Helioseismic & Magnetic Imager – Magnetic Investigations

HMI Data Processing

HINODE Spectropolarimetric Magnetic Field Inverted with HMI-like Algorithm by S. Tomczyk & J. Borrero (HAO)

The three panels show Inclination, Azimuth & Magnetic Field Strength as observed May 7, 2007

Data Product

HMI Data

Internal rotation Ω(r,Θ)

(0<r<R)

Spherical

Harmonic

Time series

To l=1000

Heliographic

Doppler velocity

maps

Filtergrams

J.Todd Hoeksema for the HMI Magnetic Team

Mode frequencies

And splitting

0

180

-180

180

0

3097

Internal sound speed,

cs(r,Θ) (0<r<R)

Full-disk velocity, v(r,Θ,Φ),

And sound speed, cs(r,Θ,Φ),

Maps (0-30Mm)

Local wave

frequency shifts

Ring diagrams

Doppler

Velocity

Carrington synoptic v and cs

maps (0-30Mm)

Time-distance

Cross-covariance

function

Tracked Tiles

Of Dopplergrams

Wave travel times

High-resolution v and cs

maps (0-30Mm)

ABSTRACT

The HMI investigation will study the origin of solar variability and will characterize and understand the Sun’s interior and the various components of magnetic activity.

Teams are forming to address the principle scientific goals of the mission. These topics, outlined in the HMI Science Plan (http://hmi.stanford.edu/doc/Science_Plan/HMI_Science_Plan.pdf) encompass a broad range of science that will be enabled by HMI magnetic field observations. The Co-I team desperately needs your participation to take full advantage of the opportunities provided.

Polarized filtergrams around the Fe I spectral line at 617.3 nm made with the HMI tunable narrow band filter enable determination of all three components of the vector photospheric magnetic field in half arc second pixels with a cadence of five minutes at all times.

Development of pipeline processing modules to produce the full menu of data products is currently underway. The final data products are presently being defined. Some STANDARD products will be computed at all times, others will be produced On DEMAND or during times of special interest. Some data products requiring intensive processing will only be produced On REQUEST when resources allow.

Egression and

Ingression maps

Wave phase

shift maps

Deep-focus v and cs

maps (0-200Mm)

HMI Science Analysis Plan – Magnetic Topics

Far-side activity index

Stokes

I,V

Line-of-sight

Magnetograms

Level-1

HMI Data

Line-of-Sight

Magnetic Field Maps

Filtergrams

Stokes

I,Q,U,V

Full-disk 10-min

Averaged maps

Vector Magnetograms

Fast algorithm

Vector Magnetic

Field Maps

Magnetic Data

Products

HMI Sun Testing- Early Images

AKosovichev

1-1A Tachocline

Vector Magnetograms

Inversion algorithm

Coronal magnetic

Field Extrapolations

Tracked Tiles

AKosovichev

2-1C Meridional Circulation

Tracked full-disk

1-hour averaged

Continuum maps

Coronal and

Solar wind models

Continuum

Brightness

Solar limb parameters

AKosovichev

3-1B Differential Rotation

Magnetic

Observables

Line-of-Sight

Magnetic Field Maps

Brightness Images

Brightness feature

maps

JBeck

4-1D Near-Surface Shear Layer

HMI Data Analysis Pipeline

THoeksema

EBenevolenskaya, TBai

5-2A Activity Complexes, Cycle

Line-of-sight

Magnetograms

THoeksema

6-2B Active Regions

Vector Magnetic

Field Maps

7-2C Sunspots

TBai

YLiu

8-2D Irradiance Variations

RBush

THoeksema,

JSchou, HAO

YLiu

9-3A Magnetic Shear

LM, KHayashi

10-3B Flare/CME Mag. Config

Coronal Magnetic Field

Extrapolations (non MHD)

YLiu, LM

11-3C Flux Emergence

KHayashi, LM

12-3D Magnetic Carpet+Heating

Vector

Magnetograms

YLiu, Schrijver

Schrijver, YLiu

13-4A Coronal Energetics AIA]1

KHayashi

YLiu, JSchou,

*HAO

14-4B Large-scale B, Ph+Cor

Surface Plasma Flows

KHayashi

15-4C Solar Wind + Evol, Struct

PScherrer

JBeck, YLiu,

16-5A Far-side Activity Evolution

TBai

17-5B Predicting A-R Emergence

XPZhao

18-5C IMF Bs Events

Continuum

Brightness

Coronal and

Solar wind Properties

??

19 Topology Structure over AR

RBush, JSchou

EBenevolenskay

XPZhao, KHayashi

20 B-Polar, Large/Small Int

HMI Vector Field Pipeline & Products

Increase s/n:

  • Standard HMI resolution

  • Rebinned data

    (retains temporal resolution)

  • Averaged data

    (retains spatial resolution)

  • Vector magnetic field in active regions:

    • In heliographic coordinates

    • In image coordinates

Magnetic Observables

HMI Data

Filtergrams

  • Full disk vector magnetic field:

    • In image coordinates

    • In spherical coordinates

Stokes I, Q, U, and V;

Vector Magnetograms

(|B|, inclination,

azimuth, …)

Vector Magnetic

Field Maps

  • Synoptic maps of vector field

  • (B_r, B_theta, B_phi):

    • Standard synoptic charts;

    • Synoptic frames;

    • Daily update synoptic maps.

Field Inversion

Calibration and Correction of Filtergrams

180 Degree Ambiguity Solver

  • Fast (potential or lfff);

  • Slower but better.

First Dopplergram

First Magnetogram

VECTOR MAGNETIC MAPS

“Ambiguous” Observables

SYNOPTIC PRODUCTS

Full disk vector field maps (standard)

(full resolution, 10-minute cadence)

Synoptic frame (standard)

(in a cadence of 1-day)

Magnetograms (standard)

(full disk, full resolution,

10-minute cadence?)

Full disk vector field maps (standard)

(full resolution, 6-hour cadence)

Daily update Synoptic map (standard)

(in a cadence of 1-day)

Vector magnetic field maps in AR patches (standard)

(in heliographic coord., full res., 6-hour cadence)

Magnetograms (standard)

(full disk, full resolution,

1-hour average)

Synoptic map (standard)

1-hour average vector magnetic field maps (standard)

(full disk, full resolution, 6-hour cadence)

Synoptic frame (on-demand)

(in a cadence of 30-minute)

Magnetograms (on-request)

(AR patches, full resolution,

2-minute cadence)

Vector magnetic field maps (on-demand)

(full disk, full resolution, 30-minute cadence)

Synoptic frame (on-demand)

(in a cadence of 30-minute)

Vector magnetic field maps (on-demand)

(AR patches, full resolution, 30-minute cadence)

Magnetograms (on-request)

(full disk, full resolution,

2-minute cadence)

Daily update Synoptic map (on-demand)

(in a cadence of 30-minute)

Vector magnetic field maps (on-request)

(full disk, full resolution, 2-minute cadence)

Synoptic frame (on-request)

(in a cadence of 2-minute)

Stokes I, Q, U and V (on-request).

Vector magnetic field maps (on-request)

(AR patches, full resolution, 2-minute cadence)

Daily update Synoptic map (on-request)

(in a cadence of 2-minute)

  • Science Objectives, Observables, and Magnetic Data Product Teams

  • Preliminary Magnetic Topic Group Affiliations

  • (Please Sign Up!!)

  • Observables

    • Line-of-sight magnetograms – THoeksema, JSchou, HAO, KD Leka

    • Vector magnetograms – YLiu, JSchou, HAO, SCouvidat, KD Leka

    • Continuum Brightness – RBush?, JSchou, NHurlburt, TBerger, PBoerner, JKuhn

  • Magnetic Data Products

    • Line of sight magnetic maps – THoeksema, EBenevolenskaya, TBai

    • Vector field maps – YLiu, THoeksema, EBenevolenskaya, ANorton, KD Leka, Blites, BBSO-JJing, VYurchyshyn

    • Coronal field extrapolations [AIA] – YLiu, KSchrijver, XPZhao, KHayashi, LM-MCheung

    • Coronal & Solar Wind – XPZhao, KHayashi, THoeksema, SAIC-Linker

    • Surface Plasma Flows – JBeck, YLiu, KHayashi, EBenevolenskaya, TBai, BWelsh, STWu, RShine, BDePontieu, TBerger, SAIC-Linker

  • Science Objectives

    • 1-1A – Tachocline - AKosovichev

    • 2-1C – Meridional Circulation - AKosovichev

    • 3-1B – Differential Rotation - AKosovichev

    • 4-1D – Near-surface Shear Layer - JBeck

    • 5-2A – Activity Complexes – EBenevolenskaya, TBai, THoeksema, KHayashi, NHurlburt, VGaizauskus, JHarvey

    • 6-2B – Active Regions – THoeksema, EBenevolenskaya, TBai, KHayashi, NHurlburt

    • 7-2C – Sunspots – TBai, THoeksema, EBenevolenskaya, NHurlburt

    • 8-2D – Irradiance Variations – RBush, TBerger, PBoerner

    • 9-3A – Magnetic Shear – YLiu, JBeck, KHayashi, AKosovichev, BBSO-VYurchyshyn

    • 10-3B – Flare/CME Magnetic Config – KHayashi, LM?, YLiu, XPZhao, TBai, AKosovichev, UC-B,BBSO-HWang

    • 11-3C – Flux Emergence – YLiu, JBeck, EBenevolenskaya, LHayashi, LM, BLites, KD Leka, BBSO-HWang

    • 12-3D – Mag. Carpet & Heating [AIA#1] – KHayashi, KSchrijver, JBeck, EBenevolenskaya

    • 13-4A – Coronal Energetics [AIA] – KSchrijver, YLiu, EBenevolenskaya, XPZhao, KHayashi, KD Leka, MCheung, UC-B,BBSO HWang

    • 14-4B – Large-scale B – Ph. + Cor. - KHayashi, THoeksema, EBenevolenskaya, XPZhao

    • 15-4C – Solar Wind – Evol. + Struct. - KHayashi, THoeksema, XPZhao, MWSO, CISM, LM-SFuselier, SAIC-ZMikic

    • 16-5A – Far-side Activity – PScherrer, CLindsey, DBraun, SAIC

    • 17-5B – Predicting AR Emergence - TBai

    • 18-5C – IMF Bs Events – XPZhao, YLiu, KHayashi, BBSO-VYurchyshyn, Hu, HINODE, LM-SFuselier, SAIC-ZMikic

    • 19 – Magnetic Topology – YLiu, MSU-DLongcope, Barnes, SAIC-Titov

    • 20 – Polar & Multi-scale Field – EBenevolenskaya, THoeksema


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